过氧化氢加酒精补燃气体发生器实验研究
Experimental studies of gas generator based on hydrogen peroxide and hypergolic ethanol
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摘要: 介绍了过氧化氢催化分解气体加酒精补燃以提高气体发生器排气温度的理论计算和分析方法，并建立了一套实验研究装置。 装置中质量分数为90%的过氧化氢溶液由高压气挤推，通过催化床完成催化分解，产生高温气体；质量分数为97%的酒精溶液经由分布喷嘴喷入过氧化氢分解气体中发生自燃，从而提高气体温度。实验研究了采用不同酒精喷入形式和参数对气体发生器排气温度均匀性的影响。结果表明：利用沿气体发生器燃烧室周向分布的多喷嘴进行酒精喷注，并与高浓度过氧化氢催化分解气体进行混合燃烧的方法，能够有效提高气体发生器的排气温度，并得到均匀的排气温度场。Abstract: The calculating procedure that ethanol (C2H6O) reacting with Hydrogen peroxide (H2O2) was deduced based on chemical theory and characters of C2H6O and H2O2. An experimental gas generator installation was established and applied to research the self-ignition behavior of ethanol while it was injected into hot oxidizing gas mixture produced by decomposing of H2O2 with high concentration. The impacts of different spray nozzle types and injecting pressures on temperature uniformity of the exhausted flow field of the gas generator were studied experimentally. Test results suggested that the autogenous combustion can be realized and the calculation method can be used to predict the performance of a gas generator adequately.
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Key words:
- gas generator /
- ejector /
- autogenous combustion /
- hydrogen peroxide /
- ethanol /
- experiments
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