- 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 ...
An instrument installed in series with an electrical load to measure the amount of current flowing through the load.
Ammeters which measure very small rates of flow are called milliammeters (thousandths of an ampere) and microammeters (millionths of an ampere).
Industry:Aviation
An instrument landing system operating in the microwave spectrum which provides lateral and vertical guidance to aircraft having compatible avionics equipment.
Industry:Aviation
An instrument pack and radio transmitter dropped by parachute from an aircraft to measure conditions of the atmosphere through which it passes. This information is continuously transmitted to meteorologists on the ground.
Industry:Aviation
An instrument system which shows the transmissibility of light through the atmosphere. Transmissibility may be translated either automatically or manually into visibility and/or runway visual range (RVR).
Industry:Aviation
An instrument that can measure both volts and amperes. A switch is built into the instrument to change its function.
Industry:Aviation
An instrument that gives the pilot an indication of the rate at which an aircraft is rising or descending. A vertical-speed indicator is a pressure instrument with a calibrated restriction between the case and a pressure bellows. When the aircraft changes altitude, the pressure inside the case changes immediately. But because of the calibrated restriction, the pressure change inside the bellows lags behind the pressure change in the case.
The difference between the pressure inside and outside of the bellows causes the bellows to expand or collapse, and this change in its dimensions causes a pointer to move over its dial showing the pilot the rate of climb or descent. Vertical-speed indicators are often called rate-of-climb indicators.
Industry:Aviation
An instrument that measures electrical current in units of thousandths of an ampere.
Industry:Aviation
An instrument that measures the absolute pressure of the atmosphere by balancing the weight of the air above it against the spring action of a specially shaped evacuated metal bellows.
Industry:Aviation
An instrument that measures the angle between the local airflow around the direction detector and the fuselage reference plane.
Industry:Aviation
An instrument that measures the current flowing through a coil mounted and free to rotate within a magnetic field. The deflection of the coil is proportional to the amount of current flowing through it. Moving-coil meters are normally called D’Arsonval meters.
Industry:Aviation
