- Отрасли: Aviation
- Number of terms: 16387
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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 frequency of the ripple in the output of a rectifier circuit. In a full-wave rectifier, the ripple frequency is twice the frequency of the alternating current. In a half-wave rectifier, the ripple frequency is the same as that of the AC.
Industry:Aviation
The frequency of vibration produced when two sources of vibration act on a common body. The beat frequency is the difference between the frequencies of the two original vibrations.
Industry:Aviation
The frozen calculated landing time of a flight. ACLT is an actual time determined at freeze calculated landing time (FCLT) or meter list display interval (MLDI) for the adapted vertex for each arrival aircraft, based on runway configuration, airport acceptance rate, airport arrival delay period, and other metered arrival aircraft.
ACLT is either the vertex time of arrival (VTA) of the aircraft, the tentative calculated landing time, or the actual calculated landing time (TCLT/ACLT) of the previous aircraft plus the arrival aircraft interval (AAI), whichever is later. ACLT will not be updated in response to the aircraft’s progress.
Industry:Aviation
The fuel metering device for a gas turbine engine that senses the variables of power lever position, pressure, speed, and temperature in the engine. The fuel control unit then meters the correct amount of fuel to be sent to the burners for the existing conditions.
Industry:Aviation
The fuel-air mixture ratio produced by a fuel metering system during the time the engine is transitioning from its idle RPM to a speed at which fuel is metered through the main metering system.
Industry:Aviation
The fuel-air mixture ratio used by an aircraft engine while it is operating at its idle speed. The uneven distribution of the fuel-air mixture to the cylinders at idle speed requires the idle mixture ratio to be richer than that required for best burning.
Industry:Aviation
The fuel-air mixture ratio used in a reciprocating engine that allows the engine to develop its greatest amount of power.
The best-power fuel-air mixture ratio, which is in the range of 0.074 to 0.087 (13.5:1 to 11.5:1 air-fuel ratio), is richer than the ratio used for the best economy. The additional fuel in this mixture is used to remove some of the heat from the cylinders when the engine is producing its best power.
Industry:Aviation
The fuel-air mixture ratio used in a reciprocating engine that gives the aircraft its greatest range of flight.
The best-economy fuel-air mixture ratio, which is in the range of 0.055 to 0.065 (18:1 to 15:1 air-fuel ratio). This mixture ratio does not provide any additional fuel for cooling, so it can be used only when the engine is operating with reduced power.
Industry:Aviation
The full system of automatic flight control which includes the autopilot, flight director, horizontal situation indicator, air data sensors, and other avionics inputs.
An aircraft with an AFCS can be flown in a completely automatic mode.
“Affirmative” (air traffic control). The term used by ATC for “yes.”
Industry:Aviation
The function of an approach control facility that provides air traffic control service for departing IFR and, under certain conditions, VFR aircraft.
Industry:Aviation
