- 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 intended direction of flight, measured in the horizontal plane in degrees clockwise from north.
Industry:Aviation
The intensity at which sound begins to cause pain. A sound intensity of 150 decibels which is often produced near an operating jet engine is normally considered to be the threshold of pain.
Industry:Aviation
The international call for help, used with voice radio transmission. The term “mayday” comes from the French word m’aidez (help me), pronounced “mayday” in English. Mayday is used in voice transmission in the same way the letters SOS are used in code transmission.
Industry:Aviation
The international radio-telephony urgency signal. When repeated three times, pan-pan indicates uncertainty or alert, followed by the nature of the urgency.
Industry:Aviation
The intersection of lines of reference, usually expressed in degrees/minutes/seconds of latitude and longitude, used to determine a position or location.
Industry:Aviation
The intersection of two mold lines of a part. Mold line dimensions are made between mold points.
Industry:Aviation
The intervals of incomplete darkness following sunset and just preceding sunrise. The time at which evening twilight ends and morning twilight begins is determined by arbitrary convention.
Industry:Aviation
The inverse of the cube of a number. The inverse of a number is one, divided by the number. The cube root of 27 ( is 3. This is the same as 27 raised to the 1/3 power.
Industry:Aviation
The invisible, but measurable, force surrounding a permanent magnet or current-carrying conductor. This field is produced when the orbital axes of the electrons of the atoms in the material are all in alignment.
When a piece of iron or steel is held in the magnetic field, it is pulled toward the magnet, and when a conductor passes through a magnetic field, current is induced into it.
Industry:Aviation
The knocking sound made in a reciprocating engine by detonation that follows preignition. Preignition occurs when incandescent (red-hot) carbon particles inside the cylinder ignite the fuel-air mixture before the engine is ready for ignition to occur.
Early ignition allows the cylinder pressure and temperature to build up high enough to cause the fuel to detonate, or explode, rather than burn smoothly as it should. It is this explosion that causes the sound we hear.
Industry:Aviation
