液体火箭冷弹射推进剂充液比影响研究

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摘要为研究冷弹射载荷作用下不同充液比的液体推进剂晃动对火箭发射精度的影响，以冷弹射液体火箭为研究对象，采用基于MPS方法的流-固耦合技术对推进剂晃动的动力学响应进行研究，得到液体推进剂充液比对火箭贮箱的干扰及其对火箭初始扰动和适配器受力特性的影响。结果表明：贮箱充液比越大，液体推进剂对单个贮箱的作用力越大；在一定范围内，随着充液比的增加，推进剂晃动使得火箭的离轨俯仰和偏航角速度先增大后减小，80%的充液比会使得火箭初始扰动及适配器受力较为恶劣；推进剂晃动问题在液体火箭冷弹射动力学研究中不可忽略。

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	王璟慧1
	姜毅1
	杨昌志2
	魏冬冬2

关键词 ：液体火箭, 推进剂晃动, 充液比, 流-固耦合

Abstract：In order to study the effects of liquid propellant sloshing with different liquid filling ratios on rocket launch accuracy under cold ejection load, the liquid rocket with cold ejection is studied in this paper. The dynamic response of propellant sloshing is studied by fluid-solid coupling technique based on MPS method. Finally, the interference on rocket tank and influence on initial disturbance of rocket and mechanical characteristics of adaptor at different propellant liquid filling ratio are obtained. The results show that the larger the liquid filling ratio is, the greater the force of liquid propellant on a single tank is; In a certain range, with the increase of the filling ratio, the propellant sloshing makes the off-orbit pitch and yaw angular velocity of the rocket increase first and then decrease; When the liquid filling ratio is 80%, the initial disturbance of the rocket and the force of the adapter are worse. Propellant sloshing can not be ignored in the dynamics study of liquid rocket cold ejection.

Key words： liquid rocket propellant sloshing liquid filling ratios fluid-structure coupling

收稿日期: 2022-04-12 出版日期: 2023-03-28

引用本文:

王璟慧1，姜毅1，杨昌志2，魏冬冬2. 液体火箭冷弹射推进剂充液比影响研究[J]. 振动与冲击, 2023, 42(6): 313-324.
WANG Jinghui1， JIANG Yi1， YANG Changzhi2, WEI Dongdong2. Influence of propellant filling ratio for liquid rocket cold ejection on rocket launch accuracy. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(6): 313-324.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I6/313

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