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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 ...
A number of aircraft have been claimed to be the fastest propeller-driven aircraft. This article presents the current record holders for several sub-classes of propeller-driven aircraft that hold recognized, documented speed records in level flight. Fédération Aéronautique Internationale (FAI) records are the basis for this article. [1]
The Double Mamba (rarely known as the Twin Mamba) was a development of the Armstrong Siddeley Mamba with two Mambas driving contra-rotating propellers through a combining gearbox.
Production period column shows overall production date span of all types included in "Numbers produced" column, disregarding production hiatuses and changes in manufacturer, while including close variants and licensed production. a pale-green background indicates aircraft still in production.
The aircraft's Fowler flaps feature a completely recessed mechanism and reduce stall speed from 76 to 58 kn (141 to 107 km/h) at maximum weight. The landing gear was designed and manufactured by Gomolzig in Germany. It is unusual in its geometry and sealed behind doors once retracted. Its complexity contributes to the aircraft's operating costs.
The first production Cheyenne III flew for the first time on May 18, 1979, and FAA certification was granted in early 1980. Compared with the Cheyenne II, the PA-42-720 was about 1 m (3 ft) longer, was powered by 537 kW (720-shp) PT6A-41 turboprops and introduced a T-tail, the most obvious external difference between the PA-31T and PA-42, as ...
The high wing design was used for a number of reasons, including no wing spar in the cabin and in the event of a dual fuel pump failure, fuel flow is helped by gravity. The EA-500's cabin is spacious, 55 inches across by 49 inches tall; also the windshield has a fast taper, which wraps up around the two pilots.
Contra-rotating propellers Contra-rotating propellers on the Rolls-Royce Griffon-powered P-51XR Mustang Precious Metal at the 2014 Reno Air Races. Aircraft equipped with contra-rotating propellers (CRP) [1] coaxial contra-rotating propellers, or high-speed propellers, apply the maximum power of usually a single piston engine or turboprop engine to drive a pair of coaxial propellers in contra ...