- Industry: Aviation
- Number of terms: 16387
- Number of blossaries: 0
- Company Profile:
Aviation Supplies & Academics, Inc. (ASA) develops and markets aviation supplies, software, and books for pilots, flight instructors, flight engineers, airline professionals, air traffic controllers, flight attendants, aviation technicians and enthusiasts. Established in 1947, ASA also provides ...
A powerplant whose propeller is mounted at the rear of the airplane and pushes, rather than pulls, the airplane through the air.
Industry:Aviation
A power-recovery device used in the exhaust system of a reciprocating engine.
A blow-down turbine is a velocity-type turbine driven by the exhaust gases from the engine and coupled through a fluid coupling to the engine crankshaft. Blow-down turbines are also called power-recovery turbines, or PRTs.
Industry:Aviation
A precision aneroid barometer at a weather observation station, calibrated to indicate directly the altimeter setting.
Industry:Aviation
A precision cutting tool used to smooth the inside of a drilled hole and enlarge it to an accurately specified dimension. The diameter of the hole cut by an expansion reamer can be increased a few thousandths of an inch by adjusting a wedge inside the blades to move them outward.
Industry:Aviation
A precision electric motor whose output shaft position is changed in steps by pulses from the control device. Stepping motors can make high-torque changes in small angular increments to their output shaft.
Industry:Aviation
A precision electrical switch, used to turn a mechanism on or off when some part of the mechanism reaches a specific position or location. Limit switches are actuated by a very short movement of the actuating control, and they actuate at exactly the same position of the control each time.
Industry:Aviation
A precision hand tool used to measure the amount of torque being applied to a threaded fastener by the wrench. Torque is normally measured by measuring the amount a beam in the wrench bends when the torque is being applied.
Industry:Aviation
A precision instrument approach to touchdown and, in some cases, through the landing rollout.
An autoland approach is performed by the aircraft autopilot which is receiving position information and/or steering commands from onboard navigation equipment.
Industry:Aviation
A precision instrument that senses pressure changes by the change in frequency of a quartz oscillator. When the quartz crystal controlling the frequency of the oscillator is acted on by the pressure being measured, the oscillator frequency changes. The amount of frequency change is proportional to the amount of pressure being measured.
Industry:Aviation
A precision instrument used to measure the tension on a steel control cable installed in an aircraft. The tensiometer holds the cable at two points, and an anvil presses on the cable between these points and deflects it a specific amount. The amount of force needed to deflect the cable is measured, and this value is used on a chart to determine the tension on this particular type and diameter of cable.
Industry:Aviation
