- 行业: 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 difference in electrical pressure. A potential difference exists when one component, or point, has an excess of electrons (a negative charge) and another has a deficiency of electrons (a positive charge). Potential difference is measured in volts.
Industry:Aviation
A differential air pressure gage which measures the difference between ram, or impact, air pressure and the local static air pressure. The dial of an airspeed indicator is calibrated to convert this differential air pressure into units of knots, miles per hour, or kilometers per hour.
Industry:Aviation
A digital building block having two stable states, used to store information. A flip-flop is made of two cross-coupled NAND or NOR gates that act as a latch. The output of each gate is applied to the input of the other.
Industry:Aviation
A digital building block that changes the logic state of its output each time a clock pulse is received.
Industry:Aviation
A digital control system. Numerical control (digital control) is used with production machine tools to machine complex parts with more precision than can be done with an analog control system.
Industry:Aviation
A digital electronic component that has one input and one output, with the output having the same condition as the input. A buffer is used to isolate an input or strengthen a signal.
Industry:Aviation
A digital electronic device that contains a central processing unit (CPU), an input, an output, and some memory units. Digital computers are used to process numbers or words and to control many different types of electrical and mechanical devices.
Industry:Aviation
A digital electronic fuel control for a gas turbine engine that functions during all engine operations, hence “full-authority.” It includes the electronic engine control, functions with the flight management computer, and schedules the fuel to the nozzles in such a way that prevents overshooting of power changes and over-temperature conditions.
FADEC furnishes information to the engine instrument and crew alerting system.
Industry:Aviation
A digital logic device having two or more inputs and only one output. There is a logic high on the output when one and only one input has a logic high.
Industry:Aviation
A digital logic device used as a switch in an integrated circuit chip. When there is a logic low on the control line, the device acts as a closed switch with the in and out lines connected, a low on the in line produces a low on the out line, and a high on the in line produces a high on the out line. When there is a high on the control line, the device acts as an open switch, placing a high impedance between the in and the out lines.
Industry:Aviation
