21 Terms
Home > Industry/Domain > Aviation > Powerplant
Powerplant
The complete installation of an aircraft engine, propeller, and all accessories needed for its proper function.
Industry: Aviation
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Powerplant
active clearance control (ACC)
Aviation; Aircraft maintenance
A system for controlling the clearance between tips of the compressor and turbine blades and the case of high-performance turbofan engines. When the engine is operating at maximum power, the blade ...
thermal anti-ice (TAI)
Aviation; Aircraft maintenance
A system used to prevent the formation of ice on an aircraft by flowing heated air inside the structure.
octane rating
Aviation; Aircraft maintenance
A system used to rate the antidetonation characteristics of a reciprocating engine fuel. Fuel with an octane rating of 80 performs in a laboratory test engine the same as the fuel made of a mixture ...
antidetonation injection (ADI) system
Aviation; Aircraft maintenance
A system used with some large reciprocating engines in which a mixture of water and alcohol is sprayed into the engine with the fuel when operating at extremely high power. The fuel-air mixture is ...
stroboscopic tachometer
Aviation; Aircraft maintenance
A tachometer used to measure the speed of any rotating device without physical contact. A highly accurate variable-frequency oscillator triggers a high-intensity strobe light. When the lamp is ...
vertical tape instrument
Aviation; Aircraft maintenance
A tall rectangular instrument that displays the quantity of the parameter being measured by a movable strip of colored tape. The presentation resembles a vertical bar graph.
thermostatic valve
Aviation; Aircraft maintenance
A temperature-sensitive valve that controls the temperature of oil in an aircraft engine. When the oil is cold, the valve shifts and directs the oil through the oil cooler.
