- Industry: Government
- Number of terms: 35337
- Number of blossaries: 0
- Company Profile:
A reciprocating engine piston that is not round, but is ground so that its diameter parallel to the wrist pin is slightly smaller than its diameter perpendicular to the pin. The mass of metal used in the wrist pin boss, the enlarged area around the wrist pin hole, expands when heated, and when the piston is at its operating temperature, it is perfectly round.
Industry:Aviation
A reciprocating engine that depends upon atmospheric pressure to force the fuel-air mixture into the cylinders. Naturally aspirated engines are neither supercharged nor turbocharged.
Industry:Aviation
A reciprocating engine that has had its sea-level rated horsepower increased by supercharging. This is the same as a ground-boosted engine.
Industry:Aviation
A reciprocating engine that has power recovery turbines in its exhaust system. The power extracted from the exhaust by these turbines is directed into the engine crankshaft through a fluid coupling.
Industry:Aviation
A reciprocating engine that uses a mechanically driven compressor to increase the air pressure before it enters the engine cylinders.
Industry:Aviation
A reciprocating engine with all of the cylinders arranged in a straight line.
Industry:Aviation
A reciprocating engine with axial cylinders arranged around a central shaft. Rollers on the pistons in the cylinders press against a sinusoidal cam mounted on the shaft to produce rotation of the shaft.
Industry:Aviation
A reference position on a propeller blade that is a specified number of inches from the center of the propeller hub.
Industry:Aviation
A regulatory notice sent out by the FAA to the registered owner of an aircraft informing him or her of the discovery of a condition that keeps the aircraft from continuing to meet its conditions for airworthiness. Also called AD notes, they are covered by Federal Aviation Regulations part 39 Airworthiness Directives. They must be complied with within the specified time, and the fact, date, and method of compliance must be recorded in the aircraft maintenance records.
Industry:Aviation
A repair to a component that if improperly done might appreciably affect weight, balance, structural strength, performance, powerplant operation, flight characteristics, or other qualities affecting airworthiness; a repair not done according to accepted practices, or one that cannot be done by elementary operations.
Industry:Aviation
