An aircraft engine is a component of the propulsion system for an aircraft that generates mechanical power. Aircraft engines are almost always either lightweight piston engines or gas turbines, except for small multicopter UAVs which are almost always electric aircraft.
The McDonnell XF-88 Voodoo was a long-range, twin-engine jet fighter aircraft with swept wings designed for the United States Air Force. Although it never entered service, its design was adapted for the subsequent supersonic F-101 Voodoo.
The Theseus was the Bristol Aeroplane Company's first attempt at a gas-turbine engine design, a turboprop that delivered just over 2,000 hp (1,500 kW). A novel feature was the use of a heat exchanger to transfer waste heat from the exhaust to the compressor exit. The engine was soon superseded by the Proteus design with more power, and the only extended use of the engine was in two Handley Page Hermes 5 development aircraft.
The Pratt & Whitney J57 is an axial-flow turbojet engine developed by Pratt & Whitney in the early 1950s. The J57 was the first 10,000 lbf (45 kN) thrust class engine in the United States. The J57/JT3C was developed into the J75/JT4A turbojet, JT3D/TF33 turbofan and the PT5/T57 turboprop.
The Douglas A2D Skyshark is an American turboprop-powered attack aircraft built by the Douglas Aircraft Company for the United States Navy.
The Consolidated Vultee XP-81 is a development of the Consolidated Vultee Aircraft Corporation to build a single seat, long range escort fighter that combined use of both turbojet and turboprop engines. Although promising, the lack of suitable engines combined with the end of World War II doomed the project.
The Hiller X-18 was an experimental cargo transport aircraft designed to be the first testbed for tiltwing and V/STOL technology.
The North American Aviation XA2J "Super Savage" was a prototype carrier-based attack aircraft built in the early 1950s. It was developed by North American Aviation (NAA) from the smaller AJ Savage.
The Kuznetsov NK-12 is a Soviet turboprop engine of the 1950s, designed by the Kuznetsov design bureau. It drives two large four-bladed contra-rotating propellers, 5.6 m in diameter, and 6.2 m in the NK-12MA and NK-12MV. It is the most powerful turboprop engine to enter service.
The Piper PA-31T Cheyenne is a turboprop development of the earlier PA-31P Pressurized Navajo.
The Bristol Orion aero engine was a two-shaft turboprop intended for use in later marks of the Bristol Britannia and the Canadair CL-44. Although the engine was built and underwent a development program, the BE.25 Orion project was cancelled in 1958 by the British Ministry of Supply. At that time, interest in turboprop-powered aircraft was beginning to wane, because of the successful introduction of the Boeing 707 and Douglas DC-8 jetliners into airline service.
The Rolls-Royce RB.50 Trent was the first Rolls-Royce turboprop engine.
The Napier Eland was a British turboshaft or turboprop gas-turbine engine built by Napier & Son in the early 1950s. Production of the Eland ceased in 1961 when the Napier company was taken over by Rolls-Royce.
The Fairchild J83 turbojet was developed starting in 1955 to power cruise missiles used as un-armed decoys for bomber aircraft. The engine's development was terminated in November 1958.
The Gulfstream American Hustler was a 1970s American mixed-power executive/utility aircraft designed by American Jet Industries. The aircraft had a nose-mounted turboprop and a tail-mounted turbofan.
The General Electric T31 was the first turboprop engine designed and built in the United States.
The Pratt & Whitney T34 was an axial flow turboprop engine designed and built by Pratt & Whitney. Its model name was Turbo-Wasp.
The Garrett TPF351 is a turboprop engine designed by Garrett Engine Division of AlliedSignal Aerospace Company. Initiated by Garrett in October 1987, the TPF351-20 engine was selected by Embraer to power the Embraer/FMA CBA 123 Vector, a high-speed commuter "pusher" aircraft. It was first tested on May 19, 1989 and then ground tested and flight tested on a Boeing 720 in July 1990. The first prototype CBA123 was tested in July 1990, followed by a flight to the Farnborough Air Show in September of the same year. Both programs were cancelled in 1994.
The Napier Naiad was a British turboprop gas-turbine engine designed and built by D. Napier & Son in the late 1940s. It was the company's first gas turbine engine. A twin version known as the Coupled Naiad was developed but both engine projects were cancelled before finding a market. The Naiad was also used, in adapted form, in the Napier Nomad turbo-compound engine design.
The Northrop-Hendy T37 Turbodyne was an American turboprop engine developed by the Turbodyne Division of Northrop in the late 1940s.
