- Отрасли: 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 ...
An automatic pilot that uses a canted rate gyro, similar to that used in a turn coordinator, to sense rotation of the aircraft about its longitudinal and vertical axes. Output from the rate gyro controls a pair of servos in the aileron system that keeps the wings level and the airplane stable in roll and yaw. Two-axis automatic pilots are sometimes called wing levelers.
Industry:Aviation
An automatic switch installed in a light system to turn the lights on and off in a definite sequence. Flashers may be operated by a thermal switch, or they may have a motor that drives a selector switch.
In a thermally operated switch, the current used in the lights passes through a strip of bimetallic material and heats it. When the strip gets hot, it warps and separates the contacts, opening the circuit. Current stops flowing, and the lights go out. When the strip cools, it snaps back to its original shape and closes the contacts, and the lights turn back on.
Industry:Aviation
An automatic valve that closes off the air supply to a combustion heater if a fire or over-temperature condition occurs.
A spring-loaded, butterfly-type damper valve is installed in the air inlet duct to the heater, and it is held open by fusible links. If an over-temperature condition occurs, the links will melt, and the damper valve will shut off the air to the heater. The fire will go out.
Industry:Aviation
An auxiliary coil in an electrical relay. Current flowing through the holding coil keeps the relay energized after the control current that caused the relay to close has stopped flowing through the main coil.
Industry:Aviation
An auxiliary control on an airplane that can be lowered to increase both the lift and drag the wing produces. Wing flaps are partially lowered for takeoff to allow the airplane to leave the ground at a slow speed. They are fully lowered for landing to allow the airplane to make a steep approach without building up excessive speed.
Industry:Aviation
An auxiliary fuel pump used in an aircraft fuel system to provide fuel pressure for starting the engine, for use as an emergency backup in case the fuel pump fails, and to transfer fuel from one tank to another.
Industry:Aviation
An auxiliary member of a primary aircraft structure. Cross members are installed between the major lengthwise structural members (longerons and spars) to separate them and to carry stresses other than the primary stresses.
Industry:Aviation
An auxiliary power supply that can be connected to an aircraft to supply fluid under pressure to the hydraulic system when the engines are not operating. Mules supply hydraulic pressure to an aircraft to perform the landing gear retraction test when the aircraft is up on jacks.
Industry:Aviation
An auxiliary view of an aircraft drawing used to show the cross-sectional shape or the construction of part of a structure or component.
Industry:Aviation
An auxiliary winding in parallel with the run winding in the stator of a single-phase induction motor. The phase of the current in the start winding is different from that in the run winding. When current is flowing through both windings, a rotating magnetic field is produced which causes the rotor to turn. As soon as the rotor reaches a predetermined speed, a centrifugal switch opens the start winding, and the motor operates on the run windings alone.
Industry:Aviation
