Dynamics Characteristics and Influencing Factors of Multistage Canister Gas Ejection of Rockets

被引：0
|
作者：
Pan X. [1 ]
Jiang Y. [1 ]
Wang B. [2 ]
Ren Y. [1 ]
机构：
[1] Beijing Institute of Technology, School of Aerospace Engineering, Beijing
[2] Beijing Institute of Electronic System Engineering, Beijing
来源：
Binggong Xuebao/Acta Armamentarii | 2022年 / 43卷 / 06期
关键词：
ejection; finite element; launch dynamics; rocket multistage canister gas ejection;
D O I：
10.12382/bgxb.2021.0316
中图分类号：
学科分类号：
摘要：
The dynamic characteristics of a multistage canister gas ejection structure and the influencing factors during ejection are analyzed to improve the ejection performance of rockets and to study the safety of gas ejection structure. The structural composition,topological relationship and excitation load of the rocket multistage canister ejection system are analyzed,and a finite element model of the ejection system are established for simulation analysis. Through experiments,it is verified that the simulation accuracy of finite element model meets the simulation requirements. The influences of the gap of cylinder section,the thrust eccentricity and the launch angle on the safety of multistage canister gas ejection structure are analyzed based on the finite element model. It’s found that the launch angle is the main influencing factor that affects the ejection safety,and the gap between the cylinder sections and the thrust eccentricity have also effect on the ejection safety. he influencing factors lead to the ejection deflection of rocket,the interaction force between the canister sections and the increase in the maximum lateral displacement. When the gap between the canister sections is increased to 0. 3 mm or the launch angle is deflected to 3◦, a greater threat will be posed to ejection safety. © 2022 China Ordnance Society. All rights reserved.
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页码：1277 / 1287
页数：10
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