XB-38 Flying Fortress
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The XB-38 Flying Fortress was a prototype United States bomber aircraft of World War II. The XB-38 was the result of a modification project undertaken by Boeing and Vega (a subsidiary of Lockheed) on a B-17 Flying Fortress to fit it with liquid-cooled Allison V-1710-89 inline engines. It was meant as an improved version of the B-17, and a variant that could be used if air-cooled Wright R-1820 radial engines became scarce. Completing the modifications took less than a…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The XB-38 Flying Fortress was a prototype United States bomber aircraft of World War II. The XB-38 was the result of a modification project undertaken by Boeing and Vega (a subsidiary of Lockheed) on a B-17 Flying Fortress to fit it with liquid-cooled Allison V-1710-89 inline engines. It was meant as an improved version of the B-17, and a variant that could be used if air-cooled Wright R-1820 radial engines became scarce. Completing the modifications took less than a year, and the XB-38 made its first flight on May 19, 1943. Only one prototype was built, and it was developed from an existing B-17 bomber. While the XB-38 delivered a slightly higher top speed, after a few flights it had to be grounded due to a problem with engine manifold joints leaking exhaust gases. Following the fixing of this problem, testing continued until the ninth flight on June 16, 1943.