Keystone B-3 - Specifications (B-3A)

Specifications (B-3A)

General characteristics

• Crew: 5
• Length: 48 ft 10 in (14.9 m)
• Wingspan: 74 ft 8 in (22.8 m)
• Height: 15 ft 9 in (4.8 m)
• Wing area: 1,145 ft² (106.4 m²)
• Empty weight: 7,705 lb (5,875 kg)
• Loaded weight: 12,952 lb (5,875 kg)
• Max. takeoff weight: lb (kg)
• Powerplant: 2 × Pratt & Whitney R-1690-3 radial engines, 525 hp (392 kW) each

Performance

• Maximum speed: 114 mph (98 kn, 183 km/h)
• Cruise speed: 98 mph (85 kn, 158 km/h)
• Range: 860 mi (760 nmi, 1,400 km)
• Service ceiling: 12,700 ft (3,870 m)
• Rate of climb: 530 ft/min (2.7 m/s)
• Wing loading: 11.31 lb/ft² (55.42 kg/m²)
• Power/mass: 0.0811 hp/lb (133 W/kg)

Armament

• Guns: 3 × .30 in (7.62 mm) machine guns
• Bombs: 2,500 lb (1,100 kg); 4,000 lb (1,800 kg) on short runs