固体火箭技术2024，Vol.47Issue(2)：199-207,9.DOI:10.7673/j.issn.1006-2793.2024.02.007
可渗透喷管壁面开孔角度对推力性能影响的数值研究
Numerical study on effect of opening angle of permeable nozzle wall on thrust performance
靳雨祺 1薛玉琴 1李程珂 1关奔 1王革1
作者信息
- 1. 哈尔滨工程大学 航天与建筑工程学院,哈尔滨 150001
- 折叠
摘要
Abstract
The permeable nozzle is a novel adaptive altitude compensation nozzle.This type of nozzle possesses great potential for single-stage-to-orbit propulsion systems.Numerical simulations of the permeable nozzle flow were conducted to reveal its flow characteristics and thrust performance.The wave system and thrust performance of the permeable nozzle were discussed when the pore opening angle in the nozzle wall permeable section changed from 30° to 145°.The results show that too large or too small open-ing angles can degrade the nozzle's over expanded compensation ability;under under-expanded conditions,the smaller the opening angle is,the smaller the nozzle thrust loss is.When NPR=70.00,compensation effect of the nozzle is the best and the thrust coeffi-cient can be increased by more than 24.5%.Based on the principles of optimal total ballistic performance,the optimum opening angle is 30°.关键词
可渗透喷管/高度补偿/过膨胀/流动分离/波系Key words
permeable nozzle/altitude compensation/overexpansion/flow separation/wave system分类
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靳雨祺,薛玉琴,李程珂,关奔,王革..可渗透喷管壁面开孔角度对推力性能影响的数值研究[J].固体火箭技术,2024,47(2):199-207,9.
