火箭推进

提出了一种基于甲醇裂解工作的ATR发动机方案,并对特定裂解气成分的甲醇ATR发动机性能进行计算,研究了裂解气中裂解度对发动机性能的影响规律。结果表明:随着发动机转速上升,推力逐渐上升,比冲先增加后减小,在90%转速百分比时,比冲最高; 在同一转速下,甲醇裂解度越高,发动机比冲越大,在裂解度100%、转速百分比90%条件下,发动机比冲最高达到约793 s; 随着裂解度逐渐升高,裂解气比热容逐渐升高。

A new ATR(Air Turbo Rocket)engine scheme based on the methanol cracking is proposed in this paper.The performance of methanol ATR engine with specific composition of cracking gas is calculated, and the influence of cracking ratio on the engine performance is investigated.The results show that the thrust gradually increases, and the specific impulse increases first then decreases as the engine speed increases.The specific impulse reaches the top at the 90% designed speed.Under the same engine speed, the higher the cracking ratio of methanol, the greater the specific impulse of engine.Under the condition of 100% cracking ratio and 90% rotation speed, the specific impulse is up to 793s.In addition, the specific heat capacity of cracking gas increases with the increase of cracking ratio.

引言
1 工作原理及性能
2 裂解度影响
3 结论

图1 甲醇ATR发动机工作原理示意图<br/>Fig.1 Sketch of working principle for methanol ATR engine

图1 甲醇ATR发动机工作原理示意图
Fig.1 Sketch of working principle for methanol ATR engine

图2 ATR发动机及其截面示意图<br/>Fig.2 Sketch of ATR engine and its sections

图2 ATR发动机及其截面示意图
Fig.2 Sketch of ATR engine and its sections

表1 甲醇ATR发动机设计点组件参数(部分)<br/>Tab.1 Component parameters of methanol ATR engine at designed state(partial)

表1 甲醇ATR发动机设计点组件参数(部分)
Tab.1 Component parameters of methanol ATR engine at designed state(partial)

图3 推力、比冲随转速变化结果<br/>Fig.3 Results of thrust and specific impulse with rotating speed

图3 推力、比冲随转速变化结果
Fig.3 Results of thrust and specific impulse with rotating speed

图4 燃烧室参数随转速变化结果<br/>Fig.4 Results of combustor parameters with rotating speed

图4 燃烧室参数随转速变化结果
Fig.4 Results of combustor parameters with rotating speed

图5 不同裂解度、不同转速下甲醇流量变化结果<br/>Fig.5 Mass flow rate of methanol at different cracking ratios and rotating speeds

图5 不同裂解度、不同转速下甲醇流量变化结果
Fig.5 Mass flow rate of methanol at different cracking ratios and rotating speeds

图6 不同裂解度、不同转速下推力和比冲变化结果<br/>Fig.6 Thrust and specific impulse at different cracking ratios and rotating speeds

图6 不同裂解度、不同转速下推力和比冲变化结果
Fig.6 Thrust and specific impulse at different cracking ratios and rotating speeds

图7 不同裂解度时裂解气cp变化结果<br/>Fig.7 Specific heat capacity of cracking gas at different cracking ratios

图7 不同裂解度时裂解气cp变化结果
Fig.7 Specific heat capacity of cracking gas at different cracking ratios

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备注

引言

1 工作原理及性能

2 裂解度影响

3 结论

期刊信息