Douglas B-7
| Douglas Y1B-7
|
|
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| Description
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| Rôle | Light bomber
|
| Crew | Four
|
| First Flight |
|
| Entered Service | n/a
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| Manufacturer | Douglas Aircraft Company
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| Number built | 1 XB-7, 7 Y1B-7
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| Dimensions
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| Length | 45 ft 7 in | 13.9 m
|
| Wingspan | 65 ft 3 in | 19.9 m
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| Height | 12 ft 1 in | 3.7 m
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| Wing area | ft² | m²
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| Weights
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| Empty | lb | kg
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| Loaded | 11,177 lb | 5,069 kg
|
| Maximum takeoff | lb | kg
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| Capacity |
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| Powerplant
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| Engines | Curtiss V-1570-27 "Conquerors" (2)
|
| Power | 675 hp | 503.6 kW
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| Performance
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| Maximum speed | 182 mph | 292.8 km/h
|
| Combat range | 600 miles | 965 km
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| Ferry range | 400 miles | 643 km
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| Service ceiling | 20,400 ft | 6,217 m
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| Rate of climb | ft/min | m/min
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| Wing loading | lb/ft² | kg/m²
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| Power/Mass | .12 hp/lb | .199 kW/kg
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| Armament
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| Guns | Browning .30-calibre machine guns (2)
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| Bombs | 1,200lb
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The Douglas Y1B-7 was the first monoplane given the B- 'bomber' designation. The monoplane was more pratical and less expencive than the biplane, and the U.S. army chose to experiment with monoplanes for this reason. At the time the XB-7 was ordered, it was being tested by Douglas Aircraft as an observational plane, the Martin B-10 were on their way.
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