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海浪对掠海飞行有着重要影响,以T639预报风场驱动WW3(WAVEWATCH-III)海浪模式,对2013年3月发生在中国海的一次冷空气海浪场进行数值模拟.结合飞行高度探测的标准差、海浪浪高的标准差,进一步实现了击水概率的数值预报,为低空飞行器的航迹规划提供科学依据.主要计算了5m高度、10m高度、15m高度的击水概率,并对比不同飞行高度击水概率的差异.结果表明,以T639预报风场驱动WW3海浪模式,可以较好地预报中国海海浪场、击水概率场.在冷空气影响下,中国海的击水概率出现明显增幅.飞行高度低于10 m时,海浪会对掠海飞行器的安全造成很大威胁.
Sea waves have an important influence on the swept-sea flight, and the WW3 (WAVEWATCH-III) ocean wave mode is predicted by the wind field T639 to simulate a cold-air sea wave field occurring in the Chinese Sea in March 2013. Combined with the standard deviation , The standard deviation of sea wave height and wave height, further realize the numerical prediction of the probability of water hammer and provide a scientific basis for the trajectory planning of low-altitude aircraft.The water-hit probability of 5m height, 10m height and 15m height is calculated, The results show that forecasting wind field of WW3 driven by T639 forecast wind field can predict the probability field of sea wave field and water striking in China sea well.The striking probability of China Sea shows a significant increase under the influence of cold air.The altitude of flight below 10 m, waves can pose a significant threat to the safety of swept-haul aircraft.