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Gas turbine aircraft engines such as turbojets, turboshafts and turbofans often use air/pneumatic starting, with the use of bleed air from built-in auxiliary power units (APUs) or external air compressors now seen as a common starting method. Often only one engine needs be started using the APU (or remote compressor). After the first engine is ...
The gas turbine compressor required to start a J79 with impingement starting was sufficient to start two J79 engines simultaneously in a B-58 when using air turbine starters. [7] An ATS has its own turbine and gears to change its low torque and high speed to low speed and high torque at the engine mounting pad.
The engine weighs approximately 2,500 lb (1,100 kg) and occupies a volume of 40 cu ft (1.1 m 3), measuring 63 in × 40 in × 28 in (1,600 mm × 1,020 mm × 710 mm). [4] The engine can use a variety of fuels, including jet fuel, gasoline, diesel and marine diesel. [2] The engine is a three-shaft machine composed of five sub-modules: [4]
Unlike a turbine engine, a hot start is unlikely to damage a reciprocating fuel injected engine. However, with improper starting procedure the situation may progress to the point that the operator depletes the starter battery before successfully starting the engine and there is risk of battery or starter damage and excess wear due to these ...
The Hawker Typhoon and Hawker Tempest also used the Coffman system to start their Napier Sabre engines. Cartridge starters used on a number of jet engines, including such engines as the Rolls-Royce Avon, which were used in the English Electric Canberra and Hawker Hunter aircraft, used a high gas volume cartridge driving a turbine instead of a ...
Combustor or combustion chamber — Fuel is burned continuously after initially being ignited during the engine start. Turbine — The turbine is a series of bladed discs that act like a windmill, extracting energy from the hot gases leaving the combustor. Some of this energy is used to drive the compressor. Turboprop, turboshaft and turbofan ...
The first German jet engines built during the Second World War used a mechanical APU starting system designed by the German engineer Norbert Riedel.It consisted of a 10 horsepower (7.5 kW) two-stroke flat engine, which for the Junkers Jumo 004 design was hidden in the engine nose cone, essentially functioning as a pioneering example of an auxiliary power unit for starting a jet engine.
The General Electric LM6000 is a turboshaft aeroderivative gas turbine engine. The LM6000 is derived from the CF6-80C2 aircraft turbofan.It has additions and modifications designed to make it more suitable for marine propulsion, industrial power generation, and marine power generation use.