- 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 sheet metal jacket surrounding part of the engine exhaust system.
Air from inside the engine nacelle or compartment flows between this jacket and the exhaust system component and picks up heat. The heated air is carried through a carburetor heater valve, and when carburetor air temperature is low, can be directed into the carburetor; otherwise it is dumped overboard. Air that flows through the carburetor air heater is not filtered.
Industry:Aviation
A sheet metal layout tool that looks much like a drafting compass. Dividers are used to lay out circles or arcs of a circle and to divide a line into equal spaces.
Industry:Aviation
A sheet of aluminum alloy which has a coating of pure aluminum rolled on one or both of its sides.
Aluminum alloys corrode easily, but pure aluminum does not. By rolling a thin coating of pure aluminum onto the surface of an alloy sheet, the high strength of the alloy and the corrosion resistance of pure aluminum may be combined. Because the pure aluminum coating is weaker than the alloy sheet, cladding slightly reduces the strength of the material.
Industry:Aviation
A sheet-metal cover placed over an air-cooled engine to pick up and force cooling air through the cylinder fins to remove heat from the engine.
Industry:Aviation
A sheet-metal-working tool. A nibbler uses a reciprocating punch to remove metal as it moves back and forth. The punch takes away only a small bite of metal each stroke.
Industry:Aviation
A shielded aircraft spark plug with a built-in carbon resistor between its terminal end and center electrode. Shielded ignition leads have a metal braid around the insulator, and this braid, with the insulator and conductor, acts as a capacitor and stores electrical energy.
When the spark jumps the gap in the spark plug, the energy stored in the lead capacity causes the spark to continue after the fuel is ignited. This prolonged spark needlessly wears away the spark plug electrodes. The built-in resistor causes enough opposition to this current to reduce the spark duration and increase the life of the spark plug electrodes.
Industry:Aviation
A shock absorbing mechanism installed between a helicopter rotor blade and the hub to dampen lead- and lag-vibrations of the blade.
Industry:Aviation
A shock wave that forms ahead of a blunt object moving through the air at the speed of sound. The shock wave is perpendicular (normal) to the air approaching the object. Air passing through a normal shock wave is slowed to a subsonic speed, and its static pressure is increased.
Industry:Aviation
A shock wave that forms on a sharp-pointed object moving through the air at a speed greater than the speed of sound. Air passing through an oblique shock wave is slowed down, but not to a subsonic speed, and its static pressure is increased.
Industry:Aviation
