  
       
                                          
                                          
                                          the BD-5 Actually Flies
                                           
                                          
                                           
                                          
       by Budd Davisson, courtesy of 
       www.airbum.com
                                            
                                          
      
                                          
                                          Okay all 
                                          you skeptics out there (and I was one 
                                          of the strongest), let it be known 
                                          here and not that, not only does the 
                                          BD-5 fly, but about 90 per cent of us 
                                          owe Jim Bede a gigantic apology. He 
                                          has managed to build a tiny little 
                                          wing stability platform that shows 
                                          more thought ingenuity and out and out 
                                          genius than anything general aviation 
                                          has seen for years.  
                                           
                                          It still has some bugs to iron out in 
                                          the engine department but, other wise, 
                                          the BD-5 , as we flew it, represents 
                                          the first quantum leap forward in 
                                          light aircraft design since WWII. As I 
                                          was hoisting my fanny up out of the 
                                          little cockpit after flying it, all I 
                                          could think of was, "Jim Bede, I'm 
                                          sorry for all those rotten things I 
                                          said about you and your airplane." 
                                          He's made a believer out of me.  
                                           
                                          You have to be a yak-herder in the 
                                          Himalaya boonies not to know the saga 
                                          of the BD-5 by heart. Every magazine 
                                          with a circulation of more than 15 has 
                                          run at least one story about the BD-5 
                                          and it's rotund, hyperactive 
                                          designer-builder-promoter, Jim Bede, 
                                          and therein may lie one of the 
                                          original seeds of the great Bede 
                                          controversy, as it now rages. Too much 
                                          was said too early in the game, 
                                          promises were made, performance 
                                          figures quoted and money taken. So, 
                                          when things didn't go like clockwork, 
                                          the BD buying public got a little bit 
                                          ticked off. (Witness the lynch mobs 
                                          lurking in dark corners at Oshkosh, 
                                          lying in wait for him.) 
                                           
                                          There is no doubt that many early Bede 
                                          claims were optimistic. No they were 
                                          more than optimistic, they were 
                                          outlandish (270 mph was promised t one 
                                          point). 
                                           
                                          I sat in the bleachers with the rest 
                                          of the aviation community and watched 
                                          the whole Bede experience develop. I 
                                          booed and hissed right along with the 
                                          others. I can clearly remember 
                                          receiving a three-view of the very 
                                          early Micro and my first impression 
                                          was that Jim Bede was absolutely and 
                                          irrevocably out of his tree. The 
                                          entire thing just wasn't possible. All 
                                          of us sidewalk engineers gawked at the 
                                          early V-tailed fibreglass prototype 
                                          and nodded knowingly. It was generally 
                                          agreed that, if it did fly, it would 
                                          have the inherent stability of a bongo 
                                          board and the handling characteristics 
                                          of a Whiffle ball.  
                                           
                                          After a while the old "it will never 
                                          fly" crowd changed their tune to "it 
                                          may fly but only a NASA test pilot can 
                                          handle it," You see, had to find 
                                          something else to gripe about because 
                                          that chainsaw with wings was flitting 
                                          around at far too many airshows for us 
                                          to maintain credibility in the face of 
                                          fact. It did fly and appeared to fly 
                                          well.  
                                           
                                          Naturally, there is only one way to 
                                          find out if "Joe average pilot" can 
                                          fly it and that is to snuggle down 
                                          into it and go aviating, so we asked, 
                                          "Can we fly your airplane?" The answer 
                                          was, "of course." First Bede had to 
                                          check a few things out. Next month 
                                          maybe. When it was next month, the 
                                          answer was in a few weeks, then it 
                                          went back up to months. This went on 
                                          for over two years. It looked like a 
                                          classic holding action against a press 
                                          that might leak the news that the BD-5 
                                          was nothing more than a cylindrical 
                                          coffin with retractable handles. 
                                           
                                          At Oshkosh the word came down: we 
                                          could come down to Newton and fly his 
                                          airplane at our convenience. At our 
                                          convenience, really? We didn't begin 
                                          getting excited until we called him 
                                          and he said, "Sure, how about 
                                          tomorrow?" 
                                          The second I stepped off the plane at 
                                          Wichita, I knew it was trouble. It was 
                                          blowing about 35 knots in the middle 
                                          of the night. They were probably 
                                          chaining the cattle to the ground. The 
                                          next morning Les Bervin, BD test 
                                          pilot, confirmed our suspicions and 
                                          allowed as how it wasn't the best day 
                                          to be flying the BD-5 for the first 
                                          time, but it was okay to fly the BD-5T 
                                          trainer. There two-ton Tinker-Toy 
                                          trainer is almost as ingenious as the 
                                          BD-5 itself. Using a systems of 
                                          springs and booms, they have hung a 
                                          clapped-out BD-5 (early victim of a 
                                          journey through a ditch) on the front 
                                          bumper of a Dodge pick-up truck. The 
                                          springs counterbalance the weight of 
                                          the boom almost exactly, so any lift 
                                          generated by those ridiculous little 
                                          wing panels will life it off the 
                                          ground and let you shoot 
                                          touch-and-goes and make gentle turns 
                                          to your heart's content. 
                                          Looking at the truck, the airframe and 
                                          the rail-straight windsock, I 
                                          suggested we draw straws. I lost. The 
                                          other two guys locked themselves in 
                                          the truck cab, leaving me to be the 
                                          first to find out what a Dodge-powered 
                                          BD-5 was like. Rich strapped me into 
                                          the trainer and explained rotations 
                                          speeds and offered a few helpful hints 
                                          as he was putting the headset down 
                                          over my twitching ears. 
                                           
                                          My first flight in the trainer was 
                                          sort of hop, jiggle, bounce, scrub. I 
                                          over-corrected, over-rotated and 
                                          over-wound just about everything. the 
                                          side stick initially seemed incredibly 
                                          sensitive, then, magically, about half 
                                          way down the runway things seemed to 
                                          smooth out. The second run had me 
                                          hopping off the ground like a frog on 
                                          a hot rock, but by concentrating on 
                                          the runway in front of me and 
                                          forgetting where my hand was resting, 
                                          I could even keep the wing down and 
                                          cancel out the crosswind, which by 
                                          this time was a solid 40 knots. The 
                                          third time around I rotated off almost 
                                          like a normal airplane. I was flying 
                                          big gentle S-turns all the way down 
                                          the runway while I called out my 
                                          height to Rich in the cab to see how 
                                          close I was. The fourth run was 
                                          unnecessary; I felt like I knew what I 
                                          was doing. The rest of the guys had 
                                          very nearly the same reaction. 
                                          
                                          
                                            
                                          
                                          What the BD-Dodge 
                                          combination showed me was, first of 
                                          all, takeoff happens very quickly and 
                                          it is easy to over-rotate. then it was 
                                          even easier to over-rotate the 
                                          rotation, which caused a little bit of 
                                          saw-toothed flight for a while. the 
                                          most important thing I learned was 
                                          that by focusing my eyes straight 
                                          ahead and flying it like one of those 
                                          fly-by-wire games in the bus depot, I 
                                          could eliminate most of my 
                                          over-controlling difficulties. It is 
                                          strictly a visual affair because there 
                                          is absolutely no fell or pressure in 
                                          the control stick. We each had a 
                                          chance to look through the flight 
                                          manual, but Les sat us all down and 
                                          went methodically down the list so 
                                          each of us knew what to do when. 
                                          Besides all the usual numbers, there 
                                          were a few things I found even more 
                                          important to remember. The first was, 
                                          if the engine quit, we couldn't 
                                          restart it. This particular bird had 
                                          the starter ring gear removed and they 
                                          had to fire it up with a pull-cord. 
                                          Also, the clutch and the drive system 
                                          is such that the prop freewheels when 
                                          the engine isn't running. Even though 
                                          the prop is turning, the engine isn't. 
                                          that didn't sound too bad, but then he 
                                          mentioned that if we touched zero G 
                                          for even a second, the float-type 
                                          carburettor they had temporarily 
                                          installed would choke the engine 
                                          deader than a mackerel. well, if 
                                          nothing else, I realized that kind of 
                                          information would make me tiptoe 
                                          around while doing aerobatics. 
                                           
                                          There aren't a whole lot of airplanes 
                                          around in which you can actually 
                                          retract the landing gear while sitting 
                                          on the ground for cockpit check, but 
                                          then, there aren't too many airplanes 
                                          six guys can pick up and put on 
                                          sawhorses either. That is where we sat 
                                          while familiarizing ourselves with the 
                                          cockpit. From the instant I 
                                          stiff-legged myself down into the 
                                          cavern underneath the panel I was 
                                          knocked out by the logic of the 
                                          cockpit. Everything is in the right 
                                          place, easy to use and figure out. The 
                                          fuel controls are ahead of the left 
                                          console and all the electrical stuff-mags, 
                                          master, etc.- on the right one. the 
                                          landing gear is a healthy looking 
                                          T-handle affair that would look more 
                                          at home in a jacked-up GTO. It juts up 
                                          between your legs about where the 
                                          control stick should be and the flap 
                                          handle is right next to it. The 
                                          control stick is shaped like a Baby 
                                          Ruth you had squeezed in your hand, 
                                          and sticks up out the right console. 
                                          Only the trim, which is right next to 
                                          the throttle, and the stick appear or 
                                          feel anything but perfectly placed. 
                                           
                                          Once up on the sawhorses, we amused 
                                          ourselves with the landing gear. It 
                                          takes a healthy tug to get it started 
                                          up, but more than the, you have to 
                                          keep it moving so the inertia of the 
                                          gear helps to get the handle over 
                                          center. If you don't keep your 
                                          shoulder behind it, it will stop 
                                          halfway and you'll never get it up. 
                                          When you pull and keep on pulling, you 
                                          are rewarded (or surprised) with a 
                                          healthy whack on the bottom of the 
                                          fuselage. There is absolutely no doubt 
                                          that the hear is up or down. When it 
                                          slams into position, the airplane 
                                          practically jumps off of the 
                                          sawhorses. It's like being inside of a 
                                          giant switchblade. Les had us do it 
                                          without moving the stick so we 
                                          wouldn't be jumping around in the air 
                                          when retracting the gear. it was good 
                                          practice, but it didn't work. 
                                          we figured the way to beat the wind 
                                          was to get up before it did, which 
                                          still didn't work. At 5:30 the next 
                                          morning, with my eyes clamped shut to 
                                          keep my precious bodily fluids from 
                                          leaking out, I staggered to the door 
                                          to see that it was still blowing up a 
                                          mini-storm outside. We thought we'd 
                                          had it, but Les stuck a finger into 
                                          the breeze and said, "Roll it out; 
                                          let's go flying." A few minutes later 
                                          I found myself fiddling with chokes, 
                                          mixtures and mags and hopping over 
                                          expansion joints in the taxiway as I 
                                          wended my way down to the runway. In 
                                          taxiing, the engine idled at nearly 
                                          3000 rpm; it sounded like a lawnmower 
                                          trying to run me down. I pressed the 
                                          transmit button on the top of the 
                                          throttle and said, "I'm ready to go." 
                                          My headphones answered, '"Good-bye." 
                                           
                                          Looking back at it, I'll have to admit 
                                          to not remembering much about that 
                                          take-off because it all happened so 
                                          quickly. The engine revved to about 
                                          5000 rpm immediately and the 52 hp 
                                          behind me started kicking me down the 
                                          runway at an astonishing rate. At 50 
                                          mph I started picking up the nosewheel, 
                                          which skipped a couple of times; as I 
                                          rocketed to 60-65 I was up and away. 
                                          The take-off was almost toy-like. I 
                                          bobbed around a bit, more from 
                                          surprise than from anything else. As 
                                          soon as I started watching what I was 
                                          doing and got out of ground turbulence 
                                          at 10 feet, it settled and felt almost 
                                          as solid as a Cessna 150 would have in 
                                          the same wind. At around 75-80 I 
                                          reached down for the landing gear, 
                                          completely forgetting the keep-on-pullin' 
                                          retraction technique. I gave it a 
                                          cursory jerk. As the handle came to a 
                                          halt in the midway position, I called 
                                          myself a few choice names and rammed 
                                          it forward to lock it down again. 
                                          While I was busy jamming the gear 
                                          handle, I forgot where my right hand 
                                          was and unconsciously tweaked the 
                                          stick. This caused the airplane to 
                                          jump around. When I gave the gear a 
                                          healthy pull it obediently leaped into 
                                          the wells. As the gear came up and I 
                                          let the flaps up slowly, the speed 
                                          wrapped up to 1-- mph pronto. 
                                           
                                          The best-rate-of-climb speed was 90 
                                          mph, but I was keeping it at around 
                                          100 for cooling. We climber 1200 feet 
                                          per minute with 52 hp blatting away 
                                          behind, the tack working its way up to 
                                          6500 rpm and the 182 camera plane 
                                          disappearing fast. 
                                          The most surprising thing about those 
                                          first few minutes of flight is that 
                                          everything seemed so normal. I didn't 
                                          even bother to look out at those 
                                          tooth-pick wings or marvel at the 
                                          incredible visibility. It just felt 
                                          that was the way airplanes should be 
                                          this was an airplane and it just flew 
                                          like one. I wanted it to feel strange 
                                          and exotic, but things fit together 
                                          too well. 
                                          Set your hand on the chair next to you 
                                          right now and make a list. Now wiggle 
                                          it left-to-right while keeping your 
                                          elbow stuck to the chair. If you don't 
                                          move the top of our fist more than 
                                          half an inch or so, you'll see what it 
                                          is like to fly a BD-5. there is no 
                                          noticeable resistance and practically 
                                          no movement of the stick. If you 
                                          twitch your hand an inch to the side, 
                                          you've just done a roll. Move it an 
                                          inch or so back and you loop. Now, 
                                          that sounds like it's sensitive, but 
                                          for some reason or another it doesn't 
                                          work out that way. It's got to be the 
                                          most natural way to shepherd an 
                                          airplane around I have ever seen. 
                                           
                                          Les had sworn that the stalls were 
                                          nothing to write books about and he 
                                          was right. In any configuration it 
                                          would shake, buffet, leap and groan as 
                                          you crept up to the stall, One wing 
                                          would unload as it would roll off in 
                                          one direction of the other. I'd keep 
                                          the stick completely back and porpoise 
                                          ahead, using aileron and rudder to 
                                          keep everything square with the world. 
                                          the instant-I mean the very 
                                          instant-the elevator was released, the 
                                          little beastie would be flying again. 
                                          Clean it was stalling at about 65, and 
                                          dirty at about 55. 
                                          I cursed the zero-G carburettor as I 
                                          sucked the nose up and tweaked my hand 
                                          left to watch the sky and ground swap 
                                          places. With just a little inverted 
                                          capability-just a couple of 
                                          seconds-you could drag the rolls out 
                                          into long, sensuous affairs over which 
                                          you'd have infinite control. I'll have 
                                          to wangle another flight when they put 
                                          the new carburettor on, I guess. you 
                                          can roll fast or your can roll slow, 
                                          four points or eight, left or right, 
                                          and barely move your hand. To the 
                                          right, rolls are just a little more 
                                          difficult, because your wrist works 
                                          more naturally inboard than it does 
                                          outboard. Full aileron deflection is 
                                          only about a 2-inch twist of your 
                                          wrist, but you almost never need it. 
                                          The roll rate is fast, about 150 
                                          degrees per second, which is just a 
                                          tad slower than a roundwing Pitts. I 
                                          can't begin to describe the total 
                                          precision of these controls. They 
                                          don't even come close to being 
                                          sensitive, but they put more control 
                                          in the palm of your hand than any 
                                          other airplane I know. 
                                           
                                          Now, almost nobody reading this is 
                                          going to believe my next statement, 
                                          yet it's absolutely true: the BD-5 is 
                                          one of the most stable little 
                                          airplanes flying. When I'd set it up 
                                          hands-off and then pulse the 
                                          stick-just bash it forward or back-the 
                                          nose would come up and then-bam-come 
                                          back to level and not move again. 
                                          There was almost no sign of 
                                          oscillations of any kind. The same if 
                                          true of yaw: punch and rudder, and the 
                                          nose snaps back as soon as you let go. 
                                          In roll it seems just a little more 
                                          neutral. The wings stay pretty much 
                                          where you put them. I tested all this 
                                          stability out by grooving around for a 
                                          while as I used both hands to adjust 
                                          my headset and boom mike, to eliminate 
                                          some communications problems (which 
                                          turned out to be my inability to read 
                                          "volume" one the radio face). 
                                          The BD-5's high thrust line means a 
                                          nose-down pitch with poser. (the nose 
                                          comes up when you back off the 
                                          throttle). Speed and power changes do 
                                          give a fair amount of trim change, but 
                                          I had been flying for a while before I 
                                          noticed that I had been unconsciously 
                                          moving the trim control with the thumb 
                                          of my throttle hand all along.  
                                           
                                          I knew Bede had done complete spin 
                                          tests, and Les had told us to go ahead 
                                          and spin it. But I'll admit that I put 
                                          spins off until I worked up my nerve. 
                                          Finally, I got the power back, got the 
                                          stick back, and kicked rudder as it 
                                          stalled. Instantaneously it snapped 
                                          over on its back and twisted downward 
                                          into a near-vertical spin. the first 
                                          turn was more of a snap roll, the 
                                          second turn was very oscillatory, with 
                                          the nose coming up fairly high. They 
                                          the nose dropped to about 60 degrees 
                                          and stabilized in a very fast spin. 
                                          Sixty degrees, by the way, looks like 
                                          you're going straight down. Les had 
                                          said that the airplane had a distinct 
                                          stick-free spin mode, here the reduced 
                                          drag of neutralize controls caused the 
                                          speed to increase and the spin to wrap 
                                          up very tight. That's why it needs a 
                                          classic NACA spin recovery: bash the 
                                          stick well forward and nail opposite 
                                          rudder hard. 
                                           
                                          Naturally, I managed to botch up the 
                                          recovery. I moved the stick forward 
                                          too slowly at the end of three turns, 
                                          and it immediately cracked around in 
                                          two more lightning-fast turns before I 
                                          got the stick far enough forward. I 
                                          recovered in less than half a turn, 
                                          going absolutely straight down. I 
                                          instinctively loaded a slight positive 
                                          G on it to keep that carburettor 
                                          happy, and, in so doing, got a slight 
                                          secondary spin in the other direction. 
                                          But that topped almost immediately. 
                                          the second time I spun it, I did what 
                                          Les had told me to do, and it popped 
                                          out instantly. It's a very 
                                          predictable-spinning airplane, but you 
                                          have to move like you mean business to 
                                          stop it where you want it. 
                                          On the way back into the pattern, I 
                                          made a couple of speed runs at 5,000 
                                          feet AGL. (9,000 feet density altitude 
                                          for that day). I was showing an even 
                                          155 mph cruise, and that works out to 
                                          177. Later, Peter did the same thing 
                                          down lower, at 1,000 feet, and got a 
                                          solid 175 mph indicated, which works 
                                          out to 188. 
                                           
                                          I knew I couldn't stay up all day and 
                                          avoid the landing. I flew a wide 
                                          360-degree overhead pattern, coming 
                                          downwind at 100 mph and base at 90. It 
                                          had taken me forever to get into the 
                                          pattern, because power off, at 85 mph, 
                                          I was only showing about 380 fpm 
                                          descent. I was beginning to wonder 
                                          about getting down before lunch. Les 
                                          had said the gear worked like 
                                          spoilers, and when I dropped it, I saw 
                                          what he meant. With gear and flaps 
                                          down I had to use just a tad of power 
                                          to fight the wind as I turned final 
                                          for the taxiway we were using the 
                                          land. (It was smoother than the 
                                          runway.) 
                                           
                                          The pitch stability came in handy for 
                                          holding 85 right on the money as I 
                                          jockeyed the power just a little to 
                                          stay on glide path. I kept reminding 
                                          myself what the view over the nose in 
                                          the trainer had looked like as I came 
                                          closer to the ground. the wind tried 
                                          to boggle me around but a tweak here 
                                          and a tweak there kept everything 
                                          perfectly lined up. As the pavement 
                                          started to get closer, I gently (very 
                                          gently) started to flare. The second I 
                                          moved the nose, the airplane stopped 
                                          coming down. So, I relaxed a bit and 
                                          started feeling for the ground. Lower. 
                                          Lower. Lower. Suddenly I knew I was 
                                          only a foot or so off and I started a 
                                          game with the wind. I tried to hold it 
                                          up as the wind stared to bat me 
                                          around. Plunk, and the mains were on. 
                                          I tried to hold the nose hear up, but 
                                          the flaps were too much for it and it 
                                          dropped onto the pavement anyway. We 
                                          were on the ground at around 60 mph. 
                                          The roll out was easy to control with 
                                          the rudder and I didn't need to use 
                                          the brake at all until I was ready to 
                                          turn into the parking area. 
                                           
                                          Well, I think we've discovered what 
                                          kind of pilot it takes to fly the 
                                          BD-5. Any proficient 150-hour pilot 
                                          could learn to handle it, but only if 
                                          he had already developed certain 
                                          skills and mental attitudes. He'd 
                                          better be an accurate pilot. He can't 
                                          make vague, unmetered control 
                                          movements or be only fuzzily aware of 
                                          what he sees over the nose. The 
                                          airplane is capable of absolute 
                                          precision, and to make consistently 
                                          smooth landings and takeoffs, the 
                                          pilot must use that precision. Most 
                                          pilots are sloppy; they'll have to 
                                          de-slop themselves before the fly the 
                                          Five. the guy who takes great pride in 
                                          making nothing but squeakers right on 
                                          the centreline won't have any trouble 
                                          at all. This type of mental attitude 
                                          is totally independent of flight time, 
                                          and can be present or absent 
                                          regardless of how fat the logbook may 
                                          be. 
                                          Flying the trainer would be the best 
                                          bet for transitioning into the Bede. 
                                          There you get the super-low ground 
                                          attitude, seating position, and 
                                          control response all in one package. 
                                          Otherwise a glider-especially 
                                          something like a Blanik or a 1-34-will 
                                          give you a perfect learning situation 
                                          for the supine seat and ground-hugging 
                                          landing attitude. an older Yankee 
                                          would give you the basic control 
                                          responses-the brake-only directional 
                                          control, and similar stall 
                                          characteristics., (the BD-5's are far 
                                          better.) 
                                           
                                          Asked how I feel about it, I can only 
                                          say that now I wish I hadn't let my 
                                          scepticism keep me from putting down 
                                          my $400 deposit for a production 
                                          model. Oh, well . . . Bede probably 
                                          has something else up his sleeve, and 
                                          you can bet I'll put my money where my 
                                          doubts are this time. 
                                          
      
                                          
                                           
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