搜索 - 科创

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参数：外径50内径40，长度420，装药长度350，喷口8mm，扩张比10 加工的收了我310，共4喷口，一堵头，一壳体。壳体用整根7075铝棒车制，堵头喷口均为45钢。上图

发动机长90mm，内径35mm，壁厚我让他自行决定，尽量接近3mm，用无缝钢管车制，壁厚5mm，最大喷燃比忘了是200还是250，喷口6mm，堵头和喷口采用螺纹和螺丝双重固定，螺纹主要用来防止漏气另一...

新人第一次发帖，有什么不对的地方请指出今年暑假的时候，我试车了一枚发动机，KN-SB燃料，主体为钢管，喷口和堵头用的是7075铝。外经40毫米，内径28毫米，主要是怕炸我之前没想着发帖所以也没有拍多少...

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