- Отрасли: 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 ...
A system of electronic navigation in which a master and a remotely located slave station transmit a signal simultaneously. The difference between the time the signals from the two stations are received in an aircraft is carefully measured and plotted on a chart of hyperbolic curves. This information gives a line of position along which the aircraft is located.
An electronic computer determines the position by plotting lines of position from two sets of stations. The aircraft is located at the latitude and longitude the lines cross.
Industry:Aviation
A system of gears that changes the speed of rotation of a shaft, but does not change its direction of rotation. The sun gear is mounted on the crankshaft and is surrounded by and meshes with a set of planetary gears mounted on a carrier, or spider, that is part of the propeller shaft. The planetary gears also mesh with and rotate inside the fixed ring gear. When the sun gear turns, the planetary gear spider rotates inside the ring gear and turns the propeller shaft at a speed slower than that of the crankshaft.
The ratio between the speeds of the crankshaft and the propeller shaft is found by dividing the sum of the teeth on the ring gear and the sun gear by the number of teeth on the sun gear. Neither the number of teeth on the planetary gears nor the number of planetary gears rotating around the sun gear enters into the computation for the gear ratio.
Industry:Aviation
A system of helicopter rotors in which there are two main rotors driven by coaxial drive shafts. The rotors turn in opposite directions so their torques counteract each other.
Industry:Aviation
A system of mathematical logic used to permit computations to be performed by binary electrical circuits.
Gates such as AND, OR, NAND, NOR, and EXCLUSIVE OR are used to make electrical models of the Boolean algebraic functions.
Industry:Aviation
A system of numbers based on eight units (zero through seven). Octal numbers are used in digital electronics to make long strings of zeros and ones more manageable. One octal digit replaces three binary digits.
Decimal Octal Binary
: 0 0 000
: 1 1 001
: 2 2 010
: 3 3 011
: 4 4 100
: 5 5 101
: 6 6 110
: 7 7 111
Industry:Aviation
A system of standardized mounting racks for electronic equipment installed in an aircraft.
Industry:Aviation
A system on a turbine engine that automatically energizes the igniters to provide a relight if the engine should flame out.
Industry:Aviation
A system or component used to remove ice from a surface. Deicers must not be confused with anti-icers, which prevent the formation of ice. Deicers remove ice after it has formed.
Industry:Aviation
A system required on all aircraft having retractable landing gear to show the pilot the position of the landing gear. The most commonly used system on modern aircraft is a series of lights. When all three wheels are down and locked, three green lights appear on the instrument panel. A red light indicates that the landing gear is in transit. It has been released by the up-locks, but it has not yet locked down.
Industry:Aviation
A system that prevents the formation of ice on an aircraft structure.
Industry:Aviation
