航空术语词典 Dictionary of Aeronautical Terms 上

时间：2011-03-11 23:11来源：蓝天飞行翻译 作者：admin 点击：次

compensating cam (turbine-engine-powered helicopter control). A cam in the engine control system of a turbine-engine-powered helicopter that coordinates the engine power with the position of the collective-pitch control stick.
compensating relief valve (reciprocating engine lubrication system component). A type of oil pressure relief valve used in some of the larger aircraft engines.
When the oil is cold, two springs hold the pressure relief valve on its seat. But when the oil warms up, a thermostatic valve directs oil against a piston in the relief valve. This oil disables one spring and allows the oil pressure to be controlled by only one spring.
The initial high oil pressure forces the thick, cold oil through the engine and assures that all the bearings are lubricated when the oil is cold.
compensating winding (electrical generator). A series winding in a compound-wound DC generator. The coils of the compensating winding are embedded in the faces of the field poles, and their magnetic fields assist the fields from the interpoles to effectively cancel the field distortion caused by armature current.
compensator port (aircraft brake master cylinder component). A small hole between a hydraulic brake master cylinder and the reservoir. The first movement of the piston in the master cylinder covers the compensating port and traps fluid between the master cylinder piston and the brake wheel cylinders to apply the brakes.
When the brake is released, the piston uncovers the compensator port, and if any fluid has been lost from the brake, the reservoir will refill the master cylinder. A restricted compensator port may cause the brakes to drag or slow their release.
complementary angles. The complement of an angle is 90° minus the angle. For example, 30° is the complement of 60°: 90° – 60° = 30°. An angle of 30° and an angle of 60° are complementary angles; their sum is 90°. The two acute angles in a right triangle are always complementary angles.

complementary colors. Two colors of light, which, when added in the proper proportion, produce white light.
complex circuit (electrical circuit). A circuit that contains a number of components, some of which are connected in series and others in parallel.
complex number (mathematics). A number which contains real numbers and imaginary numbers. See real number.
composite. Something made up of different materials combined in such a way that the characteristics of the resulting material are different from those of any of the components.
composite flight plan (air traffic control). A flight plan that specifies VFR operation on one portion of the flight and IFR operation on another.
composite propeller blade. A propeller blade made of a number of materials such as metal, graphite, glass, or aramid fibers, and foam.
composite route system (air traffic control). An organized oceanic route structure, incorporating reduced lateral spacing between routes, in which composite separation is authorized.

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