Aviation

Aviation

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

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Aviation > Powerplant

choke nozzle

Aviation; Aircraft maintenance

A nozzle in a gas turbine engine that limits the speed of gases flowing through it. The gases accelerate until they reach the speed of sound, and a normal shock wave forms that ...

thermal expansion coefficient

Aviation; Aircraft maintenance

A number that relates to the change in the physical dimensions of a material as the temperature of the material changes. The thermal expansion coefficient of aluminum is ...

annunciator panel

Aviation; Aircraft maintenance

A panel of warning lights visible to the flight crew. The lights are identified by the name of the system they represent and are often covered with colored lenses. Red lights ...

shower of sparks ignition system

Aviation; Aircraft maintenance

A patented ignition system for reciprocating engines. An induction civrator sends pulsating DC into a set of retard breaker points on one of the magnetos. This provides a hot and ...

time-rite indicator

Aviation; Aircraft maintenance

A patented piston-position indicator used to find the position of the piston in the cylinder of a reciprocating engine. The body of the Time-Rite indicator screws into a spark ...

aeromatic propeller

Aviation; Aircraft maintenance

A patented variable-pitch propeller that has counterweights around the blade shanks and the blades angled back from the hub to increase the effects of aerodynamic and centrifugal ...

isothermal change

Aviation; Aircraft maintenance

A physical change that takes place within a material in which heat energy is added to or taken from the material as needed to keep its temperature constant.