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The Republic XF-84H "Thunderscreech" is an American experimental turboprop aircraft derived from the F-84F Thunderstreak.Powered by a turbine engine that was mated to a supersonic propeller, the XF-84H had the potential of setting the unofficial air speed record for propeller-driven aircraft, but was unable to overcome aerodynamic deficiencies and engine reliability problems, resulting in the ...
Several witnesses estimated that the aircraft flew over them at an altitude of 100 to 200 feet (30 to 60 m) above the ground. [1]: 2 According to most of the interviewed witnesses, the airplane suddenly rolled to the left until the wings were perpendicular to the ground. The aircraft then descended in a nose-down attitude and disappeared from ...
Colgan Air Flight 3407 (marketed as Continental Connection Flight 3407) was a scheduled passenger flight from Newark, New Jersey to Buffalo, New York on February 12, 2009. ...
The world's first turboprop was designed by the Hungarian mechanical engineer György Jendrassik. [23] Jendrassik published a turboprop idea in 1928, and on 12 March 1929 he patented his invention. In 1938, he built a small-scale (100 Hp; 74.6 kW) experimental gas turbine. [24]
The De Havilland Canada DHC-8, [2] commonly known as the Dash 8, is a series of turboprop-powered regional airliners, introduced by de Havilland Canada (DHC) in 1984. DHC was bought by Boeing in 1986, then by Bombardier in 1992, then by Longview Aviation Capital in 2019; Longview revived the De Havilland Canada brand. [3]
The Pratt & Whitney Canada PT6 is a turboprop aircraft engine produced by Pratt & Whitney Canada.Its design was started in 1958, it first ran in February 1960, first flew on 30 May 1961, entered service in 1964, and has been continuously updated since.
The significance of higher pressure ratio to fuel consumption was demonstrated in 1948 when the J57 (12:1) was selected for the Boeing B-52 Stratofortress in place of a turboprop. [51] Boeing previous experience with turbojet specific fuel consumptions up to that time was the General Electric J47 (5.4:1), used in the Boeing B-47 Stratojet ...
A brake overheat warning system would have warned the crew that there was a problem. However, no such system was required on this type of aircraft, so Flight 420's crew had no idea that a fire had developed. The fire then ruptured the aircraft's hydraulic line, located near the wheel well, which caused the fire to intensify. [1]: 29-33