时间：2014-04-25 17:29来源：蓝天飞行翻译 作者：航空 点击：次
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VR Rotation speed – Speed at which rotation is initiated during take-off. VREF Approach speed – The landing reference speed at a height of 50 feet above the runway threshold in the normal landing configuration. VS Stalling speed. ISA International standard atmospheric conditions. OAT Outside air temperature – The free air temperature, obtained either from in-flight temperature indications or ground meteorological sources. SAT Static air temperature (In-flight, SAT = OAT). TAT Total air temperature – Static air temperature plus adiabatic compression (ram) rise. Take-off Distance The take-off distance on dry runways is the longer of (1) and (2), defined as follows: The take-off distance on wet and contaminated runways is the longer of (3) or the take-off distance on dry runways as established from (1) or (2). (1) The distance from the start of the take-off roll to the point where the airplane attains a height of 35 feet above the take-off surface, with a failure of the critical engine at VEF. (2) 115% of the distance from the start of the take-off roll to the point where the airplane attains a height of 35 feet above the take-off surface, with all engines operating. (3) The distance from the start of the take-off roll to the point where the airplane attains a height of 15 feet above the take-off surface, with a failure of an engine at VEF. |
