Boeing YB-40 Flying Fortress - Specifications (YB-40)

Specifications (YB-40)

General characteristics

  • Crew: 10
  • Length: 74 ft 9 in (22.6 m)
  • Wingspan: 103 ft 9 in (31.4 m)
  • Height: 19 ft 1 in (5.8 m)
  • Wing area: 1,527 ft² (141.9 m²)
  • Empty weight: 54,900 lb (24,900 kg)
  • Loaded weight: 63,500 lb (28,800 kg)
  • Max. takeoff weight: 74,000 lb (34,000 kg)
  • Powerplant: 4 × Wright R-1820-65 turbosupercharged radial engines, 1,200 hp (895 kW) each

Performance

  • Maximum speed: 292 mph (470 km/h)
  • Cruise speed: 196 mph (315 km/h)
  • Range: 2,260 mi (3,640 km)
  • Service ceiling: 29,200 ft (8,900 m)
  • Rate of climb: ft/min (m/s)
  • Wing loading: 47.2 lb/ft² (231 kg/m²)
  • Power/mass: 0.066 hp/lb (0.11 kW/kg)

Armament

  • Guns: 18 (or more) × .50 in (12.7 mm) Browning M2 machine guns. Typically used 14-16, with room for up to 30.
Location Rounds
Nose 2,200
Front top turret 2,500
Aft top turret 3,300
Ball turret 300
Waist guns 1,200
Tail guns ,
Total 10,700

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