- 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 ...
The lowest speed at which an engine operates smoothly when it is not carrying any type of mechanical load. Idle speed is measured in revolutions per minute (RPM).
Industry:Aviation
The lowest temperature at which a material will pour without assistance.
Industry:Aviation
The lowest temperature at which a petroleum product in an open container will continue to burn when it is ignited by an open flame held near its surface.
Industry:Aviation
The lowest temperature at which the fumes of a volatile liquid (a liquid that evaporates easily) will ignite and continue to burn when a small flame is passed above its surface.
Industry:Aviation
The low-frequency radio range which was one of the first practical radio navigational aids.
Two antennas, arranged so they are at approximately right angles to each other, radiate low-frequency signals in the form of two figure eights. One antenna transmits the Morse code letter A (. –), and the other transmits the letter N (– .).
A pilot flying an airplane in the area where the two signals overlap hears a solid tone. As the airplane moves to one side or the other, the letter A or N predominates, and this indicates to the pilot the side to which he has moved.
The area of overlapping signals, usually about three degrees wide, is called the “beam.”
Industry:Aviation
The Mach number of any isolated, or localized, flow of air over an aircraft structure. Because of the shape of the aircraft structure, the local Mach number is often higher than the flight Mach number of the aircraft. Shock waves normally form on an aircraft structure when the air passing over the structure reaches a speed of Mach one, the speed of sound.
Industry:Aviation
The magnetic field surrounding a current-carrying conductor. The strength of the field is determined by the amount of current flowing in the conductor.
Industry:Aviation
The magnetic flux left in a piece of iron or steel after the magnetizing force is reduced to zero. Soft iron can hold very little residual magnetic flux, but hard steel and certain alloys hold a large amount of residual magnetic flux.
Industry:Aviation
The magnetic lines of flux that leave the north magnetic pole and travel over the surface of the earth and re-enter it at the south magnetic pole.
Industry:Aviation
The magnetism that remains in the field frame of a generator when no current is flowing in the field coils. It is residual magnetism that produces the initial current when a generator begins to turn. As soon as the current produced by the residual magnetism begins to flow in the field coils, the field strength increases and more current is produced.
Industry:Aviation
