| 固体火箭发动机动力相似准则研究 |
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| 引用本文： | 蔡国飙,孙冰.固体火箭发动机动力相似准则研究[J].固体火箭技术,1997,20(1):15-20. |
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| 作者姓名： | 蔡国飙 孙冰 |
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| 作者单位： | 北京航空航天大学!北京，100083 |
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| 摘 要： | 本文以小发动机模拟大发动机为目标，探讨固体火箭发动机的动力相似准则，首先把动力相惟问题归结为燃烧室，喷管一体化流动的相似问题，通过对全三维Ｎ－Ｓ方程所进行的无量纲化分析，在几何相似的前提下，得到固体火箭发动机动力的流上似准则，再通过对控制方程的单值性条件所进行了无量纲化分析，得到了在初始状相似条件下的燃速相似准则；另外还得到了飞行条件相似、燃烧温度相似以及普朗特数相等。并进一步对这些准则进行了分析
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| 关 键 词： | 固体推进剂 火箭发动机 相似定理 动力模拟 |
Research of Dynamic Similar Laws of Solid Rocket Motor |
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| Cai Guobiao, Sun Bing, Zu Guojun.Research of Dynamic Similar Laws of Solid Rocket Motor[J].Journal of Solid Rocket Technology,1997,20(1):15-20. |
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| Authors: | Cai Guobiao Sun Bing Zu Guojun |
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| Abstract: | The paper discusses the dynamic similar laws of solid rocket motor based on using small motor to simulate big motor as the goal. And gains five dynamic similar laws, which are flow similar law under geometrical similar,combustion rate similar law under initial status similar, flight condition similar,combustion temperature similar and Pr number equal. How to ensure these similar laws to be performed in experiment and how to use them in practice design are discussed by ana1ysis. |
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| Keywords: | So1id propellant rocket engine Similarity theorem Dynamic modelling |
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