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文号D885643

编辑文章

公里级探空火箭研制和发射记录

dc2024-05-21 IP:广东

关键词

模型火箭固体火箭knsb探空

第一次在科创发文，请各位大佬海涵。

由于不会搞大型发动机，所以笔者购买了闲鱼星际迷航的金属机，knsb，工作1.25s，平均推力80kg，挺离谱的

火箭的设计采用open rocket

分成三节打印，采用pla材料

在箭体上方开了个小门好放设备

这个仓室里放了gps测速仪（gps挂在外面），高度仪，高度开伞装置

以及山狗拇指相机，画质比那些一百多块的小相机好不少，几百块的价格也能接受

仓室放不下这么多东西，只好把一个电池挂外面…

开伞方式采用化学开伞，采用0.9米直径的塑料摸材质的降落伞，体积小，较便宜

IMG_3544.mp4 点击下载 ‎

IMG_3514.mp4 点击下载 ‎

IMG_3380.mp4 点击下载 ‎

下仓室安放了2w图传和500毫安的2s电池，大概可以用40分钟

我给箭体割开了个口，然后把电池图传摄像头都放进去，只留下充电线和电源线漏出来。

由于不知道发动机套管怎么做所以直接把整个发动机用ab胶粘进箭体里，只漏出喷口好换药柱，装填好药柱后拿保鲜膜封住喷口以防潮。

发射架采用导杆式，用可拼接的晾衣杆做导轨，为了省钱就拿找人切割过的木板做固定环，如果有人知道更便宜的制作材料请说一下

点火系统采用点烟花的遥控点火器，有人说这种东西可能会被别的信号干扰导致误触发，是真的吗？

制作完成的样子

出发前往发射场

地面视角

IMG_3657.mp4 点击下载 ‎

IMG_3657.mp4 点击下载

无人机俯瞰视角

IMG_3712.mp4 点击下载 ‎

未开伞成功，导致火箭失踪，用open rocket简单模拟了一下高度，快到3km了（如果一切正常运行）

拿无人机在周围找了一圈，一无所获，看来以后得加多找火箭的经验了。

全部只看作者

小叮当0312

6个月4天前 IP:中国

D885762

1楼

1.7马赫？担心壳体的强度够不够用

小叮当0312

6个月4天前 IP:中国

D885764

2楼

看那个视频里的最末端的烟雾感觉没到音速，而且好像没听到音爆

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作者

6个月3天前 IP:广东

D885803

3楼

引用小叮当0312发表于2楼的内容

看那个视频里的最末端的烟雾感觉没到音速，而且好像没听到音爆

过音速的烟雾是啥样的？至于音爆，大飞机才会有吧️

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6个月3天前 IP:广东

D885804

4楼

引用小叮当0312发表于1楼的内容

1.7马赫？担心壳体的强度够不够用

壳体的强度够不够是怎么计算的？

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