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  2. Emergency power system - Wikipedia

    en.wikipedia.org/wiki/Emergency_power_system

    A backup generator for a large apartment building A backup power fuel cell for telecom applications A portable emergency power generator in a shipping container. An emergency power system is an independent source of electrical power that supports important electrical systems on loss of normal power supply.

  3. United Air Lines Flight 266 - Wikipedia

    en.wikipedia.org/wiki/United_Air_Lines_Flight_266

    The flight engineer could have mistakenly set the aircraft's essential power switch to the APU position, rather than the standby (backup) position; the switch has to pass through a gate when turning from the APU position to the standby position, and the flight engineer, turning the switch until he encountered resistance, may have assumed that ...

  4. Government contract flight - Wikipedia

    en.wikipedia.org/wiki/Government_contract_flight

    A government contract flight is a type of charter airline operation contracted with a government agency.. In the United States, the massive mobility requirements during World War II proved that military transport could not meet all the logistical needs that might arise.

  5. Standby generator - Wikipedia

    en.wikipedia.org/wiki/Standby_generator

    Standby generators. A standby generator is a back-up electrical system that operates automatically. [1] Within seconds of a utility outage an automatic transfer switch senses the power loss, commands the generator to start and then transfers the electrical load to the generator. The standby generator begins supplying power to the circuits. [2]

  6. Aircraft engine starting - Wikipedia

    en.wikipedia.org/wiki/Aircraft_engine_starting

    The compressed air can be supplied from an on-board auxiliary power unit (APU), a portable gas generator used by ground crew or by cross feeding bleed air from a running engine in the case of multi-engined aircraft. [19] The Turbomeca Palouste gas generator was used to start the Spey engines of the Blackburn Buccaneer.

  7. Constant speed drive - Wikipedia

    en.wikipedia.org/wiki/Constant_Speed_Drive

    Constant speed drive for Boeing 727, made by Sundstrand Corporation. A constant speed drive (CSD) also known as a constant speed generator, is a type of transmission that takes an input shaft rotating at a wide range of speeds, delivering this power to an output shaft that rotates at a constant speed, despite the varying input.

  8. Wingless Electromagnetic Air Vehicle - Wikipedia

    en.wikipedia.org/wiki/Wingless_Electromagnetic...

    The Wingless Electromagnetic Air Vehicle (WEAV) is a heavier-than-air flight system which can self-lift, hover, and fly reliably with no moving components The Wingless Electromagnetic Air Vehicle ( WEAV ) is a heavier than air flight system developed at the University of Florida , funded by the Air Force Office of Scientific Research .

  9. Survival radio - Wikipedia

    en.wikipedia.org/wiki/Survival_radio

    Nicknamed the Gibson Girl because of its hourglass shape, it was supplied with a fold-up metal frame box kite, and a balloon with a small hydrogen generator, for which the flying line was the aerial wire. Power was provided by a hand cranked generator. The transmitter component was the BC-778.

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