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| u.s. fighter aircraft 1930-1939 | |
| fb6, boeing | |
| boeing aircraft | |
| xf6b | |
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Ordered by the Navy on June 30 , 1931 , the plane was a derivative of the F4B ; it was nearly entirely of metal construction, with only the wings still fabric-covered. It was powered by a 625 hp Pratt & Whitney R-1535-44 Twin Wasp. The intended role of this design turned out to be uncertain. While its rugged construction was capable of withstanding high G-forces, it weighed in at 3,704 pounds (700 pounds more than the F4B), and did not have the maneuverability needed in a fighter aircraft. It was, however, suitable as a Bomber Fighter , and in March 1934 the prototype was redesignated XBFB-1 in recognition of its qualities. Even so, various ideas were tried to improve its fighter qualifications, such as improved engine Cowling , streamlining around the landing gear, and even a three-bladed propeller (two-bladed props being standard). REFERENCES
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