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Powerplant
The complete installation of an aircraft engine, propeller, and all accessories needed for its proper function.
Industry: Aviation
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Powerplant
adiabatic change
Aviation; Aircraft maintenance
A physical change that takes place within a material in which heat energy is neither added to the material, nor taken away. If a container of gas is compressed, with no heat energy added to or taken ...
permanent magnet
Aviation; Aircraft maintenance
A piece of hardened steel that has been exposed to a strong magnetizing force which has aligned the spin axes of the electrons surrounding its atoms. The high retentivity of the material causes the ...
semiconductor transducer
Aviation; Aircraft maintenance
A piezoelectric crystal that converts input energy of one form, such as pressure, into output energy of another, such as an electrical signal.
standpipe
Aviation; Aircraft maintenance
A pipe which protrudes upward from the base of an oil tank and through which oil used for normal engine lubrication is drawn. In the event of a catastrophic leak when all oil available to the ...
rocker arm
Aviation; Aircraft maintenance
A pivoted arm on the cylinder head of a reciprocating engine. The pushrod forces one end of the rocker arm up, and as the other end moves down, it forces the poppet valve off of its seat.
thermosetting resin
Aviation; Aircraft maintenance
A plastic resin that, once it has been hardened by heat, cannot be softened by heating again.
stepping motor
Aviation; Aircraft maintenance
A precision electric motor whose output shaft position is changed in steps by pulses from the control device. Stepping motors can make high-torque changes in small angular increments to their output ...
