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

viscosity index (VI)

Aviation; Aircraft maintenance

A measure of change in viscosity of an oil as it changes temperature. The higher the viscosity index, the less the viscosity changes.

thrust specific fuel consumption (TSFC)

Aviation; Aircraft maintenance

A measure of efficiency of a turbojet or turbofan engine. It is a measure of the number of pounds of fuel burned per hour for each pound of thrust produced.

durability

Aviation; Aircraft maintenance

A measure of engine life. Durability is usually measured in TBO hours.

revolutions per minute (RPM)

Aviation; Aircraft maintenance

A measure of rotational speed. One rpm is one revolution made in one minute.

runout

Aviation; Aircraft maintenance

A measure of the amount a shaft, flange, or disk is bent or fails to run true. Runout is normally measured with a dial indicator.

brake specific fuel consumption (BSFC)

Aviation; Aircraft maintenance

A measure of the amount of fuel used for a given amount of power produced by a heat engine. BSFC is expressed in pounds of fuel burned per hour for each brake horse-power the engine is producing.

A measure of the effectiveness with which an aircraft engine converts the fuel it burns into useful thrust. It is the ratio of the thrust horsepower produced by a propeller to the torque horsepower ...