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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。
A new generation of rocket liquid oxygen storage tank generally adopts the high-temperature helium pressurization scheme. After the high-temperature gas enters the liquid oxygen tank, the wall of the tank is heated. The increase of the wall temperature of the tank will cause the change of mechanical properties of the tank wall Thick design parameters, which in turn affect the performance of the whole arrow. Through the research, a one-dimensional distribution parameter model for analyzing the wall temperature of liquefied oxygen storage tank under high-temperature gas pressurization is proposed. The calculated results are in good agreement with the experimental results. Based on this model, three main factors affecting the wall temperature of the tank were analyzed.