- Отрасли: Aviation
- Number of terms: 16387
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- 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 ...
An alternating current circuit containing both inductance (L) and capacitance (C). An LC circuit is considered to have no resistance.
In a purely capacitive circuit, changes in current lead changes in voltage by 90°. In a purely inductive circuit, current changes lag 90° behind voltage changes. Because the effects of capacitance and inductance are 180° apart, the total opposition to the flow of current in an LC circuit is the difference between the capacitive and the inductive reactances.
Industry:Aviation
An alternating current circuit containing inductance (L) and resistance (R). The total opposition to the current in an LR circuit is impedance (Z), which is the vector sum of the inductive reactance and the resistance.
Industry:Aviation
An alternating current circuit containing inductance (L), capacitance (C), and resistance (R). The total opposition to the flow of current in an LCR circuit is the circuit impedance (Z), which is the vector sum of the total reactance (the difference between the inductive and the capacitive reactances), and the resistance.
Industry:Aviation
An alternating current circuit in which the inductive reactance is greater than the capacitive reactance. Changes in the current flowing in an inductive circuit lag behind changes in the voltage.
Industry:Aviation
An alternating current motor similar to an induction motor, except the rotor is either a permanent magnet or an electromagnet excited by an external source of direct current. The rotor of a synchronous motor turns at a speed directly related to the frequency of the alternating current used to excite its stator.
Industry:Aviation
An altitude depicted on an Instrument Approach Procedure Chart requiring the aircraft to maintain altitude at the depicted value.
Industry:Aviation
An altitude or altitudes stated in the order flown, which are to be maintained until reaching a specific point or time. Altitude restrictions may be issued by ATC (air traffic control) because of traffic, terrain, or other considerations.
“Altitude restrictions are canceled.” (air traffic control directive). A statement meaning that adherence to previously imposed altitude restriction is no longer required during a climb or descent.
Industry:Aviation
An altitude or flight level maintained during en route level flight.
Industry:Aviation
An ammeter in a light aircraft electrical system located between the battery and the main bus. This ammeter shows the current flowing into or out of the battery.
Industry:Aviation
An ammeter used for measuring high-frequency alternating current. The current flows through a fine wire held under a slight tension, and the heat produced by the current causes the wire to expand and increase its length. As the wire lengthens, it moves a pointer across the dial to show the amount of current flowing through the wire.
Industry:Aviation
