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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 ...
Lucky Lady III was one of three Boeing B-52 Stratofortresses that made the circumnavigation in January 1957 as part of Operation Power Flite, flying from Castle Air Force Base in California and completing the 24,325 mi (39,147 km; 21,138 nmi) flight in 45 hours and 19 minutes (at an average ground speed of 536 mph (863 km/h; 466 kn)) with the ...
Southwest Airlines began revenue flights on June 18, 1971, using three Boeing 737-200 aircraft, and operated the type exclusively during the airline's early history. These aircraft were not originally ordered by Southwest, but rather were delivery slots taken over from Air California, Aloha Airlines, and Pacific Southwest Airlines, [8] including a lone 737-200 Combi which was later traded with ...
Southwest Airlines pioneered the low-fare, no-frills airline model. But Southwest is now ending open-seat boarding, a distinct part of its successful five-decade-long model and its brand identity.
Southwest Airlines said Thursday that it plans to drop the open-boarding system it has used for more than 50 years and will start assigning passengers to seats, just like all the other big airlines.
A second flight will take place in October 1948 and will be successful. October 14 – U.S. Air Force Captain Chuck Yeager takes the rocket-powered Bell X-1 past the speed of sound in the first controlled, supersonic, level flight. The flight, which achieves Mach 1.06, sets a new world air speed record of 807.2 mph (1,299.1 km/h). A few days ...
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.
In aviation circles, a more specific model designation is sometimes used where the last two digits of the series designator are replaced by the two-digit, alpha-numeric Boeing customer code, for example, 747-121, representing a 747-100 originally ordered by Pan American World Airways (Boeing customer code 21) or 737-7H4, representing a 737-700 ...