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提问求助类话题必须提供充足的已知条件，介绍为了解决问题已经做的工作。凡可以通过简单搜索或查阅教科书解决的问题，不应提问求助。连续发布提问求助、懒惰型提问、上帝式提问等，将受到处罚直至封号。

提问帖:制作模型火箭需要向公安局备案吗

李青2024-10-23 IP:黑龙江

中文摘要

总是有种不详的预感😭

新人很少发帖

有些问题想向各位前辈请教一下

火箭燃料目前有两种

XXXXsb 2.ap基669

燃烧室外径为32.5mm

来自特殊话题声明：求助提问

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tor44

26天13时前 IP:江苏

D896879

1楼

玩就别怕，怕就别玩。（适用于能、火箭、模型枪等各个灰色圈）

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李青

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