- 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 included angle formed between the sides of the head of a countersunk rivet or screw.
Industry:Aviation
The increase in either voltage or current that takes place in a device or an electrical circuit. Amplification is normally measured as a ratio of the output quantity to the input quantity.
Industry:Aviation
The increase in force or speed produced by a mechanical device, such as the lever, pulley, gears, or hydraulic cylinder. These devices increase speed or force, but they cannot produce work. The force needed to lift a weight may be reduced, or the speed at which an object moves may be changed. But if mechanical losses are discounted, the amount of work (force times distance) taken from the device is the same as the amount of work put into it.
Industry:Aviation
The indication on a helicopter tachometer that shows the rotor clutch is not fully engaged. A helicopter tachometer has two needles; one shows the speed of the engine and the other, the speed of the main rotor. When the clutch is fully engaged and the rotor is coupled to the engine, the needles are “married”—one is directly on top of the other.
When the engine is started and the rotor is coming up to speed, the engine RPM needle is ahead of the rotor RPM needle. When the engine is throttled back, and the rotor freewheels, the rotor needle is ahead of the engine needle. In either case, the needles are said to be split.
Industry:Aviation
The initial voice contact between a facility and an aircraft. The call-up should include the identification of the facility being called and the facility initiating the call.
Industry:Aviation
The inner section of a compressor wheel that makes up a stage of compression in an axial-flow compressor. The disk mounts on the compressor shaft, and the rotor blades mount around the periphery of the disk. There is one compressor disk for each stage of compression.
Industry:Aviation
The insulated block in a high-voltage magneto distributor to which the ignition leads attach. The distributor rotor passes near fixed contacts inside the distributor block, and the high-voltage current jumps from the rotor to the contact, then out the correct ignition lead to the spark plug. Distributor blocks are made of a plastic material having an extremely high dielectric strength.
Industry:Aviation
