In the event engine-driven fuel pump fails.
An aircraft with an engine.
The F-16 Fighting Falcon is equipped with three primary hydraulic pumps. Two of these are engine-driven pumps, while the third is an electric backup pump. These pumps are essential for operating various flight control surfaces, landing gear, and other hydraulic systems on the aircraft.
The "Cherokee" is a model of Piper Aircraft. It is a single engine, propeller driven, low wing aircraft.
Power sources for propeller driven aircraft are usually either a gas turbine or a piston cylinder engine. There are other, obscure types, usually variations of a internal combustion engine, or an electric motor like in the Helios
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They are driven by electric motors or by compressed air
The propeller pushes or pulls the aircraft forward, once sufficient forward speed is attained the wing can produce lift and the aircraft flies.
When the auxiliary engine is not running or is being assisted by sail power
the P-38 Lightning was one of the fastest propeller driven aircraft of world war 2. it could almost break the sound barrier in a dive
Yes, electric tools are power tools.
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