固体火箭技术2024，Vol.47Issue(2)：231-236,6.DOI:10.7673/j.issn.1006-2793.2024.02.011
燃速催化剂对小喉径长工作时间燃气发生器喷管沉积的影响
Influence of burning rate catalyst on deposition in nozzle of small throat-diameter long-combustion-time gas generator
占明明 1李志勇 1李泽军 1姚鲲 1李鑫1
作者信息
- 1. 航天化学动力技术重点实验室,襄阳 441003||湖北航天化学技术研究所,襄阳 441003
- 折叠
摘要
Abstract
The long-combustion-time gas generator with a small throat-diameter nozzle is easy to deposit in the nozzle.Aiming at the influence of the type and content of burning rate catalyst in the low burning temperature gas generatant formula on the nozzle deposition,the deposition mechanism was studied by means of the formula theoretical calculation,interior ballistic performance test of grain,deposition composition analysis and temperature field simulation of the nozzle.The results show that the type of burning rate catalyst in low combustion temperature gas generatant has a great influence on the nozzle deposition,and iron-containing burn-ing rate catalyst is easier to deposit than zinc-containing catalyst;the higher the catalyst content is,the easier the deposition oc-curs;the main components of nozzle deposition are carbon and iron,and the composition in the gas is FeCl2;the deposition mecha-nism is that FeCl2 has a solid-liquid conversion process under the temperature field of the low-temperature gas generator nozzle,it is easy to deposit at the nozzle when the content exceeds 0.13%.Accordingly,the improvement measures of reducing the content of i-ron-containing burning rate catalyst or adopting iron-free burning rate catalyst were put forward.关键词
燃气发生剂/燃速催化剂/喷管/沉积Key words
gas generator/burning rate catalyst/nozzle/deposition分类
航空航天引用本文复制引用
占明明,李志勇,李泽军,姚鲲,李鑫..燃速催化剂对小喉径长工作时间燃气发生器喷管沉积的影响[J].固体火箭技术,2024,47(2):231-236,6.
