Wind shear modeling for aircraft hazard definition
Wind shear modeling for aircraft hazard definition
复制标题
用于飞机危险定义的风切变建模
DOI：
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发表时间：
1978
期刊：
影响因子：
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通讯作者：
S. T. Wang
中科院分区：
文献类型：
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作者：
W. Frost;D. Camp;S. T. Wang
翻译后摘要：在终端区的低空风切变已被确定为危险的飞机运行。已经开发了风廓线的数学模型，用于旨在确定和消除这些风切变危害的快速时间和载人飞行模拟研究。一组风廓线和相关的风切变特性的稳定和中性边界层，雷暴，和锋面风潜在的飞机在终端区。风切变被定义为风速和/或风向的显著变化，最高可达地面以上500米，可能对飞机的进场、着陆或起飞产生不利影响。直接危险性分析的风切变工程模型以数学公式、图形、表格和计算机查找程序的形式提出。用于建立模型的风廓线数据描述为位置，如何获得，观测时间和数据点的数量高达500米。这些模型提供了二维垂直平面中风速的三个分量，即，作为垂直和水平坐标的函数。如有统计数据，则提供关于超过模型预测的风切变环境的风险的数据。
Abstract : Wind shear at low altitudes in the terminal area has been identified as hazardous to aircraft operations. Mathematical models of wind profiles have been developed for use in fast time and manned flight simulation studies aimed at defining and eliminating these wind shear hazards. A set of wind profiles and associated wind shear characteristics for stable and neutral boundary layers, thunderstorms, and frontal winds potentially encounterable by aircraft in the terminal area are given. Wind shear is defined as significant changes in wind speed and/or direction up to 500 m above the ground that may adversely affect the approach, landing, or takeoff of an aircraft. Engineering models of wind shear for direct hazard analysis are presented in mathematical formulae, graphs, tables, and computer lookup routines. The wind profile data utilized to establish the models is described as to location, how obtained, time of observation and number of data points up to 500 m. These models provide the three components of wind speed in two-dimensional vertical planes, i.e., as functions of the vertical and horizontal coordinates. Statistical data is provided, where available, as to the risk of exceeding the wind shear environment predicted by the models.