時間：2011-03-11 23:13來源：藍天飛行翻譯 作者：admin 點擊：次
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flat-compounded generator. A compound-wound generator (a generator that has both a series and a parallel, or shunt, winding) in which the effect of the two fields are balanced so they hold the output voltage constant from a no-load condition to the maximum load the generator can produce. See overcompounded generator and undercompounded generator. flat file (metal-cutting hand tool). A common type of file used to smooth the edges or surface of a piece of metal or hard plastic. A flat file is tapered toward the tip in width and slightly tapered in thickness. It has two sets of teeth arranged diagonally across the surface in opposite directions (double cut), on both sides and a single row of teeth along both edges. flat grain wood. Wood that has been sawed in such a way that the annual rings form an angle of less than 45° to the face of the piece. flathead pin. A high-strength steel pin with a flat head on one end and a hole for a cotter pin on the other end. A flathead pin, called a clevis pin, is used to connect a clevis to an eyebolt or control horn. flathead rivet. An AN442 rivet used on the inside of an aircraft structure where it is not exposed to the airflow. Flathead rivets are often used because they are easy to install with automatic riveting machines. flat lacquer (finishing material). A type of lacquer that dries with a flat, or nonglossy, surface. Flat lacquer is used for painting instrument panels and any part of an aircraft that must not reflect light. flat-rated engine. A turboprop engine whose allowable output power is less than the engine is physically capable of producing. Below a specific density altitude, the engine is limited by the amount of torque the airframe can tolerate. Above this altitude, the engine is limited by the exhaust gas temperature. |
