搜索 - 科创网

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内容：(国防科学技术大学航天与材料工程学院，长沙，410073)张钢锤（中国航天科技集团公司四院41所，西安，710025）摘要介绍了固液火箭发动机的工作过程，研究了其特点和性能，讨论了固液火箭发动机符合低成本,20世纪80年代末提出了新一代运载火箭应贯彻低成本、高可靠、无污染的3条原则，受到了各国航天界科技工作者的赞同［5］，这3条原则完全符合运载火箭的发展规律。,本文将根据固液火箭发动机的工作过程，研究其特点和性能，讨论固液火箭发动机符合低成本、高可靠、无污染的3条原则，并研究其在空间发射的应用前景。?,在未来几十年里，高安全性、高可靠性、低成本和对环境污染小的新型小运载火箭会得到飞速发展。,7 结论与液体火箭发动机和固体火箭发动机相比，固液火箭发动机技术还不成熟，但随着运载火箭国际商业发射市场竞争日益激烈，具有高安全性、高可靠性和低成本等特点的固液火箭发动机在今后一段时间里会得到飞速发展。

内容：很多人可能也知道，在射击的时候突然将枪对准灯泡，可以让游戏百发百中…… 我以前买过一本介绍红白机维修的书，上面也讲过光枪的原理，基本上和这个类似只能说昭和时代的鬼子工程师厉害，用低成本就搞出了一样一个东西

内容：PS:话说就算低成本也不是没办法解决尾翼偶和度下降的问题，既然尾翼会带来偶和度下降的问题，那不如近一步的利用尾翼段偶和度下降的这情况，把尾翼段设计成次口径结构让它只在空气空力下起作用不参与电磁作用难道不行么

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