- 行业: 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 location on a structure where the cross-sectional area of the part changes drastically. Stresses concentrated at such locations are likely to cause failure. A scratch, gouge, or tool mark in the surface of a highly stressed part can change the area enough to concentrate the stresses, and it becomes a stress riser.
Industry:Aviation
A location on an aircraft identified by a number designating its distance in inches from the datum.
Industry:Aviation
A location or direction measured from an aircraft.
Astern means to the rear of, or behind. This term comes from “stern,” which is the aft, or rear part, of a ship.
Industry:Aviation
A location that can be positively identified either visually or electronically. When an aircraft flies over a checkpoint, the pilot knows his exactly location.
Industry:Aviation
A locking chamber in a cartridge starter that holds a pyrotechnic cartridge (a powder charge). The cartridge is placed in the breech, the breech is closed and locked, and the cartridge is fired. The expanding gases produced by the burning powder spin the turbine in the starter.
Industry:Aviation
A locking, solenoid-operated switch used in the feather-motor circuit for a Hydromatic propeller.
When the feathering switch button is momentarily depressed, a holding coil holds the switch closed until the feathering pump sends enough oil into the propeller dome to feather the blades. The pump continues to build up oil pressure until a cutout switch in the governor opens the circuit for the holding coil. The switch then opens the circuit and the feathering pump stops running.
Industry:Aviation
A logic device in which the logic condition (zero or one) of its single output is one only when the conditions of all of its inputs are logic one.
Industry:Aviation
A logic gate having two or more inputs and one output. An OR gate has a logic one on its output when there is a logic one on any one of its inputs. There are two kinds of OR gates: INCLUSIVE OR, and EXCLUSIVE OR. An INCLUSIVE OR gate has a logic one on its output any time one or more of its inputs are at logic one. An EXCLUSIVE OR gate has a logic one on its output when one and only one of its inputs is at logic one.
Industry:Aviation
A long punch with straight sides. A pin punch can be passed through bolt holes in a piece of equipment to temporarily hold its pieces together until they can be bolted. A pin punch can also be used to drive bolts, rivets, or pins from tight-fitting holes.
Industry:Aviation
A long trail of visible moisture left by an airplane as it flies at high altitude through very cold air. Vapor trails are caused by the condensation of water vapor in the exhaust gases leaving the engines. Vapor trails look like long, thin clouds, and they are often called contrails (condensation trails).
Industry:Aviation
