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  2. Constant speed drive - Wikipedia

    en.wikipedia.org/wiki/Constant_Speed_Drive

    CSDs are mainly used on airliner and military aircraft jet engines to drive the alternating current (AC) electrical generator. In order to produce the proper voltage at a constant AC frequency, usually three-phase 115 VAC at 400 Hz, an alternator needs to spin at a constant specific speed (typically 6,000 RPM for air-cooled generators). [1]

  3. Auxiliary power unit - Wikipedia

    en.wikipedia.org/wiki/Auxiliary_power_unit

    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.

  4. Pratt & Whitney - Wikipedia

    en.wikipedia.org/wiki/Pratt_&_Whitney

    Pratt & Whitney's large commercial engines power more than 25 percent of the world's passenger aircraft fleet and serve more than 800 customers in 160 countries. With over 16,000 large commercial engines installed today, Pratt & Whitney provides power to hundreds of airlines and operators, from narrow-bodied airplanes to wide-bodied jumbo ...

  5. Allison J35 - Wikipedia

    en.wikipedia.org/wiki/Allison_J35

    A J35 with exhaust duct removed, exposing the power turbine. The General Electric/Allison J35 was the United States Air Force's first axial-flow (straight-through airflow) compressor jet engine.

  6. General Electric GE9X - Wikipedia

    en.wikipedia.org/wiki/General_Electric_GE9X

    In February 2012, GE announced studies on a more efficient derivative of the GE90, calling it the GE9X, to power both the -8 and -9 variants of the new Boeing 777X.It was to feature the same 128 in (325 cm) fan diameter as the GE90-115B with thrust decreased by 15,800 lbf (70 kN) to a new rating of 99,500 lbf (443 kN) per engine. [1]

  7. GE Aerospace - Wikipedia

    en.wikipedia.org/wiki/GE_Aerospace

    General Electric Company, doing business as GE Aerospace, [5] is an American aircraft engine supplier that is headquartered in Evendale, Ohio, outside Cincinnati.It is the legal successor to the original General Electric Company founded in 1892, which split into three separate companies between November 2021 and April 2024, adopting the trade name GE Aerospace after divesting its healthcare ...