  
                                                        Berkut 
                                                        
                                                        
                                                        Carbon Fibre Wolf Hunter 
                                                        
                                                        
       by Budd Davisson, courtesy of 
       www.airbum.com
                                                      
                                                      The descendants of the 
                                                      Mongols of central Asia 
                                                      must have an intense 
                                                      feeling of pleasure 
                                                      knowing they'd progressed 
                                                      to the point they could 
                                                      command the mighty golden 
                                                      eagle to do their wolf 
                                                      hunting for them. Their 
                                                      name for this ultimate 
                                                      bird of prey is Berkut. 
                                                       
                                                      'Wonder how they'd feel 
                                                      seeing their stately 
                                                      weapon swoop to the Earth 
                                                      backwards? Its tail 
                                                      feathers in front?  
                                                       
                                                      Those of us belonging to 
                                                      the tribe EAA wouldn't bat 
                                                      an eye at seeing a Berkut 
                                                      swoop down to the numbers 
                                                      with its traditional beak 
                                                      and tail pointing the 
                                                      wrong direction. That's 
                                                      how far we've progressed.
                                                       
                                                       
                                                      We now accept the unusual 
                                                      as the usual, courtesy of 
                                                      the sultan of weird, Burt 
                                                      Rutan. We have come so far 
                                                      since the original VariEze, 
                                                      4EZ, blew us away at 
                                                      Oshkosh '77 with its 
                                                      absolutely Buck Rogers, 
                                                      this-can't-really-be-happening 
                                                      appearance, that nothing 
                                                      surprises us any longer. 
                                                      That is why an aircraft 
                                                      such as Dave Ronnenberg's 
                                                      wonderfully modern 
                                                      rendition of the 
                                                      feathered, Mongol wolf 
                                                      hunter is accepted as 
                                                      being only logical. It is 
                                                      part of a progression, a 
                                                      natural evolvement of the 
                                                      unique breed of eagles 
                                                      that look as if they fly 
                                                      backwards and are only a 
                                                      few steps removed from an 
                                                      picnic cooler in 
                                                      structural complexity. 
                                                       
                                                      Ronnenberg and his 
                                                      company, Experimental 
                                                      Aviation (3025 Airport 
                                                      Ave., Santa Monica, CA 
                                                      90405, 310-391-8645 
                                                      Editor's note: this 
                                                      company no longer is in 
                                                      business), have taken 
                                                      the basic concept of the 
                                                      VariEze/LongEZ and carried 
                                                      it to the next level. A 
                                                      long-time builder of 
                                                      LongEZs (eight to his 
                                                      credit), Ronnenberg didn't 
                                                      start out to have a career 
                                                      building backwards flying 
                                                      machines. He had been a 
                                                      serious model builder 
                                                      when, in his mid-twenties 
                                                      the death of his brother 
                                                      set him on a new 
                                                      life-path. 
                                                      
      
                                                      "That 
                                                      was the turning point of 
                                                      my life," he remembers, "I 
                                                      needed something to help 
                                                      me keep my sanity, so I 
                                                      decided to design and 
                                                      build an airplane of my 
                                                      own." 
                                                       
                                                      At that time he hadn't 
                                                      even been in a light 
                                                      airplane, but he felt he 
                                                      had to build something 
                                                      that flew. 
                                                       
                                                      "I don't know why I 
                                                      thought I could do it, but 
                                                      I had no reason to believe 
                                                      that I couldn't do it 
                                                      either. As a child I had 
                                                      always felt if I had the 
                                                      right tools and the right 
                                                      materials I could build 
                                                      anything."  
                                                       
                                                      He describes that first 
                                                      airplane as a cross 
                                                      between a Mustang and a 
                                                      Spitfire built of thin 
                                                      plywood and foam. Four 
                                                      years later he found the 
                                                      airplane had had its 
                                                      desired effect.  
                                                       
                                                      "At that point I realized 
                                                      I had survived the 
                                                      emotional upheaval of my 
                                                      brother's death and at the 
                                                      same time realized I had a 
                                                      natural feeling for 
                                                      fibreglass and composites. 
                                                      I looked at that airplane 
                                                      and knew I had done my 
                                                      kindergarten work at one 
                                                      end of it and my college 
                                                      thesis at the other. 
                                                       
                                                      "It had been a combination 
                                                      education and 
                                                      psychological survival 
                                                      course. it had served its 
                                                      purpose, so I took a saw 
                                                      to most of it and the only 
                                                      time it flew was as the 
                                                      parts left my hand and 
                                                      spun a few times before 
                                                      they hit the dirt at the 
                                                      Los Angeles dump." 
                                                      
                                                      
                                                      
                                                      
                                                         
                                                      
                                                      
      
                                                      
                                                      The canopy lines and 
                                                      retract gear visually 
                                                      separate the Berkut from 
                                                      the EZ tribe 
                                                      
                                                      
                                                      
                                                      He had become familiar 
                                                      with the VariEze through 
                                                      building canards for 
                                                      others and then heard the 
                                                      plans for the LongEZ were 
                                                      about to come out.  
                                                       
                                                      "I drove up to Mojave and 
                                                      met Sally Melville for the 
                                                      first time. I asked her 
                                                      when the plans would be 
                                                      out and she looked at her 
                                                      watch and said, 'Oh, in 
                                                      about half an hour,' so I 
                                                      got in line and received 
                                                      the second set." 
                                                       
                                                      By 1983 he had built three 
                                                      LongEZs for others, hadn't 
                                                      yet completed his own and 
                                                      still hadn't even gotten a 
                                                      ride in one. That's when 
                                                      Dick Rutan and Jeanne 
                                                      Yeager talked him into 
                                                      coming to work on the 
                                                      Voyager project. While 
                                                      there, he finished his own 
                                                      LongEZ.  
                                                       
                                                      After leaving the Voyager 
                                                      project he returned to the 
                                                      LA basin where he 
                                                      continued custom building 
                                                      and became involved with 
                                                      California Microwave 
                                                      modifying LongEZs to use 
                                                      as RPVs. At the same time, 
                                                      he was doing subcontract 
                                                      work for such companies as 
                                                      Yamaha, showing them how 
                                                      to use fibreglass for 
                                                      conceptual work, designing 
                                                      prototypes, building 
                                                      prototypes and anything 
                                                      else that came along. He 
                                                      even became involved in a 
                                                      three-wheel vehicle 
                                                      prototype.  
                                                       
                                                      All the time he was doing 
                                                      this work he was working 
                                                      on a new airplane, a new 
                                                      evolutionary step away 
                                                      from the LongEZ.  
                                                       
                                                      "Every LongEZ I built was 
                                                      non-standard. They had 
                                                      different noses, different 
                                                      canopies, cowls, engines, 
                                                      exhaust systems, induction 
                                                      systems. I kept modifying 
                                                      and improving until by 
                                                      1985 I had quite a wish 
                                                      list of things I wanted to 
                                                      incorporate into a single 
                                                      airplane. Moulding the 
                                                      fuselage was high on that 
                                                      list along with 
                                                      retractable landing gear 
                                                      and a larger engine.  
                                                       
                                                      "Even though I didn't know 
                                                      what gear I wanted to use, 
                                                      I knew I wanted to stay 
                                                      away from mounting it on 
                                                      the outboard end of the 
                                                      main spar. I talked to 
                                                      Shirl Dickey about his 
                                                      retract gear and saw that 
                                                      by lengthening the 
                                                      fuselage to both balance 
                                                      the engine and give a 
                                                      larger cockpit, it also 
                                                      give me room to mount the 
                                                      gear in the belly. Today 
                                                      Dickey makes my gear legs. 
                                                       
                                                      "I wanted to move 
                                                      everything forward because 
                                                      of the LongEZ's ability to 
                                                      have an aft CG 
                                                      accidentally built into 
                                                      it. Also, I wanted at 
                                                      least 360 cubic engines 
                                                      behind the firewall 
                                                      because I knew the 
                                                      LongEZ's gross weight was 
                                                      primarily a factor of its 
                                                      ability to climb or 
                                                      perform at higher density 
                                                      altitudes. It all worked 
                                                      together to give more room 
                                                      and more power with a 
                                                      cleaner airframe." 
                                                      
       
      
                                                      
                                                      
                                                        
                                                      
                                                       
      
                                                      
                                                      
                                                      The carbon fibre gear legs 
                                                      tuck up into the wings
                                                      
                                                      
                                                      
                                                      
                                                      While redesigning the 
                                                      fuselage he worked on 
                                                      another of his wish list 
                                                      items; a completely 
                                                      moulded fuselage and wing 
                                                      strake package. To keep 
                                                      the weight down he has 
                                                      gone to carbon fibre in as 
                                                      many places as possible 
                                                      which he says also gives 
                                                      him parts that are totally 
                                                      stable once cured. He has 
                                                      taken advantage of the 
                                                      parts consistency by 
                                                      incorporating much of his 
                                                      jigging indices into the 
                                                      moulds so the parts 
                                                      themselves incorporate the 
                                                      important match points. 
                                                      It's a high tech variation 
                                                      on the Tab-A-into-Tab-B 
                                                      concept.  
                                                       
                                                      The fuselage skins, for 
                                                      instance have a waterline 
                                                      clearly moulded into them 
                                                      along with positioning 
                                                      points for the strake 
                                                      skins. This eliminates the 
                                                      alignment difficulties 
                                                      often associated with 
                                                      attaching wing strakes to 
                                                      the fuselage so they are 
                                                      matched and have the 
                                                      proper angle.  
                                                       
                                                      In as many places as 
                                                      possible, similar match 
                                                      points are tooled in. They 
                                                      are often moulded-in-place 
                                                      protrusions which provide 
                                                      self-alignment for another 
                                                      assembly. The landing gear 
                                                      assembly, for instance, is 
                                                      installed this way. Rich 
                                                      Riley, their 
                                                      writer/PR/Do-Everything 
                                                      guy has been quoted as 
                                                      saying they ought to carry 
                                                      the concept to the extreme 
                                                      and just print the plans 
                                                      on the parts.  
                                                       
                                                      The only parts of the 
                                                      airframe that still adhere 
                                                      to the original Rutan 
                                                      concept of mouldless 
                                                      construction in which 
                                                      hot-wired cores are then 
                                                      covered in glass are the 
                                                      wing panels, winglets and 
                                                      canard. But even in those 
                                                      parts Dave applies a 
                                                      different building 
                                                      technique.  
                                                       
                                                      After laboriously 
                                                      correcting the problems 
                                                      endemic in hot-wiring 
                                                      (wire drag, undercutting, 
                                                      chatter, etc) in the cores 
                                                      in his own projects, he 
                                                      searched for a way for the 
                                                      builder to produce 
                                                      cleaner, truer cores. If 
                                                      the core is perfect, the 
                                                      part will also be perfect 
                                                      and won't require extra 
                                                      weight in the form of 
                                                      fill.  
                                                       
                                                      The kit is supplied with 
                                                      hot-wired cores that are 
                                                      approximately 1/4" 
                                                      oversize. Aluminium 
                                                      airfoil templates are also 
                                                      supplied which are used as 
                                                      sanding guides. The 
                                                      builder makes a long, true 
                                                      sanding block covered in 
                                                      36 grit which he slides 
                                                      back and forth on the 
                                                      templates to rough the 
                                                      core to shape. Then finer 
                                                      sandpaper is used until 
                                                      the surface is smooth and 
                                                      straight. According to 
                                                      Ronnenberg, this system 
                                                      always yields a part that 
                                                      is die straight with a 
                                                      flawless surface. 
                                                       
                                                      Incidentally, the kit also 
                                                      includes plans for a 
                                                      vacuum pump to use in 
                                                      bagging the lay-ups that 
                                                      costs $20 to make 
                                                      utilizing an old 
                                                      refrigeration unit. One of 
                                                      their builders came up 
                                                      with it and calls it The 
                                                      Cheap Little Sucker.  
                                                       
                                                      The power package is a 
                                                      Lycoming IO-360-B1B 
                                                      utilizing one mag and an 
                                                      electronic ignition unit 
                                                      from Klaus Savier's Light 
                                                      Speed Engineering company. 
                                                      During mag checks it was 
                                                      interesting to note the 
                                                      normal 50-75 rpm drop on 
                                                      the mag while the 
                                                      electronic ignition didn't 
                                                      drop a single rev. It 
                                                      acted as if the mag hadn't 
                                                      even been switched off.
                                                       
                                                       
                                                      The prop on the prototype 
                                                      at the time we caught up 
                                                      with it at Copperstate was 
                                                      another Savier product. A 
                                                      black, evil looking, 
                                                      highly twisted thing, it 
                                                      was a maple/composite unit 
                                                      with specially shaped 
                                                      blades for their aerobatic 
                                                      demos but used the same 
                                                      dimensions as their normal 
                                                      cruise prop, 67" diameter 
                                                      and 91"(!) pitch.  
                                                       
                                                      Norm Howell, F-16 test 
                                                      pilot from Edwards and all 
                                                      around homebuilt freak, 
                                                      was doing the honours when 
                                                      I got a chance to fly the 
                                                      airplane.  
                                                       
                                                      I was especially glad for 
                                                      Howell's restraint in not 
                                                      laughing when I did the 
                                                      Berkut Boogie in 
                                                      scrambling aboard. The 
                                                      accepted boarding method 
                                                      is to place one hand on 
                                                      the canard and another on 
                                                      the canopy rail. Then with 
                                                      a minimum of grunting you 
                                                      leap and turn at the same 
                                                      time, pirouetting around 
                                                      to hook part of your rear 
                                                      on the canopy rail. 
                                                      Fearful of looking like a 
                                                      wimp, I over did it and 
                                                      nearly launched myself 
                                                      tail first into the 
                                                      cockpit.  
                                                       
                                                      Now comes the obligatory 
                                                      prototype statement: The 
                                                      kits make provision for a 
                                                      step. And a step of some 
                                                      sort is sorely needed, 
                                                      especially if the pilot is 
                                                      even less athletic than I 
                                                      am (hard to believe) or 
                                                      has a few female 
                                                      friends/spouse who want a 
                                                      more dignified way of 
                                                      boarding.  
                                                      
                                                      
                                                        
                                                      
                                                      
                                                      Prototypes being what they 
                                                      are...prototypes...they 
                                                      always have a bunch of 
                                                      things that "...will be 
                                                      taken care of in the 
                                                      kits..." In the dozens of 
                                                      demonstrators we've flown, 
                                                      not one has been 
                                                      as-kitted, so the Berkut 
                                                      is far from being alone in 
                                                      that respect.  
                                                       
                                                      A word about canard 
                                                      airplanes and especially 
                                                      those with a tandem 
                                                      configuration: Canards are 
                                                      different than other 
                                                      airplanes, both in the way 
                                                      they fit and in the way 
                                                      they fly. The differences 
                                                      aren't huge and are easily 
                                                      acclimated to by a pilot 
                                                      with some adaptability 
                                                      built into him. To a Spam 
                                                      can driver who has limited 
                                                      homebuilt experience, 
                                                      however, just sliding down 
                                                      into the airplane will 
                                                      make him or her feel as if 
                                                      they are boarding an F-16. 
                                                      Or the space shuttle. And 
                                                      that's not far from being 
                                                      the truth. The environment 
                                                      alone is enough to get the 
                                                      juices flowing, both the 
                                                      good ones and the bad, 
                                                      which makes flying the 
                                                      airplane that much more of 
                                                      a challenge.  
                                                       
                                                      In the case of an airplane 
                                                      like the Berkut, almost 
                                                      every aspect of it has to 
                                                      be looked at from two 
                                                      points of view: The first 
                                                      is how it would be viewed 
                                                      by someone with experience 
                                                      in canard aircraft. The 
                                                      second is how it would be 
                                                      looked at by the average 
                                                      pilot/builder (300-500 
                                                      hours total time, 35-50 
                                                      hrs per year) with no tiny 
                                                      airplane or canard 
                                                      experience.  
                                                       
                                                      For instance, sliding down 
                                                      into the cockpit requires 
                                                      threading both legs 
                                                      through cut-outs in the 
                                                      bottom edge of the panel 
                                                      and slinking down into a 
                                                      semi-supine seating 
                                                      position. To a LongEZ 
                                                      driver the fit will feel 
                                                      almost luxurious in both 
                                                      elbow room and general 
                                                      accommodations. Everything 
                                                      fits the way a 
                                                      high-performance pilot 
                                                      sees it in his dreams. A 
                                                      C-172 pilot, on the other 
                                                      hand, is going to feel as 
                                                      if he is being loaded into 
                                                      an artillary shell. Even 
                                                      though it's not even 
                                                      remotely tight (how much 
                                                      moving around do you 
                                                      actually do on a cross 
                                                      country?), it will be 
                                                      perceived that way by a 
                                                      big airplane pilot. To him 
                                                      or her, the smallish 
                                                      instrument panel is going 
                                                      to feel like a lap top 
                                                      computer is strapped 
                                                      across his legs. Once the 
                                                      pilot is accustomed to the 
                                                      environment, his biggest 
                                                      problem will be in staying 
                                                      awake, it is so 
                                                      comfortable.  
                                                       
                                                      As it happens, the rudder 
                                                      pedals were too far away 
                                                      for my what are apparently 
                                                      stubbier than average legs 
                                                      and we had to put a thick 
                                                      pack behind me. That, 
                                                      unfortunately, moved me so 
                                                      far forward it screwed up 
                                                      the ergonomics of the 
                                                      stick placement and the 
                                                      canopy curvature. It was 
                                                      nothing major, but 
                                                      noticeable.  
                                                       
                                                      Here it is again: 
                                                      Kit-build aircraft have 
                                                      the option of adjustable 
                                                      rudder pedals.  
                                                       
                                                      Norm went through the 
                                                      litany of avionics, 
                                                      switches etc. and it was 
                                                      time to crank. The 
                                                      Lycoming lit off and I 
                                                      felt it, rather than heard 
                                                      it start barking. The 
                                                      airframe is so stiff there 
                                                      was no doubt when the 
                                                      air/fuel mixture was right 
                                                      for firing.  
                                                       
                                                      The brakes at first give 
                                                      the impression of being 
                                                      mushy, but we hadn't moved 
                                                      20 feet when I began to 
                                                      like the way they were 
                                                      modulated. Some 
                                                      steer-by-brake systems are 
                                                      touchy, others not 
                                                      positive enough. This one 
                                                      had a nice soft feel that 
                                                      developed pressure just 
                                                      before actually getting 
                                                      braking so it was easy to 
                                                      steer.  
                                                       
                                                      A problem I always have 
                                                      with canards is keeping my 
                                                      feet off the pedals when 
                                                      they aren't needed. Since 
                                                      the rudders are 
                                                      independent, my usual 
                                                      technique of keeping 
                                                      pressure on both pedals 
                                                      always backfires because 
                                                      it deploys both rudders at 
                                                      the same time. Not 
                                                      critical but certainly 
                                                      strange looking to an 
                                                      observer. 
                                                       
                                                      
                                                      
                                                        
                                                      
                                                      
                                                      The Berkut canopies 
                                                      probably add a lot of 
                                                      complexity and cost to the 
                                                      kit, but from my 
                                                      perspective they are worth 
                                                      every penny. The ability 
                                                      to taxi with one or both 
                                                      canopies open, ala F-4 
                                                      Phantom, is worth its 
                                                      weight in AN hardware (or 
                                                      gold, which ever is 
                                                      higher). The usual canopy 
                                                      on a canard can't be 
                                                      opened during taxi 
                                                      although you can crack 
                                                      them to the safety notch 
                                                      on the latch. Taxiing the 
                                                      Berkut like a convertible 
                                                      was nice. Then, just reach 
                                                      up and pull, remembering 
                                                      to get the hands out of 
                                                      the way when it starts 
                                                      down. 
                                                       
                                                      Once the canopy was down, 
                                                      I found my forward seating 
                                                      position put the forward 
                                                      canopy combing in a 
                                                      position that blocked part 
                                                      of the top row of 
                                                      instruments including the 
                                                      airspeed. Again, 
                                                      adjustable pedals will 
                                                      solve that. 
                                                       
                                                      As we lined up on the 
                                                      centerline of the big 
                                                      Williams-Gateway 12R, I 
                                                      was conscious of a lot of 
                                                      pressure on the side stick 
                                                      from the elevator trim 
                                                      springs. Norm had said it 
                                                      was trimmed okay for 
                                                      takeoff, but there was no 
                                                      trim indicator so that was 
                                                      an educated guess.  
                                                       
                                                      The plan was to accelerate 
                                                      to 90 mph, smoothly rotate 
                                                      and climb out. With that 
                                                      in mind, I eased the power 
                                                      in, remembering I might 
                                                      need some brake to steer. 
                                                      It took only one tiny poke 
                                                      with the brakes before the 
                                                      rudders took over. Then it 
                                                      was just a matter of 
                                                      waiting a few seconds 
                                                      until the needle started 
                                                      towards 90 mph. I gently 
                                                      increased back pressure on 
                                                      the stick and found I was 
                                                      still fighting a lot of 
                                                      trim pressure. Norm had 
                                                      said the elevator would 
                                                      blow up to neutral and 
                                                      lighten the trim load. 
                                                      Apparently it needed the 
                                                      trim rolled further back 
                                                      because it took a lot of 
                                                      muscle to get the nose up.
                                                       
                                                       
                                                      When the nose cleared the 
                                                      runway, the airplane 
                                                      started off the ground and 
                                                      I went to check the nose 
                                                      and hold that exact 
                                                      attitude. When I did, the 
                                                      nose dropped far more than 
                                                      I wanted with the help of 
                                                      the trim springs and I 
                                                      skipped off the runway. 
                                                      Embarrassing! That was 
                                                      okay, though, because I'd 
                                                      embarrass myself much more 
                                                      later in the flight.  
                                                       
                                                      A quick fix for the trim 
                                                      problem would be a trim 
                                                      indicator, which could be 
                                                      nothing more than a paint 
                                                      stripe on the inboard end 
                                                      of a canard tip where the 
                                                      elevator mates. 
                                                       
                                                      Once off the ground I 
                                                      found holding the pitch 
                                                      attitude required some 
                                                      careful isometrics of me 
                                                      against the springs until 
                                                      I had enough sense to 
                                                      reach up with a thumb and 
                                                      toggle the lollipop trim 
                                                      switch on top the stick 
                                                      back a couple times. Then 
                                                      life became much more 
                                                      livable.  
                                                       
                                                      The airplane was moving 
                                                      around a little because I 
                                                      hadn't yet learned to 
                                                      appreciate how rapidly the 
                                                      airplane responded to any 
                                                      kind of aileron pressure. 
                                                      Any kind! 
                                                       
                                                      Retracting the gear was 
                                                      strictly a matter of 
                                                      throwing the small switch 
                                                      between my legs up. If the 
                                                      lights hadn't winked I 
                                                      would have never known 
                                                      anything had gone on, 
                                                      since the airplane didn't 
                                                      do anything unusual.
                                                       
                                                      
                                                      
                                                        
                                                          
                                                            
                                                          
      
                                                          
                                                          Norm Howell 
                                                                pilots the 
                                                                Berkut past the 
                                                                Superstition 
                                                                Mountains east 
                                                                of Phoenix. The Berkut may owe 
                                                                some of it's 
                                                                lines and 
                                                                concept to the 
                                                                Rutan EZ lines, 
                                                                but the design 
                                                                is entirely new.
                                                           
                                                         
                                                       
                                                      
      
                                                      
                                                      
                                                      Norm's patient, reassuring 
                                                      voice in the Bose 
                                                      noise-cancelling headsets 
                                                      (which really worked and 
                                                      are a necessity) told me 
                                                      anything over 100 mph was 
                                                      good for climb. I was 
                                                      doing a solid 110 before I 
                                                      pulled up into the climb 
                                                      and we started upstairs 
                                                      like a bullet. The 
                                                      literature says 2,000 fpm 
                                                      which looks about right, 
                                                      but the airplane felt much 
                                                      better the faster it went. 
                                                      The difference in actual 
                                                      climb rate between 110 mph 
                                                      and 140 mph wasn't enough 
                                                      to really notice, but the 
                                                      airplane seemed much 
                                                      happier and was much more 
                                                      stable at those speeds.
                                                       
                                                       
                                                      It is important you 
                                                      picture what flying 
                                                      something like the Berkut 
                                                      looks and feels like from 
                                                      inside the Raybans. For 
                                                      one thing, compared to 
                                                      most airplanes, you're 
                                                      practically laying on your 
                                                      back, which is, of course, 
                                                      an illusion. It's supine, 
                                                      but not very. The 
                                                      instrument panel is just 
                                                      above your knees gently 
                                                      caressing your Levi's and 
                                                      your legs are straight out 
                                                      in front of you. All 
                                                      rudder work is strictly 
                                                      from the ankles down. The 
                                                      legs never move. Glass 
                                                      wraps from just above your 
                                                      elbows, over your head and 
                                                      sweeps down to the top of 
                                                      the panel, giving the 
                                                      feeling the airplane stops 
                                                      just in front of the 
                                                      panel, since practically 
                                                      none of it can be seen. 
                                                      Although the canard is out 
                                                      there, it never occurs to 
                                                      you to look at it. It is 
                                                      mentally invisible.  
                                                       
                                                      The tiny throttle sticks 
                                                      up under your outstretched 
                                                      left arm and your right 
                                                      arm is slightly, only 
                                                      slightly, bent so your 
                                                      hand can wrap around the 
                                                      side stick. The trim 
                                                      switch is on top the 
                                                      stick, but a small square 
                                                      box on the side of it has 
                                                      a bunch of push buttons 
                                                      that flip-flop the comm 
                                                      and nav and let you talk 
                                                      to the outside world.  
                                                       
                                                      The movements required to 
                                                      control the airplane 
                                                      aren't movements at all. 
                                                      Especially in roll. The 
                                                      old saying about the 
                                                      airplane reading your mind 
                                                      absolutely applies here. 
                                                      In normal manoeuvring, the 
                                                      stick doesn't move at all. 
                                                      Just the gentlest of 
                                                      pressures is all that's 
                                                      required to whip one wing 
                                                      down. The pressures 
                                                      required are so slight, 
                                                      sometimes its hard to tell 
                                                      whether you actually 
                                                      touched the stick or not.
                                                       
                                                       
                                                      The ailerons have 
                                                      absolutely no break-out 
                                                      forces. Nothing. None. 
                                                      Nada. They offer no 
                                                      resistance so centring the 
                                                      stick is strictly a visual 
                                                      affair because there is no 
                                                      small notch between 
                                                      pressure build-ups letting 
                                                      you know you've found 
                                                      centre.  
                                                       
                                                      Furthering the feeling of 
                                                      mind-over-matter aviating 
                                                      is the tremendous roll 
                                                      response/acceleration 
                                                      right around neutral. Just 
                                                      the slightest pressure 
                                                      results in 5-10 degrees of 
                                                      bank instantly.  
                                                       
                                                      But, the illusion of 
                                                      whipping around the 
                                                      longitudinal axis is just 
                                                      that...an illusion. The 
                                                      actual roll rate isn't all 
                                                      that high and the aileron 
                                                      pressures required to get 
                                                      max rate are also far from 
                                                      being light, especially 
                                                      when measured against the 
                                                      response and pressures 
                                                      right around neutral. The 
                                                      pressures aren't linear.
                                                       
                                                       
                                                      This is just an analysis 
                                                      of the aileron feel, not a 
                                                      criticism. However, things 
                                                      happen very quickly right 
                                                      at neutral and it is no 
                                                      place for a ham handed 
                                                      pilot. The feel isn't that 
                                                      much different than a lot 
                                                      of canards, but the 
                                                      response is much higher, 
                                                      which is a welcome change.
                                                       
                                                       
                                                      The airplane also has yaw 
                                                      characteristics that are 
                                                      probably typical of highly 
                                                      swept wings. They give a 
                                                      huge amount of dihedral 
                                                      effect with yaw, so there 
                                                      is a definite coupling of 
                                                      roll with yaw. Swing the 
                                                      nose side ways with rudder 
                                                      and you get some definite 
                                                      roll with it.  
                                                       
                                                      The adverse yaw is also 
                                                      interesting. At cruise 
                                                      speeds adverse yaw is 
                                                      close to being 
                                                      non-existent. In fact, 
                                                      because of the roll-yaw 
                                                      couple, you're better off 
                                                      keeping your feet on the 
                                                      floor. Something I never 
                                                      did do very well.  
                                                       
                                                      At slow speeds, the 
                                                      airplane has a bunch of 
                                                      adverse yaw. Actually, at 
                                                      slow speeds it has what 
                                                      might be considered to be 
                                                      "normal" coordination 
                                                      requirements while at 
                                                      cruise speed it acts more 
                                                      like a jet. 
                                                       
                                                      Once trimmed out in level 
                                                      flight, the airplane just 
                                                      sits there requiring 
                                                      little or no input from 
                                                      the pilot. If upset by 
                                                      turbulence, however, the 
                                                      airplane takes a while to 
                                                      recover on its own. A few 
                                                      pitch stability tests 
                                                      showed the airplane to be 
                                                      statically positive, but 
                                                      not strongly so. Pulled 15 
                                                      knots off cruise and 
                                                      released, it gently 
                                                      started back down and then 
                                                      surprised me by not over 
                                                      shooting the original 
                                                      speed by more than about 8 
                                                      knots. It damped out 
                                                      completely with no long 
                                                      terms in two very 
                                                      leisurely cycles.  
                                                       
                                                      In setting up for cruise 
                                                      the aerobatic prop made 
                                                      itself known, however, the 
                                                      extreme effort for fuel 
                                                      efficiency also showed. At 
                                                      2600 rpm, the electronic 
                                                      monitoring panel showed 
                                                      only 19.5 inches of 
                                                      manifold pressure! We were 
                                                      truing a shade under 180 
                                                      knots (207 mph). 
                                                      Apparently Dave and his 
                                                      guys wind it up a lot 
                                                      faster, around 2800 rpm in 
                                                      cruise, but that seemed 
                                                      awfully fast to those of 
                                                      us used to normal looking 
                                                      numbers. With their 
                                                      earlier engine, which was 
                                                      slightly hot rodded, their 
                                                      speed tests showed 75% 
                                                      cruise to be about 208 
                                                      knots true at 8,000 feet 
                                                      (1228 mile range, 10.3 
                                                      gph) and the economy 
                                                      cruise was 187 knots (1514 
                                                      mile range with 30 minute 
                                                      reserve, 7.7 gph). Race 
                                                      speeds which were 
                                                      officially recorded at 
                                                      various canard bashes ran 
                                                      between 240 mph and 248 
                                                      mph. It would take a fast 
                                                      wolf to escape this 
                                                      Berkut. 
                                                       
                                                      The extreme stiffness of 
                                                      the airframe was very 
                                                      noticeable when cutting 
                                                      through turbulence. Since 
                                                      we were whistling along at 
                                                      over 200 mph and nothing 
                                                      in the airframe was 
                                                      flexing to absorb energy, 
                                                      even moderate chop 
                                                      hammered at us with sharp 
                                                      edges. 
                                                       
                                                      'Wondering about how I 
                                                      embarrassed myself the 
                                                      second time? The belly 
                                                      board speed brake is a 
                                                      T-shaped handle on the 
                                                      left side of the throttle. 
                                                      The mixture is a much 
                                                      smaller, but still vaguely 
                                                      T-shaped handle on the 
                                                      right side. Guess which 
                                                      one I pulled during slow 
                                                      speed tests for gear and 
                                                      speed brake effects? Like 
                                                      I said, embarrassing.  
                                                       
                                                      The gear speed is 150 mph, 
                                                      so it can be used to slow 
                                                      you down, but it really 
                                                      doesn't add that much drag 
                                                      and there is very little 
                                                      pitch change. It doesn't 
                                                      require retrimming at all. 
                                                      The belly board does pitch 
                                                      the nose down and does a 
                                                      lot for increasing speed 
                                                      stability when slow. If 
                                                      the power is up when the 
                                                      board is down there's a 
                                                      lot of buffeting from the 
                                                      prop working in dirty air 
                                                      but that all disappears 
                                                      when the throttle comes 
                                                      back. 
                                                       
                                                      The airplane takes some 
                                                      planning in approach just 
                                                      to get rid of the speed. 
                                                      Then it needs careful 
                                                      attention to keep the 
                                                      speed down. Norm wanted 
                                                      100 on down wind and 90 
                                                      down close to ground 
                                                      effect to leave enough 
                                                      canard authority in the 
                                                      bank to flair comfortably. 
                                                      Keeping it at 100 mph was 
                                                      a chore in the beginning, 
                                                      since just the tiniest 
                                                      nose pitch change gave an 
                                                      extra 10 mph. Once it got 
                                                      down to 90, it was much 
                                                      easier to control and was 
                                                      close to being speed 
                                                      stable at 85. In this 
                                                      respect, it was very 
                                                      canard-like. 
                                                       
                                                      The visibility over the 
                                                      nose is awesome on short 
                                                      approach. Also, once the 
                                                      airplane is slow with the 
                                                      speed brake out, it 
                                                      actually comes down at a 
                                                      much steeper angle than 
                                                      you'd expect for such a 
                                                      clean bird. Many canards 
                                                      need very flat approach 
                                                      angles. When the glide is 
                                                      broken it takes some 
                                                      concentration to keep from 
                                                      over rotating because the 
                                                      nose is so low it is 
                                                      almost out of sight. In 
                                                      fact, an attitude that 
                                                      looks to be nearly level 
                                                      is actually a good landing 
                                                      attitude. 
                                                       
                                                      Norm was intoning height 
                                                      above the runway as I 
                                                      willed the airplane down 
                                                      the last 5 feet. It was an 
                                                      interesting balancing act 
                                                      between me, the trim 
                                                      springs and an airplane 
                                                      that I knew would dart at 
                                                      the runway if I released 
                                                      any back pressure but 
                                                      would be all too happy to 
                                                      balloon if I increased 
                                                      angle of attack a fraction 
                                                      of a degree. I just kept 
                                                      working at it until the 
                                                      mains thumped on. The nose 
                                                      stayed in the air until I 
                                                      tried to gently lower it, 
                                                      at which time, it decided 
                                                      it had had enough and 
                                                      dropped to the ground as 
                                                      if relieved the flight was 
                                                      over.  
                                                       
                                                      Solid braking stopped us 
                                                      at the intersection and it 
                                                      showed no urge at all to 
                                                      do anything but roll 
                                                      straight ahead.  
                                                       
                                                      About that time I took my 
                                                      first breath since 
                                                      downwind.  
                                                       
                                                      Certainly one of the most 
                                                      asked questions about the 
                                                      Berkut is Ronnenberg's 
                                                      relationship with Burt 
                                                      Rutan.  
                                                       
                                                      Dave's response is, "When 
                                                      designing this airplane, 
                                                      there were several things 
                                                      I wanted to address and 
                                                      number one was I didn't 
                                                      want to anger Burt Rutan. 
                                                      He's a friend and we have 
                                                      conversations but we don't 
                                                      talk engineering, I don't 
                                                      ask for advise or help. 
                                                      He's keeping an arm's 
                                                      length relationship with 
                                                      me which I think is 
                                                      necessary.  
                                                       
                                                      "The airplane exists 
                                                      because of Burt, but only 
                                                      because he designed the 
                                                      airplane from which it 
                                                      evolved. But it evolved 
                                                      without his assistance. He 
                                                      was completely and totally 
                                                      separate. He had nothing 
                                                      to do with the program 
                                                      whatsoever and I think 
                                                      he'd like people to know 
                                                      that.  
                                                       
                                                      We didn't discuss the 
                                                      subject with Burt, but 
                                                      maybe we didn't have to. 
                                                      For one thing, the 
                                                      semi-finished Berkut in 
                                                      the Experimental Aviation 
                                                      booth at Oshkosh had the 
                                                      owner's name on it...Dick 
                                                      Rutan. Also, Ronnenberg 
                                                      recounted an incident at a 
                                                      past Rutan forum where 
                                                      Burt was saying he would 
                                                      never be involved in the 
                                                      sale of kits and plans 
                                                      again, but said something 
                                                      to the effect of, "...but 
                                                      if you'd like to see 
                                                      something I like, go see 
                                                      the Berkut..." 
                                                       
                                                      At this point in time 
                                                      there are nearly 50 kits 
                                                      in the field and Dave 
                                                      Ronnenburg expects at 
                                                      least three at Oshkosh 95. 
                                                      In the meantime, keep your 
                                                      wolves under cover. The 
                                                      Berkuts are coming.   
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