搜索 - 科创

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我打算做个大发动机，直径7cm象200ml烧杯那么大，高20cm,燃烧室长15cm，外壳厚5mm,堵头厚1cm，16颗螺丝固定，喷口8mm，最大喷燃比约为560，喷口扩张段厚3mm，长4cm,末端直径3cm

: 经过一段时间试验,以报纸材料为主,少量牛皮纸(或报刊光板纸)为辅白乳胶粘接(绳勒后干燥),独立成型的水泥拉瓦喷嘴(特别感谢ABC的帮助)101胶水固定,熔融的冰糖做堵头.制成直径14MM的KNDX发动机性能基本稳定

可是在实际操作的时候，我明明也加了5020胶水，也用了盐浴，熬出来的东西却始终没有变成和面团一样可塑，顶多就是有点像稠浆糊，要是多熬一会吧，却又烤干了（结果我是用粉压法装进发动机的），也不会像ABC说的那样会进入

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