- 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 ...
A method used for specifying the characteristics of a lubricating oil at low temperature. Oils that have been rated by this test are identified by the letter W (standing for Winter) in their designation. For example, SAE 15W50.
Industry:Aviation
A method used to assure that the control arm of a device being controlled actually reaches its full-travel stop. There are stops on both ends of an aircraft throttle control. The stop on the carburetor must be contacted first, then the throttle control is moved farther until its stop in the cockpit is reached. This additional movement stretches the control mechanism, and when the throttle control is released, it springs back a slight amount.
Technicians often refer to this type of control adjustment as “rigging in the proper cushion.” Springback assures that the stop on the carburetor is contacted before the stop in the cockpit.
Industry:Aviation
A method used to extend the range of military aircraft by refueling them in the air.
Flying tankers rendezvous (meet) with the aircraft to be refueled, and large amounts of fuel are transferred in flight.
Industry:Aviation
A method used to protect products from damage while they are being displayed for sale. The material to be shrink-wrapped is covered with a thin film of transparent thermoplastic material. Heat is applied, and the film shrinks to form a smooth protective cover.
Industry:Aviation
A method used to transmit quantitative information from a vehicle in flight to a station on the ground where this information can be used. Airplanes, missiles, rockets, and other types of complex devices are equipped with many different types of instruments that measure movement, pressure, temperature, acceleration, and strain.
The output from these instruments is coded and transmitted to flight test stations on the ground. Here it is decoded and given to the engineers in a form they can use to determine what is happening to the vehicle in flight.
Industry:Aviation
A metric unit of volume. One liter is the volume of one kilogram of pure water at a temperature of 4°C under standard atmospheric conditions. One liter is equal to 1,000 cubic centimeters, and it is the same as 1.0567 quarts in the English system of measurement.
Industry:Aviation
A microphone that is directional in its ability to pick up sounds, picking up sounds in front of it while rejecting sounds behind it.
A cardioid microphone gets its name from the Greek word kardia, which means heart. The sound pickup pattern of a cardioid microphone is roughly in the shape of a heart.
Industry:Aviation
A microphone that picks up sounds equally well from all directions around it. An omnidirectional microphone is also called a nondirectional microphone.
Industry:Aviation
A microphone used for aircraft radio transmissions in which sound pressure waves distort a piece of piezoelectric crystal.
A diaphragm in the microphone is attached to a crystal of Rochelle salt or other piezoelectric material in such a way that, when sound waves vibrate the diaphragm, it distorts the crystal.
When the crystal vibrates, it produces a voltage across two of its opposite faces that changes in exactly the same way the sound pressure changes.
Industry:Aviation
