- 업종: 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 measurement of the friction characteristics of the runway pavement surface, using continuous self-watering friction measurement equipment in accordance with the specifications, procedures, and schedules contained in AC 150/5320-12, Measurement, Construction, and Maintenance of Skid-Resistance Airport Pavement Surfaces.
Industry:Aviation
A measurement related to torque that concerns to the ease or difficulty of starting or stopping the rotation of an object. The moment of inertia of an object is the sum of all the masses making up the object multiplied by the square of the distance of each mass from the axis of rotation.
MI = mr2 / 4
MI = Moment of Inertia
m = mass of object
r = radius of object from axis of rotation
Industry:Aviation
A measurement used in sheet metal layout. Setback is the distance the jaws of a brake must be set back from the mold line to form a bend. Setback for a 90° bend is equal to the inside radius of the bend, plus the thickness of the metal being bent. For a bend of other than 90°, a factor called a K-factor must be used.
Industry:Aviation
A measurement used to describe the size of an object. The basic dimensions of an object are its L (length), W (width), and H (height).
Industry:Aviation
A measuring device having two inwardly curved, hinged legs. The calipers are closed until the points of the legs just touch the outside of the device to be measured, and the distance between the two points is measured with a steel scale.
“Over” (air traffic control). A term used in air traffic control to indicate “My transmission is ended; I expect a response.”
Industry:Aviation
A mechanic’s hand tool which has a box-socket wrench on one end and an open-end wrench on the other. Both ends normally fit the same size nut or bolt.
Industry:Aviation
A mechanical calculating device consisting of two side-by-side logarithmically graduated scales. The graduations are spaced according to the logarithm of the number, rather than the number itself. Two numbers are multiplied by adding the lengths of the logarithmic scales representing the numbers.
Slide rules, which are available in both straight and circular forms, are used to make fast calculations involving multiplication and division and the use of logarithms and trigonometric functions. Mechanical slide rules have been almost totally replaced by electronic calculators that can work all of the problems a slide rule can work, as well as many other types, much faster and with a far greater degree of accuracy.
Industry:Aviation
A mechanical device that limits the amount the blades of a helicopter rotor can droop when the rotor is turning at a slow speed, and there is not enough centrifugal force to overcome the effect of gravity on the blades.
Industry:Aviation
A mechanical drawing used to show a symmetrical object. The center line of the object is shown, and break lines indicate that only one half of the object is shown.
Industry:Aviation
