航空兵器2025，Vol.32Issue(2)：121-127,7.DOI:10.12132/ISSN.1673-5048.2024.0132
固化降温过程中无喷管助推器药柱结构完整性分析
Structural Integrity Analysis of Nozzleless Booster Propellant Grain in the Process of Curing and Cooling
隗镔 1刘强 1那旭东 2刘珏1
作者信息
- 1. 湖南宏大日晟航天动力技术有限公司,长沙 410005
- 2. 国防科技大学空天科学学院,长沙 410073
- 折叠
摘要
Abstract
In order to accurately evaluate the structural integrity level of the solid rocket ramjet nozzleless booster propellant grain during curing and cooling,the structural integrity of the nozzleless booster propellant grain of a solid rocket ramjet engine under uniform temperature field with linear temperature reduction and non-uniform temperature field considering convective heat transfer between nozzleless booster and environment is calculated by using finite ele-ment software,and the results of finite element calculation are compared with the measured results of CT.The results show that the safety coefficient of the grain is 2.88 under uniform temperature field and 2.53 under non-uniform tem-perature field,and the most dangerous positions are located on the low burning rate grain.The simulation results in non-uniform temperature field are closer to the experiment results.It is necessary to consider the non-uniform tempera-ture field in the integrity analysis of nozzleless booster grain.关键词
无喷管助推器/药柱/结构完整性/不均匀温度场Key words
nozzleless booster/grain/structural integrity/uniform temperature field分类
武器工业引用本文复制引用
隗镔,刘强,那旭东,刘珏..固化降温过程中无喷管助推器药柱结构完整性分析[J].航空兵器,2025,32(2):121-127,7.
