Boeing XB-39 Superfortress - Specifications (XB-39)

Specifications (XB-39)

General characteristics

• Crew: 10:
• Length: 99 ft 0 in (30.18 m)
• Wingspan: 141 ft 3 in (43.05 m)
• Height: 27 ft 9 in (8.46 m)
• Wing area: 1736 ft² (161.3 m²)
• Empty weight: 74,500 lb (33,800 kg)
• Loaded weight: 120,000 lb (54,000 kg)
• Max. takeoff weight: 133,500 lb (60,560 kg)
• Powerplant: 4 × Allison V-3420-11 liquid-cooled X24 (double-vee) engines, 2,100 hp (1,600 kW) each

Performance

• Maximum speed: 405 mph (351 knots, 648 km/h)
• Range: 6,290 mi (5,460 nm, 10,060 km)
• Service ceiling: 35,000 ft (11,000 m)
• Wing loading: 69.12 lb/ft² (337.5 kg/m²)
• Power/mass: 0.073 hp/lb (121 W/kg)

Armament

• Guns:
  
  • 8× .50 in (12.7 mm) Browning M2 machine guns in remote controlled turrets
  • 2× .50 in (12.7 mm) machine guns in manual turrets
  • 1× 20 mm (0.787 in) M2 cannon in tail
• Bombs: 20,000 lb (9,000 kg)