- 産業: 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 measure of the force of gravity acting upon a body. Weight and mass are often used interchangeably, but they are not the same thing. Mass is the amount of material in a body and does not consider the effect of gravity acting on it. Weight does take into consideration the effect of gravity acting on the mass.
Industry:Aviation
A measure of the force of gravity. One G-unit is the force acting on an object caused by the gravitational pull of the earth. High-performance aircraft have an instrument called an accelerometer to show the pilot the number of G-units acting on the aircraft during any flight maneuver.
Industry:Aviation
A measure of the fuel efficiency of a turbojet or turbofan engine. TSFC is the number of pounds of fuel burned per hour for each pound of thrust produced.
Industry:Aviation
A measure of the intensity of heat, or the hotness or coldness of a body or material. Temperature is measured on one of four scales: Celsius, Fahrenheit, Kelvin, and Rankine. The three reference points used to measure temperature are:
# Absolute zero, the point at which all molecular activity stops:
All molecular activity stops at 0°K, 0°R, –273°C, and –460°F.
# The point at which pure water changes from a liquid into a solid (freezes):
Water freezes at 0°C, 32°F, 273°K, and 492° R.
# The point at which pure water changes from a liquid into a gas (boils):
Water boils at 100°C, 212°F, 373°K, and 672°R.
Industry:Aviation
A measure of the length of time the phosphor dot on the surface of a cathode-ray tube will glow after the beam of electrons passes on. A long-persistence tube leaves a definite trace of the pattern of the beam after the beam has moved on. In a short-persistence tube, the electron beam leaves very little trace of its passage.
Industry:Aviation
A measure of the loss of strength of a material caused by the presence of a notch, or V-shaped cut.
Industry:Aviation
A measure of the power produced by a turboprop engine. ESHP is the sum of the shaft horsepower delivered to the propeller and the thrust horsepower produced by the exhaust gas. The approximate amount of thrust horsepower can be found by dividing the static thrust by
2.6.
Industry:Aviation
A measure of the rate of decay of radioactive material. In one half-life, the material decays, or loses one half of its radioactivity. In the next half-life interval, the material loses one half of that which is left. The half-life of various types of radioactive materials varies from a few microseconds (millionths of a second) up to billions of years.
Industry:Aviation
A measure of the sensitivity of a voltmeter, found by dividing one by the amount of current (in amperes) needed to deflect the pointer of the meter full scale.
For example, a meter that requires one milliamp (0.001 amp) of current for full-scale pointer deflection has a sensitivity of 1,000 ohms per volt.
The greater the ohms-per-volt, the more sensitive the meter.
Industry:Aviation
