搜索 - 科创

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φtp,m为两相流流量系数。定义装填参量M：ρp为推进剂密度，c*为特征速度，Ab为燃面面积，At为喉部面积（加起来就是喷燃比了）。φ(æ)为侵蚀函数，æ为燃通比。如果不清楚取值的话可以取1。

好在发动机也不负众望的成功运行‎隔热层还是非常完好的可以看到电木制作的喷管试车之后有很明显的烧蚀痕迹，所以电木制作成的喷管基本上只能用个一两次而且这次发动机喷出来的火，肉眼观察会感觉有点虚，我事后猜测应该是出口压强有点低的原因；并且出现了明显的过膨胀现象所以我在下次设计时应要考虑减少两相流损失

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