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Aerodynamic characteristics of store during lateral jet assisted separation from cavity using free drop technique

Chinese Journal of Aeronautics 2023年第1期36卷 139-151页

作者： Fei XUE Yipeng REN Zheng LI Cong XU Dechen WEI Xiaolu MAO Zenghui JIANG China Academy of Aerospace Aerodynamics Beijing 100074China Bejing Institute of Astronautical Systems Engineering Beijing 100076China China Academy of Launch Vehicle Technology Beijing 100076China Institute of Aeronautical Engineering and Technology Binzhou UniversityBinzhou 256600China Nanhang Jincheng College Nanjing 211156China

Aimed at the problem of store separation from internal cavity,this paper innovatively puts forward a separation scheme of using lateral jet to assist store safe *** jet ensures that the store is continuously subjected to down head moment during separation,so as to ensure safe *** wind tunnel free drop test technique with lateral jet is established,which can ensure that there is no support interference in the motion process of the store and more truly simulate the motion of the *** feasibility of the new separation scheme is proved by wind tunnel *** test shows that the new scheme can also change the more dangerous state into a safe *** the analysis of the test data,the pitching moment coefficients of the store under different pressures in the high-pressure cylinder are obtained,and the effects of aircraft and cavity on the pitching moment of the store are *** 3 stages of store passing through cavity shock wave are *** results show that the lateral jet provides the store with continuous head down moment,and makes the store overcome the head up moment caused by the shock wave in front of the cavity,so as to ensure the safety of separation.

关键词： Compressible flow Internal cavity lateral jet Store separation Unsteady test Wind tunnel free drop test

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