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      Boeing 247 
      
       
        
         
           
         The Boeing Model 247 was a good airplane but, its capacity proved too 
         small and its passengers found it awkward to step over the main spar in 
         the  aisle.  
         
        
       
      The 
      year 1933 was extremely important in the history of air transport for it 
      was then that the two original ancestors of the modern airliner appeared. 
      One was the Douglas DC-1, which first flew in July, and the other was the 
      Boeing Model 247, which first flew as a prototype on February 8,1933.  
       
      Although later developments of the Douglas aircraft were to become the 
      most widely used of the early modern airliners, it was the Boeing 247 that 
      pioneered the whole new generation of transports. It was a good airplane, 
      and bought by United Airlines and other U.S. carriers, but its capacity 
      proved too small and its passengers found it awkward to step over the main 
      spar in the aisle. Around seventy-five Model 247s were built for customers 
      in the US and abroad, including Lufthansa of Germany a creditable total 
      for any aircraft of the thirties.  
      
      Early route flying after 
      the First World War convinced airline operators that multi-engined 
      aircraft were preferable for flying long distances and across water, in 
      terms of both economy and safety. However, while huge lumbering biplanes 
      were still the vogue, the Boeing company designed the Model 247 as a new 
      ten-passenger aircraft of revolutionary concept. The all-metal airframe 
      was well streamlined, with low monoplane wings, a smooth oval 
      semi-monocoque fuselage, neatly cowled twin engines, and an enclosed 
      cockpit for the pilots. The undercarriage was retractable, giving the 
      aircraft a maximum speed of over 290 km/h (180 mph). This was far higher 
      than the speed of contemporary biplane airliners, rivalling the 
      performance of military fighters of the day.  
      
        
      The 247 was an immediate 
      success and the first production aircraft were quickly followed by the 
      refined Model 247D. But destiny still held further success for the 
      airliner. Many great aircraft built between the wars were evolved to take 
      part in air races; such contests were also excellent proving grounds for 
      new or established production types. So, when the MacRobertson Race from 
      England to Australia was organized in 1934, a Boeing Model 247D was 
      entered. Flown by Col. Roscoe Turner and Clyde Pangbourne, it gained 
      second place in the transport section, behind its great rival the DC-2.
       
      
      
       
        
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         Specifications: 
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         Boeing Model 247
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         Dimensions: 
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         Wing span: 
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         74 ft (22.6 m) 
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         Length:  | 
         
         51 ft 7 in (15.7 m)
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         Height:  | 
         
         12 ft 6 in (3.8 m)
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         Wing Area: 
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         836.44 sq ft (77.70 sq 
         m)  | 
         
        
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         Weights:  | 
         
        
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         Empty:  | 
         
         8,940 lb (4,055 kg)
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         Gross T/O: 
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         13,650 lb (6,192 kg)
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         Performance: 
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         Maximum Speed: 
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         200 mph (322 km/h)
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         Service Ceiling:
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         25,400 ft (7,740 m)
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         Rate of Climb: 
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         1,150 ft (350m)/min
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         Normal Range: 
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         800 miles (1,297 km)
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         Powerplant: 
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         Two Pratt & Whitney 
         Wasp S1H1-G, 550 hp, 9-cylinder radial engines.  | 
         
        
       
      
      
        
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