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| Douglas B-19
|
|
|
| Description
|
| Rôle | Heavy bomber prototype
|
| Crew | ≤18
|
| First Flight | 1941 June 27
|
| Entered Service | n/a
|
| Manufacturer | Douglas Aircraft Company
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| Number built | 1
|
| Dimensions
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| Length | 132 ft 2 in | 40.2 m
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| Wingspan | 212 ft | 64.6 m
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| Height | 42 ft 9in | 13 m
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| Wing Area | 4,492 ft² | 417 m²
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| Weights
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| Empty | 140,230 lbs | 63,504 kg
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| Loaded | 158,930 lbs | 71,986 kg
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| Maximum takeoff | 164,000 lbs | 74,390 kg
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| Powerplant
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| Engine | Wright R-3350-5 radials
>>Allison V-3420-11 inlines (4)
|
| Power (each) | 2,000 hp
>>2,600 hp | 1492 kW
>>1940 kW
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| Performance
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| Maximum speed | 224 mph
>>265 mph | 361 km/h
>>427 km/h
|
| Cruise speed | 135 mph
>>165 mph | 217 km/h
>>266 km/h
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| Combat range | 7,750 miles | 12,478 km
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| Ferry range | 7,900 miles | 12,719 km
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| Service ceiling | 23,900 ft
>>39,000 ft | 7,280 m
>>11,887 m
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| Rate of climb | ft/min | m/min
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| Wing loading | 35.4 lb/ft² | 172.6 kg/m²
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| Power/Mass | .05 hp/lb
>>.0654 hp/lb | .083 kW/kg
>>.108 kW/kg
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| Armament
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| Guns | .37mm cannon (2), .50-calibre (5) and .30-calibre machine guns (6)
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| Bombs | 18,700 lbs | 8482 kg
|
The Douglas XB-19 was the largest bomber built for the U.S. Army prior to 1938. Its combined length and wingspan (344 ft, 105 m) was only 12% less than that of the Convair B-36 (392 ft, 119 m), the largest bomber ever made for the United States. It was originally given the designation XBLR-2 (eXperimental Bomber, Long Range, model 2).
The purpose of the XB-19 project was to test the flight characteristics and design techniques associated with giant bombers. Douglas Aircraft Company strongly wanted to cancel the project, because it was extremely expencive. Despite advances in technology that made the XB-19 obsolete before it was even completed, the Army felt that it would be very useful for testing. Its construction took so long that competition for the contracts to make the XB-35 and XB-36 occurred two months before its first flight.
The plane finally flew on 1941 June 27, more than three years after the construction contract was awarded. In 1943, the original engines were replaced with Allison V-3420-11 inline engines. After completion of testing, the XB-19 served as a cargo carrier until it was scrapped in 1949.
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