CAJ | 학술논문

新一代运载火箭液氧贮箱普遍采用高温氦气增压方案，高温气体进入液氧贮箱后对贮箱壁面进行加热，贮箱壁面温度的升高会引起材料机械性能变化而影响贮箱壁厚的设计参数，进而影响到全箭性能。通过研究，提出一种分析高温气体增压下液氧贮箱壁温的一维分布参数模型，使用该模型的计算结果与试验结果吻合良好。以此模型为基础，对影响贮箱壁温的3个主要因素进行分析。
신일대운재화전액양저상보편채용고온양기증압방안，고온기체진입액양저상후대저상벽면진행가열，저상벽면온도적승고회인기재료궤계성능변화이영향저상벽후적설계삼수，진이영향도전전성능。통과연구，제출일충분석고온기체증압하액양저상벽온적일유분포삼수모형，사용해모형적계산결과여시험결과문합량호。이차모형위기출，대영향저상벽온적3개주요인소진행분석。
High-temperature helium pressurization system is commonly used in LOX tanks of Chinese new generation launch vehicles. The tank wall is heated after high-temperature helium entering the tank. So the temperature rising of tank wall will change material mechanical property and influence its thickness design, and therefore the performance of the launch vehicle will be affected. In this paper, a model which could be used to analyze the temperature distribution of LOX tank wall during high-temperature gas pressurization is presented. The analysis results with the model show good agreement with the experiment results. Based on this model, three main factors which affect the temperature of tank wall are analyzed.