- 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 ...
One step in the overhaul of a piece of equipment. In a dimensional inspection, all the moving parts are measured with precision instruments, such as micrometer calipers, to determine if their dimensions are within the tolerances allowed by the manufacturer for the part to be serviceable.
Industry:Aviation
One type of limits included in a reciprocating engine overhaul manual. If a part measures outside of the new-parts limits, but within the serviceable limits, it will likely not wear to the point of causing engine failure within the next TBO interval.
Industry:Aviation
One-sixtieth part of a minute of angular measurement. Three hundred and sixty degrees, 21,600 minutes, or 1,296,000 seconds makes up a complete circle.
Industry:Aviation
Operating a device or a system through its entire range of actuation several times. A retractable landing gear is cycled when it is raised and lowered several times, to check its operation and to remove air from its operating fluid.
Industry:Aviation
Operations at a speed determined by circuit functions and not by any timing device.
Industry:Aviation
Operations which include simultaneous takeoffs and landings and/or simultaneous landings when a landing aircraft is able and is instructed by the controller to hold short of the intersecting runway/taxiway or designated hold-short point. Pilots are expected to promptly inform the controller if the hold-short clearance cannot be accepted.
Industry:Aviation
Opposite. If the heading of an aircraft is 270°, its reciprocal heading is 090° (the heading in the opposite direction).
The reciprocal of a number is the number one, divided by the number. The reciprocal of two is one-half, one divided by two (1 ÷ 2 or 1/2).
Industry:Aviation
Opposition to the flow of alternating current caused by capacitance and inductance in the circuit. Reactance opposes the flow of alternating current without using any power.
Reactance caused by capacitance is called capacitive reactance, its symbol is XC, and it is measured in ohms. Capacitive reactance causes the current in the circuit to lead the voltage.
Reactance caused by inductance is called inductive reactance, and its symbol is XL. Inductive reactance is also measured in ohms, and it causes the current in a circuit to lag behind the voltage.
Industry:Aviation
Opposition to the flow of alternating current caused by capacitance in the circuit. Capacitive reactance, whose symbol is XC, is measured in ohms and is determined by the capacitance in the circuit and the frequency of the AC. The formula for capacitive reactance is:
: XC = 1 / (2π f C)
: XC = Capacitive reactance in ohms
: 2π = A constant, 6.28
: f = Frequency of the AC in hertz
: C = Capacitance in farads
Industry:Aviation
Opposition to the flow of current caused by the plates of a battery. The internal resistance of a lead-acid storage battery increases as the battery becomes discharged, and current flowing through the higher resistance causes a voltage drop that lowers the closed-circuit voltage of the battery.
Industry:Aviation
