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The sole XB-44 Superfortress was a B-29 Superfortress converted to test the possibility of using the R-4360 radial engine.. Development of an improved B-29 started in 1944, with the desire to replace the unreliable Wright R-3350 Duplex-Cyclone engines with the more powerful four-row, 28-cylinder Pratt & Whitney R-4360 Wasp Major radial engines, America's largest-ever displacement aircraft ...
The Boeing C-97 Stratofreighter is a long-range heavy military cargo aircraft developed from the B-29 and B-50 bombers. Design work began in 1942, the first of three prototype XC-97s flew on 9 November 1944 and the first of six service-test YC-97s flew on 11 March 1947.
The Lucky Lady II was a B-50 of the 43rd Bombardment Group, equipped with 12 .50-caliber (12.7mm) machine guns. For its circumnavigation mission, a fuel tank was added in the bomb bay for extra range. The mission required a double crew with three pilots, under the command of Capt. James Gallagher. The crews rotated in shifts of four to six hours.
By 1943 the new Boeing B-29 Superfortress was flying with R-3350s. The engines remained temperamental, and the rear cylinders tended to overheat, partially due to inadequate clearance between the cylinder baffles and the cowl. A number of changes were introduced to improve cooling, and the aircraft was rushed into service in the Pacific in 1944 ...
B-29 Superfortress: 1946: 1953 Combat aircraft: B-36 Peacemaker: 1948: 1958 Combat aircraft: B-45 Tornado: 1950: 1953 Combat aircraft: B-47 Stratojet: 1951: 1965 Combat aircraft: B-50 Superfortress: 1948: 1954 Combat aircraft: B-52 Stratofortress: 1955: 1992 Combat aircraft: B-57 Canberra: 1956: 1962 Combat aircraft: B-58 Hustler: 1960: 1969 ...
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Flight test data collected from the original YB-49 test flights were used in the development of the B-2 bomber. [citation needed] Shortly before his death in February 1981, Jack Northrop learned from the Northrop Corporation of the company's flying wing bid for the future B-2; he remarked: "I know why God has kept me alive for the past 25 years."
1983 (25 January): First Boeing 757, named Windsor Castle, is delivered to British Airways. The aircraft was retired from passenger service in 2001 but is still believed to be flying cargo.