- 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 head of a rivet that was formed when the rivet was manufactured. The head formed when the rivet is driven is called the shop head. Rivets used in aircraft construction have several different shapes of manufactured heads. The most common are: the universal head (MS20470), the 100° countersunk head (MS20426), the round head (AN 430), and the flat head (AN 442).
Industry:Aviation
The heading of an aircraft along any of the four cardinal directions shown on a compass. The cardinal directions are North, East, South, and West.
Industry:Aviation
The heater in an electron tube. The filament is a small piece of flat resistance wire mounted inside a tube-like cathode.
Electrons flowing through the filament cause it to glow red-hot, and this heats the cathode. The heat speeds up the molecular movement in the cathode enough that electrons are emitted from its surface. Electron tube filaments are heated with low-voltage AC or with low-voltage batteries.
Industry:Aviation
The height above a designated helicopter landing area used for helicopter instrument approach procedures.
Industry:Aviation
The height at which a rising parcel or layer of air would become saturated if it were lifted adiabatically — lifted with heat neither added to it nor taken from it.
Industry:Aviation
The height of an object expressed in units of distance above a reference plane, usually above mean sea level (MSL) or above ground (AGL).
Industry:Aviation
The height of the minimum descent altitude above the published airport elevation. HAA is published in conjunction with circling minimums.
Industry:Aviation
The highest altitude at which an aircraft can maintain a steady rate of climb of 100 feet per minute.
Industry:Aviation
The highest angle of attack at which air passes over an airfoil in a smooth flow. At angles of attack greater than the critical angle, the air burbles, or flows in a disturbed pattern, and lift is lost.
The critical angle of attack is sometimes called the stalling angle of attack.
Industry:Aviation
