- Industry: Government
- Number of terms: 35337
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A form of reciprocating engine in which the cylinders radiate out from a small central crankcase. The pistons in the cylinders drive a central crankshaft which in turn drives the propeller.
Industry:Aviation
A form of reciprocating engine used in some early aircraft. The crankshaft is rigidly attached to the airframe, and the propeller, crankcase, and cylinders all revolve as a unit.
Industry:Aviation
A freewheeling, nonreversible clutch that allows torque to be applied to a driven unit in one direction only.
Industry:Aviation
A fuel metering device that uses a floatactuated needle valve to maintain fuel level slightly below the edge of the discharge nozzle.
Industry:Aviation
A fuel-air mixture that contains less than 15 parts of air to 1 part of fuel, by weight.
Industry:Aviation
A fuel-air mixture that contains more than 15 parts of air to 1 part of fuel, by weight.
Industry:Aviation
A gage, in the form of a thin metal rod, used to measure the level of liquid in a reservoir. The dipstick is pushed into the reservoir until it contacts a built-in stop; then it is removed and visually inspected. The level of liquid in the reservoir is indicated by the amount of the dipstick wet by the liquid.
Industry:Aviation
A gas turbine engine that has both centrifugal and axial-flow compressors.
Industry:Aviation
A gas turbine engine that produces thrust by accelerating the air flowing through it. A minimum of energy is extracted by the turbine, with the majority used to produce an exhaust velocity much greater than the inlet velocity. The amount of thrust produced by the engine is determined by the amount the air is accelerated as it flows through the engine.
Industry:Aviation
A gas turbine engine with a turbine stage on a shaft independent of the shaft used to drive the compressor. Free turbines are used to drive the propeller reduction gear in a turboprop engine and the rotor transmission in a helicopter.
Industry:Aviation
