公开(公告)号：US5036480A

公开(公告)日：1991-07-30

申请号：US492000

申请日：1990-03-12

申请人： Terry L. Zweifel ,  J. Rene Barrios

发明人： Terry L. Zweifel ,  J. Rene Barrios

IPC分类号： G01M9/06

CPC分类号： G01M9/06

摘要： A method and apparatus for simulating a windshear. A vortex is modelled in terms of a family of concentric streamlines and the position of an aircraft is defined with respect to the vortex as the aircraft traverses a reference plane. Four or more vortices are used to generate streamlines which match those encountered in an actual microburst. Each vortex placed above the simulated ground level is matched by a vortex of equal strength but opposite rotation placed below the simulated ground level at a distance equal but opposite to the height of the vortex above the ground. Strengths, distance from the vortex center, and height of the vortex may be programmed by the user. The high degree of flexibility permits accurate reproduction of the winds generated by actual microbursts for testing and developing microburst detection devices. The use of an algorithm which may be dynamically varied as a function of aircraft position obviates the need for simulating by discrete windshear magnitude as in conventional predetermined windshear tables and minimizes data storage requirements.

摘要翻译： 一种用于模拟风切变的方法和装置。 涡流以同心流线系列为模型，当飞行器穿过参考平面时，飞行器的位置相对于涡流来定义。 使用四个或更多涡旋产生与实际微爆中遇到的流线相匹配的流线。 放置在模拟地面以上的每个涡流通过相等强度的涡旋相匹配，但相反的旋转位于模拟地面下方，距离地面上方涡流高度相等但相反的距离处。 强度，与涡流中心的距离以及涡流的高度可由用户编程。 高灵活性允许精确再现由实际微爆发生的风，用于测试和开发微爆探测装置。 使用可以作为飞机位置的函数而动态变化的算法消除了如常规预定风切变表中的离散风切变幅度的模拟的需要，并且使数据存储要求最小化。

公开(公告)号：US5361065A

公开(公告)日：1994-11-01

申请号：US521878

申请日：1990-05-11

申请人： David A. Johnson ,  Terry L. Zweifel ,  J. Rene Barrios

发明人： David A. Johnson ,  Terry L. Zweifel ,  J. Rene Barrios

IPC分类号： G05D1/06 ,  G08B23/00

CPC分类号： G05D1/0623

摘要： A windshear guidance system for guiding an aircraft during a microburst windshear is provided. This system includes a time comparison subassembly, an airspeed comparison subassembly and a pitch command subassembly. The pitch command subassembly includes a calibrated air speed source, latch means connected to the calibrated air speed source, switch means connected to the latch means, and a pitch guidance command unit connected to the switch means.

摘要翻译： 提供了一种用于在微爆风剪切中引导飞机的风切变引导系统。 该系统包括时间比较子组件，空速比较子组件和俯仰命令子组件。 音调指令子组件包括校准的空气速度源，连接到校准空气速度源的闩锁装置，连接到闩锁装置的开关装置和连接到开关装置的俯仰引导指令单元。

公开(公告)号：US4863120A

公开(公告)日：1989-09-05

申请号：US198602

申请日：1988-05-02

申请人： Terry L. Zweifel ,  J. Rene Barrios

发明人： Terry L. Zweifel ,  J. Rene Barrios

IPC分类号： G05D1/06

CPC分类号： G05D1/0623

摘要： An aircraft guidance system for optimizing the flight path of an aircraft in the presence of a windshear maximizes the time the aircraft remains in the air and the distance traveled regardless of the magnitude of the windshear, in the presence of horizontal or vertical windshear components, while effectively minimizing excitation of the aircraft's phugoid mode. A flight path angle is commanded sufficient to clear any obstacle that may be found in the airport vicinity. For longitudinal or horizontal shears, a slightly positive constant flight path angle which is a function of the magnitude of the vertical wind is added to the slightly positive flight path angle command to produce a modified command that compensates for the decrease in flight path angle relative to the ground caused by the vertical wind. The system inhibits exceeding stick shaker angle of attack by reducing the command signal until the actual angle of attack is equal to or less than the stick shaker angle of attack.

摘要翻译： 用于在风切变机存在的情况下优化飞行器的飞行路径的飞行器引导系统使得在存在水平或垂直风切变部件的情况下，飞机保持在空气中的时间和行进的距离不受风切变的大小的影响，同时 有效地最小化飞机虚拟模式的激发。 指示飞行路径角度足以清除机场附近可能发现的任何障碍物。 对于纵向或水平剪切，将稍微正的恒定的飞行路径角度作为垂直风的幅度的函数，被加到略微正的飞行路径角度命令中，以产生修正的命令，该修正命令补偿相对于 地面造成的垂直风。 该系统通过减少命令信号来抑制超过摇杆的迎角，直到实际的迎角等于或小于摇杆的迎角。