時間：2011-03-11 23:11來源：藍天飛行翻譯 作者：admin 點擊：次
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automatic gain control (electronic circuit). An electronic circuit within a radio receiver that keeps the output volume relatively constant, even though the strength of the signal picked up by the receiver changes. automatic intake valve (reciprocating engine component). An intake valve that is opened by the low pressure created inside the cylinder as the piston moves down. There is no mechanical means of opening it. automatic mixture control (aircraft fuel metering system component). See AMC. automatic pilot. An automatic flight control device that controls an aircraft about one or more of its three axes. The primary purpose of an autopilot is to relieve the pilot of the control of the aircraft during long periods of flight. Automatic pilots may be directed by the human pilot, or they may be coupled to a radio navigation signal. automatic pilot controller. The component in an automatic pilot system that allows the human pilot to direct the aircraft to hold a specified heading and/or altitude or to couple to one or more of the navigation radios for cruise flight or for a landing approach. Other controls allow the pilot to command a turn, and to trim the aircraft about any of its three axes. automatic-reset circuit breaker. A thermally actuated electrical circuit protection device installed in some electric motors that opens the power circuit when the motor overheats and automatically closes to restore the circuit when the motor cools down. Automatic-reset circuit breakers are not approved for use in aircraft electrical systems. automatic terminal information service. See ATIS. |
