基于雷达探测数据的ARJ21尾流遭遇响应研究

为了缩减ARJ21飞机与前机的尾流间隔、提高空域容量和机场运行效率, 采用基于机场激光测风雷达实际探测飞机尾涡数据, 结合国产客机ARJ21空气动力学响应模型, 进行了理论分析和实验验证, 取得了ARJ21飞机在不同前机尾流作用下受到的气动力和力矩随时间的变化情况。结果表明, ARJ21飞机作为后机跟随重型机B747, 间隔9.3km, 此时处于无颠簸状态, 滚转力矩系数小于极限范围; ARJ21飞机作为后机跟随中型机A320、B737, 间隔6km, 此时处于无颠簸状态, 滚转力矩系数小于极限范围。此研究结果说明ARJ21飞机尾流间隔具有一定的缩减空间。

Research on ARJ21 wake encounter response based on radar detection data

In order to reduce the wake separation between a ARJ21 aircraft and its front aircraft and to improve the airspace capacity and airport operation efficiency, theoretical analysis and experimental verification were carried out based on the actual detection of aircraft wake vortex data by airport wind lidar combined with the domestic aircraft ARJ21 aerodynamic response model. The aerodynamic force and moment of a ARJ21 aircraft under the action of different front aircraft wake were obtained. The results show that the ARJ21 is in no bump state when follows a B747 with an interval of 9.3km, and the rolling moment coefficient is less than the limit range. When follows a A320 or B737 with an interval of 6km, the ARJ21 is in the state of no turbulence, and the rolling moment coefficient is less than the limit range. The results show that the wake separation of a ARJ21 aircraft has a certain reduction space.