Keystone B-6
From Free net encyclopedia
In 1931, the United States Army Air Corps received five working models (Y1B-6s) of the B-6 bomber. (The Y1B- designation, as opposed to a YB- designation, indicates funding outside normal fiscal year procurement). Two of these were diverted from an order of LB-13s; three were modified B-3As. The performance of the Y1B-6s was very similar to that of the Keystone B-4s, due to an engine of equivalent power.
The production model, called the B-6A, was the last biplane bomber purchased by the Army. The performance of the B-6A varied little from the Martin NBS-1 ordered in 1921. Its successor, the monoplane bomber, had a hard time getting accepted. The Douglas Y1B-7 and Fokker XB-8 were originally designed as high-speed reconnaissance planes.
Specifications (B-6A)
{{airtemp
|plane or copter?=plane |jet or prop?=prop
|crew=5
|length main=48 ft 10 in
|length alt=14.9 m
|span main=74 ft 8 in
|span alt=22.8 m
|height main=15 ft 9 in
|height alt=4.8 m
|area main=1,145 ft²
|area alt=106.4 m²
|empty weight main=8,057 lb
|empty weight alt=3,665 kg
|loaded weight main=13,350 lb
|loaded weight alt=6,056 kg
|max takeoff weight main= lb
|max takeoff weight alt= kg
|number of props=2 |engine (prop)=Wright R-1820-1 |type of prop=radial engines |power main=575 hp |power alt=429 kW
|max speed main=120 mph |max speed alt=100 kt, 190 km/h |cruise speed main=103 mph |cruise speed alt=89 kt, 166 km/h |range main=825 mi |range alt=717 kt, 1,330 km |ceiling main=14,100 ft |ceiling alt=6,400 m |loading main=11.66 lb/ft² |loading alt=56.92 kg/m² |power/mass main=0.0861 hp/lb |power/mass alt=142 W/kg
|guns=3× .30 in (7.62 mm) Browning machine guns |bombs=2,500 lb (1,100 kg); 4,000 lb (1,800 kg) on short runs
}}
External links
Related content
{{aircontent |related=
|similar aircraft=
|sequence=
- LB-series: LB-10 - LB-11 - XLB-12 - LB-13 - LB-14
- B-series: B-3 - B-4 - B-5 - B-6 - Y1B-7 - XB-8 - Y1B-9
|lists=
}}