时间：2011-03-11 23:11来源：蓝天飞行翻译 作者：admin 点击：次
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amphibian aircraft. An aircraft with a landing gear that allows it to operate from either water or land surfaces. amphibious floats. Floats which may be attached to an aircraft to allow it to operate from either land or water. Retractable wheels mounted inside the floats can be extended for operation on land. amplification (electrical characteristic). The increase in either voltage or current that takes place in a device or an electrical circuit. Amplification is normally measured as a ratio of the output quantity to the input quantity. amplification factor. The ratio of the amplitude of the output of an electrical or electronic circuit, to the amplitude of its input. amplifier. An electronic circuit in which a small change in voltage or current at its input controls a much larger change in voltage or current at its output. amplitude. The amount a value changes from its at-rest, or normal, condition to its maximum condition. amplitude modulation. See AM. AMS (Aeronautical Materials Specifications). Materials and process specifications for aircraft components which conform to established engineering and metallurgical practices in the aircraft industries. AMT (Aviation Maintenance Technician). A classification of aviation maintenance personnel certification included in the proposed 14 CFR Part 66 (Aviation Maintenance Personnel). AMT certification indicates that the holder is authorized to perform certain maintenance and inspection functions on airframes and powerplants certificated in the United States. An AMT certificate with an Aircraft rating replaces the Mechanic certificate with Airframe and Powerplant ratings issued under 14 CFR Part 65 (Airmen Other Than Flight Crewmembers). AMT(T) (Aviation Maintenance Technician (Transport)). A classification of aviation maintenance personnel certification included in the proposed 14 CFR Part 66 (Aviation Maintenance Personnel). AMT(T) certification indicates that the holder is authorized to perform certain maintenance and inspection functions on transport category aircraft in the United States. anaerobic resin. A single-component polyester resin that hardens when all air is excluded from it. AN aeronautical standard drawings. Dimensional standards for aircraft fasteners developed by the Aeronautical Standards Group. Part numbers for the fasteners described in these drawings carry the prefix AN. analog. A physical variable that keeps a fixed relationship with another variable as it changes. For example, the position of the hands of a clock keeps a fixed relationship with time. It is because of this relationship that we can tell the time of day by knowing the positions of the clock hands. The position of the clock hands is an analog of time. analog computer. An electronic computer which operates by converting different levels of voltage or current into numerical values in the decimal number system. One level of voltage (or current) represents the number one, another level represents two, and so on. Adding or subtracting the voltages (or currents) which are analogs of the numbers produces a voltage (or current) which is the electrical equivalent of the sum or the difference of the numbers. |
