AMTStandards.orgAviation maintenance

Piston

A sliding plug in an actuating cylinder used to convert pressure into force and then into work.

Aviation Maintenance Technician Handbook — Airframe, p. G-25

Also defined in 1 more source

The movable plug inside the cylinder of a reciprocating engine. The piston moves in and out to compress the air/fuel mixture and to transmit the force from the expanding gas in the cylinder to the crankshaft.

Aviation Maintenance Technician Handbook — Powerplant, p. G-20

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