| Citation: | CHENG Huhua, LI Juan, XIAO Yunqing, et al. Influence of wind deviation on rocket maximum aerodynamic load accuracy[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(10): 2034-2042. doi: 10.13700/j.bh.1001-5965.2020.0358(in Chinese)
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The prediction accuracy of upper wind has an important impact on the flight safety of launch vehicle, which is mainly manifested in the impact on the accuracy of the maximum aerodynamic load. Based on wind field from sounding data in a region, the influence of wind deviation caused by upper wind forecast on the accuracy of rocket maximum aerodynamic load is analyzed. It is found that the accuracy of the maximum aerodynamic load forecast is significantly reduced with the extension of the upper wind forecast time. The relative error increases from 5.68% on the first day to 26.49% on the 11th day; the accuracy of the maximum aerodynamic load forecast is related to the season, with the highest forecast accuracy in autumn and the lowest in spring. These findings have reference value in the flight assurance and safety decision-making of rocket launch.
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