Aviation

Aviation

Dealing with vehicles or machines used in flight or propulsion through the air.

14Categories 89331Terms

Add a new term

Contributors in Aviation

Become a Contributors

Aviation > 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 ...

propulsive efficiency

Aviation; Aircraft maintenance

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 ...