Aviation

Aviation

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

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Aviation > Powerplant

overrunning clutch

Aviation; Aircraft maintenance

A type of clutch that couples an input shaft with an output shaft. When the input shaft is driven, the output shaft rotates with it. When the output shaft is driven, the output ...

divergent duct

Aviation; Aircraft maintenance

A duct that has an increased cross-sectional area in the direction of flow.

annular duct

Aviation; Aircraft maintenance

A duct, or passage, that surrounds an object. The annular fan-discharge duct surrounds the core engine.

interpole

Aviation; Aircraft maintenance

A field pole in a compound-wound DC generator used to minimize armature reaction. Interpoles are located between each of the regular field poles, and their coils are in series ...

hybrid spark plug

Aviation; Aircraft maintenance

A fine-wire spark plug that has a platinum center electrode and iridium ground electrodes.

HRD fire extinguisher

Aviation; Aircraft maintenance

A fire extinguisher that carries the extinguishing agent in a sealed sphere or cylinder. When the agent-discharged switch is closed, an ignited powder charge drives a cutter ...