Aviation

Aviation

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

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Aviation > Powerplant

gross thrust

Aviation; Aircraft maintenance

The thrust produced by a turbojet or turbofan engine when the engine is static or not moving. The air is considered to have no inlet velocity, and the velocity of the gas leaving ...

retarded sparks

Aviation; Aircraft maintenance

The timing of the firing of the spark plugs used to start a reciprocating engine. The sparks for starting occur later in terms of crankshaft rotation than those used for normal ...

profile tip

Aviation; Aircraft maintenance

The tip of an axial-flow compressor bladed whose thickness is reduced to give it a higher resonant frequency so it will not be subject to the vibrations that would affect a blade ...

abradable tip

Aviation; Aircraft maintenance

The tip of some axial-flow compressor blades constructed so that it will abrade, or wear away, upon contact with the compressor housing, which ensures the minimum tip clearance ...

precailing torque

Aviation; Aircraft maintenance

The torque required to turn a threaded fastener before it contacts the surface it is intended to hold.

newton

Aviation; Aircraft maintenance

The unit of force needed to accelerate a mass of one kilogram one meter per second per second. One newton is equal to 1000,000 dynes, or 2.248 × 10 111 pound.

dyne

Aviation; Aircraft maintenance

The unit of force that imparts an acceleration of one centimeter per second, per second to a mass of one gram. One dyne is equal to 2.248 ∙ 10-6 pounds.