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自制一枚固体火箭发动机

吴裕泉2024-07-01 IP:广东

中文摘要

固体火箭发动机

Abstract

solid-propellant rocket engine

关键词

固体火箭发动机

solid-propellant rocket engine

㈠首先你得准备材料

①一个500w的恒温可调温电热炉

②一袋快干模型石膏粉

③一卷纤维胶带(10mm宽)

④八颗m4螺钉

⑤一卷鱼线(1mm)

⑥一根Ø5空心钢棒

⑦一个电钻(＋Ø5麻花钻头)

⑧一卷高温胶带(无米可用绝缘胶)

⑨一根Ø32mm，壁厚4MM，长150MM的PVC管

⑩良好的knsb燃料(燃烧后少残渣)

[详细制作方法查阅科创]

ⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢⅢ

㈡下面开始制作

首先将(石膏粉按比例调配好)

具体按自己来定，水越多流动性越好，但是干的速度越慢。反之，流动性越差，干的速度越快。把调好的石膏浆放一旁

再准备PVC管

将定好尺寸的PVC管两面切平，务必保持平整，在PVC管的一侧离端面7.5mm处拧入4颗M4螺钉

然后再找一张纸裁剪一小部分，比PVC管边缘大几毫米即可，裁好的纸把他覆再PVC管的一侧，用502胶水粘好(此步骤未保证浇筑石膏浆时防止漏出)，将PVC管覆纸的一面放工作台上，开始浇筑石膏浆，(PVC管与石膏接触的地方最好用小刀刮痕，让PVC与石膏接触面粗糙，增大与石膏的摩擦力)倒入15mm的石膏浆，等其干透，然后用Ø5的麻花钻转一个孔

做好以上步骤，开始浇筑燃料

在发动机中插入Ø5空心钢管，把准备好的熔融燃料倒入发动机中，用玻璃棒把燃料压实压平，燃料浇筑至离端面15mm处，等燃料完全冷却前，将钢棒螺旋式拔出，再裁剪一张PVC管内径尺寸的纸放入发动机燃料端面(防止石膏流入发动机燃料内，让燃料受潮)，压平，再将螺钉拧入离发动机端面7.5mm处

后开始浇筑石膏浆，把发动机剩余的空间倒入石膏浆，等待石膏浆固化

㈢增加发动机强度

将鱼线在发动机外壁绕圈，鱼线两头固定在螺钉上

再缠上纤维胶带或绝缘胶带(需多缠些鱼线保证强度)

这样，一枚发动机就制作完成了

下面看试车视频

share_2e3b444a1e219454b2c8a631a47acfe6.mp4 点击下载 ‎

电子秤改的推力测试台见笑了(●'◡'●)

喷口损耗有点大

[修改于 2年4个月前 - 2024/07/01 20:06:57]

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吴裕泉

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2022/07/05注册，10个月29天前活动

固体燃料火箭，牛反望远镜，电机绕线，羽毛球，摄影

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