| Citation: | CHEN Jianwei, WANG Liangming, LI Zijieet al. Influence of two typical kinds of low-level wind shear on ballistic performance of rockets[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(5): 1008-1017. doi: 10.13700/j.bh.1001-5965.2017.0358(in Chinese)
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According to the wind field features of low-level wind shear, the engineering models of microburst and low-level jet are established based on the principle of fluid mechanics. The wind field models are combined with the six-degree-of-freedom ballistics model of rockets based on exterior ballistics theory. As an example, a kind of empennage-rocket was studied on its ballistic performance of prior trajectory influenced by these two kinds of wind shear. The simulation results show that both of these two kinds of wind shear have impact on the flight time, range, side-slip, falling velocity and attack angle of the rocket. Compared to the microburst, the low-level jet has a higher effect on the ballistic performance of rocket. Improving the strength and scale of these two kinds of wind shear makes a greater impact on the ballistic performance of rocket, and meanwhile, the strength of wind field is the determining factor for wind shear to affect the ballistic performance of rocket.
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