搜索 - 科创

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看看 https://www.kechuang.org/t/7432还有可以淘宝买四凯的小火箭套件，那个带开伞，先有个直观体验再动手自己做更好。

用户表示发动机本身确有其事，能点火、有推力，实际卖的火箭套件也有尾翼。但是价格昂贵、性能很差、推力不足，需要很长的发射架，而且开伞装置极其简陋。

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