- 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 maximum allowable condition. This term is derived from the fact that the maximum allowable condition is normally marked on an indicating instrument with a red radial line. Airspeed, engine RPM, and various engine temperatures all have specified red-line conditions.
Industry:Aviation
A maximum performance flight maneuver used in pilot training to develop skill in control and coordination.
The airplane is put into a maximum-rate climb and turned in such a way that its heading changes 180° by the time the airspeed drops off to a given value.
Industry:Aviation
A means of communications in which a graphic document is scanned and the image converted into digital data which is transmitted over telephone lines or by radio waves. At the receiving end, the data is processed in a printer, and a paper copy of the original document is produced.
Industry:Aviation
A measure of acidity or alkalinity of a solution. Solutions with pH values less than 7 are acidic. A solution with a pH of 7 is neutral, and solutions with pH values greater than 7 are alkaline.
Industry:Aviation
A measure of altitude used by aircraft flying above 18,000 feet. Flight levels are indicated by three digits representing the pressure altitude in hundreds of feet. An airplane flying at flight level 360 is flying at a pressure altitude of 36,000 feet. This is expressed as FL 360. See pressure altitude.
Industry:Aviation
A measure of angular displacement. One radian is the angle formed by the arc of a circle whose length is equal to the radius of the circle. A complete circle (360°) contains two π (6.28318) radians, and one radian is equal to 360° divided by 6.28318, or 57.2958°.
Industry:Aviation
A measure of distance used in air and sea navigation. One nautical mile is equal to the length of one minute of latitude along the earth’s equator. One nautical mile is nominally considered to be 6,080 feet, or 1,853.2 meters. However, when the United States accepted the metric system in 1959, the nautical mile was officially set as 6,076.115 feet.
Industry:Aviation
A measure of efficiency of an airfoil. L/D is the ratio of the lift to the total drag, or the coefficient of lift to the coefficient of drag at a specified angle of attack. The lift/drag ratio is commonly called the L-over-D ratio.
Industry:Aviation
A measure of electron (current) flow. One ampere is equal to a flow of one coulomb (6.28 billion billion electrons) past a point in one second.
One ampere is also the amount of current that can be forced through one ohm of resistance by a pressure of one volt.
Industry:Aviation
A measure of emitter-to-collector current gain of a transistor in a common-base amplifier circuit. Alpha of a junction transistor is never greater than one. Its output is always less than its input.
Industry:Aviation
