搜索 - 科创

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燃烧室为3mm厚7075铝管，长400mm直径45mm 喷口与堵头为45#钢扩张比为10 扩张半角为10° 收敛半角为60° 使用4节9cm长rnx燃料柱 7075铝管 190元比较...

下面的黑火药点燃使温度达到一定，从而使kmno4分解出氧气，这样就使黑火药在氧气中燃烧，加大火药的推力。不过这只是猜想，实验并没有太大变化。

为什么淘宝没有一家可以加工喷口呢用的就是以前论坛里52mm那个图有人知道哪里可以加工吗？代工也可以啊[s::handshake] 完了那么久塑料的，好想试试金属的啊

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