Role Heavy bomber National origin United States Manufacturer Boeing First flight 28 July 1935[1] Introduction April 1938 Retired 1968 (Brazilian Air Force) Status Retired Primary users United States Army Air Forces Royal Air Force Produced 1936–1945 Number built 12,731[2][3] Variants Boeing XB-38 Flying Fortress Boeing YB-40 Flying Fortress Boeing C-108 Flying Fortress Developed into Boeing 307 Stratoliner
On 8 August 1934, the USAAC tendered a proposal for a multiengine bomber to replace the Martin B-10. The Air Corps was looking for a bomber capable of reinforcing the air forces in Hawaii, Panama, and Alaska.[9] Requirements were for it to carry a "useful bombload" at an altitude of 10,000 ft (3,000 m) for 10 hours with a top speed of at least 200 mph (320 km/h)
The aircraft went through several alterations in each of its design stages and variants. Of the 13 YB-17s ordered for service testing, 12 were used by the 2nd Bomb Group of Langley Field, Virginia, to develop heavy bombing techniques, and the 13th was used for flight testing at the Material Division at Wright Field, Ohio.[36] Experiments on this aircraft led to the use of a quartet of General Electric turbo-superchargers, which later became standard on the B-17 line. A 14th aircraft, the YB-17A, originally destined for ground testing only and upgraded with the turbochargers,[57] was redesignated B-17A after testing had finishedCeiling
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Boeing provides comprehensive C-17 Globemaster III training solutions for aircrews and loadmasters with advanced simulation, courseware and computer-based training. C-17 operators can practice.
A high-wing, four-engine, T-tailed military transport aircraft, the multi-service C-17 can carry large equipment,
Boeing provides comprehensive C-17 Globemaster III training solutions for aircrews and loadmasters with advanced simulation, courseware and computer-based training. C-17 operators can practice