- 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 ...
An optoelectronic device that emits visible light when electrons pass through it. P and N impurities are mixed with such chemical compounds as indium phosphide, gallium arsenide, and zinc selenide to form a P-N junction.
When the P-N junction is reverse-biased (the negative terminal of the voltage source is connected to the P-material), no electrons flow, and the LED remains dark. But when the diode is forward-biased (the negative terminal of the voltage source connected to the N-material), electrons flow through the LED, and it emits light.
Industry:Aviation
An optoelectronic device that interrupts a beam of light being shone on a photoelectric cell. The chopper changes the steady DC output of the photoelectric cell into pulsating DC that can be easily amplified.
Industry:Aviation
An optoelectronic device used to couple electronic circuits by using electromagnetic radiation, either visible or invisible. The input circuit contains some form of light source, usually a light-emitting diode (LED). The intensity of the light is determined by the amount of current flowing in the input circuit.
The output circuit contains a photodiode, phototransistor, or light-dependent resistor. The light source and light sensor are mounted in a light-tight housing, so the light emitted by the source striking the sensor controls the output of the coupled circuit.
Industry:Aviation
An organic compound which contains only carbon and hydrogen. The vast majority of fossil fuels such as gasoline and turbine-engine fuel are hydrocarbons.
Industry:Aviation
An organization or person involved in the business of transporting people or cargo by air for compensation or hire.
Industry:Aviation
An organization which sets various standards, called ASTM standards, used in the aircraft industry.
Industry:Aviation
An organized oceanic route structure, incorporating reduced lateral spacing between routes, in which composite separation is authorized.
Industry:Aviation
An orifice installed in a fluid flow system to decrease the amount of fluid allowed to flow under a specific amount of pressure.
Industry:Aviation
An orifice, or hole, having a specific diameter, length, and approach and departure angles. A calibrated orifice is used to control the amount of fluid that can flow under a specific pressure. Carburetor metering jets are calibrated orifices.
Industry:Aviation
