- 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 device in a hydraulic system that automatically shuts off the flow of fluid if a line should break. There are two types of hydraulic fuses: one type shuts off the flow after a given volume of fluid flows, and the other type shuts off the flow any time the rate of flow becomes excessive.
Industry:Aviation
A device in a hydraulically boosted aircraft control system that cushions the movement of a control at the end of its travel.
Industry:Aviation
A device in a spring tab to which the control horn is attached. For normal operation, the torsion rod acts as a fixed attachment point, but when the control surface loads are high, the torsion rod twists and allows the control horn to deflect the spring tab.
Industry:Aviation
A device in an aircraft landing gear that absorbs the shock which occurs when an aircraft touches down on landing. The most commonly used shock absorber is the oleo (oil and air) shock strut. The initial landing impact is taken up by oil transferring from one chamber inside the shock absorber to another through a metering orifice. The much smaller shocks that occur when the aircraft is taxiing are taken up by a cushion of compressed air.
Industry:Aviation
A device in an alternator or generator control system that reduces the output voltage when excessive current flows.
Industry:Aviation
A device in the control system of a DC generator which reduces the output voltage or removes the generator from the electrical system any time it produces more than its rated current.
Some current limiters are a type of slow-blow fuse in the generator output circuit which removes the generator from the electrical system if its output becomes excessive. Other current limiters reduce the generator output voltage if it tries to put out more than its rated current.
Industry:Aviation
A device in the control system of an aircraft that allows the automatic pilot to move the control surfaces.
The capstan is a grooved drum-like wheel mounted on the automatic pilot servo motor. A bridle of control cable is wound around the capstan, and the ends of the bridle are attached to the aileron, elevator, or rudder control cable. When the servo motor turns, it winds the bridle around the capstan, and the bridle moves the main control cable.
Industry:Aviation
A device in the exhaust system of a turbojet or turbofan engine, used to increase the thrust for takeoff and for special flight conditions.
Since much of the air passing through a gas turbine engine is used only for cooling, it still contains a great deal of oxygen. Fuel is sprayed into the hot, oxygen-rich exhaust in the afterburner, where it burns and produces additional thrust.
Afterburners, called reheaters in the United Kingdom, use a large amount of fuel, but the extra thrust they produce makes them efficient for high-performance aircraft.
Industry:Aviation
A device in the fuel line between the engine-driven fuel pump and the carburetor that measures the rate of flow of the fuel. The flowmeter transmitter converts the flow rate into an electrical signal and sends it to an indicator in the instrument panel.
Industry:Aviation
A device in the ignition system of a reciprocating engine that produces the spark which ignites the fuel-air mixture inside the cylinder. A spark plug has a steel shell and an insulated center electrode. Accurately spaced gaps are formed between the ground electrodes on the shell and the insulated center electrode.
The high-voltage lead from the ignition distributor is connected to the insulated terminal of the spark plug and, at the correct time, a pulse of high-voltage electrical energy is sent to the spark plug. As this electrical energy passes to ground, it produces an intense spark between the two electrodes.
Industry:Aviation
