- 産業: 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 form of electric arc welding in which a bare rod is used as the electrode. The rod is covered with granulated flux that melts in the arc and flows out ahead of the weld to prevent the formation of oxides in the bead.
Industry:Aviation
A form of electric arc welding in which the arc is formed inside a shield of inert gas, such as argon or helium.
The inert gas drives all the oxygen away from the arc and prevents oxides from forming in the molten metal.
Industry:Aviation
A form of electric arc welding in which the electrode is a nonconsumable tungsten wire. TIG welding is now called GTA (gas tungsten arc) welding.
Industry:Aviation
A form of electric arc welding in which the electrode is an expendable wire. MIG welding is now called GMA (gas metal arc) welding.
Industry:Aviation
A form of electric lamp in which a white-hot, incandescent filament produces light.
The filament is enclosed in a glass bulb from which all the air has been removed and replaced with an inert gas, such as argon. The inert gas replaces oxygen so the filament does not burn up when it becomes white-hot. Incandescent lamps produce a large amount of heat as well as light.
Industry:Aviation
A form of electric welding in which the intense heat needed to melt the metal is produced by an electric arc.
Industry:Aviation
A form of electrical circuit that changes alternating current into pulsating direct current. One rectifier, either a semiconductor diode or a diode electron tube, is used to block the flow of one half of the AC wave while allowing the other half to pass through. Half-wave rectifiers are inefficient and do not produce smooth direct current. However, they are used where economy of components is important and pulsations in the output are of no concern.
Industry:Aviation
A form of electrical generator in which the field coils are connected in series with the armature. Series-wound generators are not commonly used to supply power for aircraft electrical systems because of the difficulty in controlling the output voltage.
Industry:Aviation
A form of electrical rectifier that operates on the principle that electrons can flow from a base metal through a film of oxide, but cannot flow through the oxide into the base metal. Copper oxide and selenium oxide rectifiers have both been used in the past, but they have been replaced, to a great extent, by silicon or germanium semiconductor diode rectifiers.
Industry:Aviation
A form of electrical resistance welding in which small metal wheels are used as the electrodes. These wheels roll over the metal, and the current is conducted through the metal from the wheel on one side to the wheel on the other side. Heat caused by the current flowing through the resistance of the metal softens the metal, and pressure between the wheels forces the softened metal in the two pieces to flow together.
Seam welding is similar to spot welding, except that the weld is a continuous line, rather than individual spots. Fuel tanks are usually seam welded, rather than spot welded.
Industry:Aviation
