Keystone B-5

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The Keystone B-5 was a light bomber made for the United States Army Air Corps in the early thirties. It was originally designated LB-14, but the LB- "light bomber" designation was dropped in 1930. In 1930, twenty-seven B-3As were convereted to the B-5A design. They provided the backbone of the U.S. bomber force from then to 1934.

[edit] Specifications (B-5A)

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 (3,945 kg)
• Loaded weight: 12,952 lb (5,875 kg)
• Max takeoff weight: lb (kg)
• Powerplant: 2× Wright R-1750-3 radial engines, 525 hp (392 kW) each

Performance

• Maximum speed: 111 mph (97 kt, 179 km/h)
• Cruise speed: 98 mph (86 kt, 160 km/h)
• Range: 815 mi (707 nm, 1,310 km)
• Service ceiling: 14,000 ft (4,270 m)
• Wing loading: 273.3 lb/f² (52.22 kg/m²)
• Power/mass: 0.0810 hp/lb (133 W/kg)

Armament

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

[edit] External links

• USAF Museum article on B-5
• USAF Museum article on LB-14

[edit] Related content

Related development

• Keystone B-3
• Keystone B-4
• Keystone B-6

 

Designation sequence

• LB-series: LB-11 - XLB-12 - LB-13 - LB-14
• B-series: B-2 - B-3 - B-4 - B-5 - B-6 - Y1B-7 - XB-8

Related lists

• List of bomber aircraft
• List of military aircraft of the United States