- 업종: 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 species of cloud whose elements have the form of more or less isolated, generally smooth lenses or almonds. Lenticular clouds most often appear in formations on the lee side of a mountain peak as a result of lee waves, and they remain nearly stationary with respect to the terrain.
Lenticular clouds are an indicator of extreme turbulence.
Industry:Aviation
A species of middle cloud of which at least a fraction of its upper part has evidence of vertical development. Vertical development shows up as billowing tops, some of which are taller than they are wide. This gives the top of the cloud layer a crenelated or turreted appearance,
Industry:Aviation
A specific position of the rotor inside the stator of a synchro (a remotely controlled position indicating system). Electrical zero is used as a reference position for meshing gears and installing indicator pointers.
Industry:Aviation
A specified altitude or height (A/H) in the precision approach at which a missed approach must be initiated if the required visual reference to continue the approach has not been established.
Industry:Aviation
A specified clearance between the end of the valve stem and the rocker arm of an air-cooled aircraft engine equipped with solid valve lifters. The valves in one cylinder, usually cylinder number one, are adjusted to the valve-timing clearance, and the valve operating cam mechanism is adjusted so the valves in this cylinder open and close when the crankshaft is in the correct position.
After the cam mechanism is adjusted, the valves are reset to the correct cold clearance. Valve-timing clearance is also called the hot, or operating, valve clearance of the engine.
Industry:Aviation
A specified fix identifiable to a pilot by navaids or visual reference to the ground, used as a reference point in establishing and maintaining the position of an aircraft while holding.
Industry:Aviation
A specified location, identified by visual or other means, in the vicinity of which the position of an aircraft in flight is maintained in accordance with air traffic control clearances.
Industry:Aviation
A specified route designed for channeling the flow of traffic as necessary for the provision of air traffic services.
Industry:Aviation
A spin in an airplane in which the controls are ineffective in recovering to straight and level flight.
Industry:Aviation
A spline that twists, or winds, around the periphery of a shaft. Helical splines are used to change linear motion of the device that rides on the splines into rotary motion of the shaft on which the splines are cut. They are also used to change rotary motion of the shaft into linear motion of the device that rides on it.
Helical splines are cut onto the shaft of some aircraft engine starter motors to move the starter gear into mesh with the flywheel gear (linear motion) when the starter shaft is spun (rotary motion).
Industry:Aviation
