摘要
为探究高沸点甲烷混合改性推进剂的最优配制方案,对甲烷的4种二元混合体系和2种三元混合体系,在不同组分比例条件下的泡点温度进行了计算分析。采用不同的状态方程和混合规则共构建泡点计算模型11套,并利用实验数据对计算模型的准确性进行评估,采用最优模型对混合改性推进剂的泡点温度提升方案展开讨论。结果表明,CH_(4)+C_(2)H_(6)混合体系的泡点温度提升效果最好,在压力0.3 MPa,C_(2)H_(6)质量分数20.4%的条件下,其泡点温度提升至128.71 K,相较纯甲烷的沸点温度提升2.0 K。三元混合体系对泡点温度的调控效果相较二元混合体系无优势,其效果介于所对应的两种二元混合体系之间。
To determine the optimal formulation strategy for methane-based mixed modified propellants,bubble point temperatures of four binary and two ternary methane mixed systems were analyzed across varying component ratios.Using different equations of state and mixing rules,e-leven bubble point calculation models were established.The accuracy of these models was evalua-ted with experimental data,and the optimal model was employed to explore the optimal formulation strategy of mixed modified propellants.The results indicate that the CH_(4)+C_(2)H_(6) mixed system shows the best improvement in bubble point temperature.With a C_(2)H_(6) mass fraction of 20.4%and a pressure of 0.3 MPa,the bubble point temperature of the CH_(4)+C_(2)H_(6) mixed modified pro-pellant reaches 128.71 K,which is 2.0 K higher than that of pure methane.Compared with the binary mixed systems,the ternary mixed system shows no advantage in increasing the bubble point temperature of the propellant,as its effect intermediate between the two corresponding binary mixed systems.
作者
黄平瑞
张春伟
罗泰茗
苏健
王遥
陈永
杨括
陈静
Huang Pingrui;Zhang Chunwei;Luo Taiming;Su Jian;Wang Yao;Chen Yong;Yang Kuo;Chen Jing(National Key Laboratory of Deep Space Exploration,Hefei 230000,China;Beijing Institute of Aerospace Testing Technology,Beijing 100074,China;Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China)
出处
《低温工程》
北大核心
2025年第2期9-17,77,共10页
Cryogenics
基金
深空探测全国重点实验室开放基金资助项目(NKLDSE2023B003)。
关键词
甲烷
混合改性推进剂
泡点温度
状态方程
气液相平衡
methane
hybrid modified propellant
bubble point temperature
equation of state
vapor-liquid equilibrium
