搜索 - 科创

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引用 atemphot:好吧，那能上500米，项目也是可以做一做嘛。搞个航天飞机的概念咯我设想是要能把飞机做在一个大整流罩内，整流罩做成两半可弹开式的，火箭飞到最高点时，整流罩弹开，然后释放出飞机。...

关于COM自动化智能类型的使用： 1. CComPtr<idispatch>特化出了很多成员函数，其中最好用的是InvokeN，InvokeN只有4个参数，大大简化了使用。而IDispatch::In...</idispatch>

目前论坛里好一点的发动机多使用锥形扩张段的拉瓦尔喷管，直锥形的喷管在12度时效率最好。同时，扩张比也是一个重要因素，由于气体在扩张段膨胀，压力会下降，当在出口处压力越接近围压（周围空气压力）效率越好，...

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