搜索 - 科创

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说明：图中不标准之处请睁一只眼，闭一只眼，要求不要太高由于铝合金密度小，不准备减小厚度，铁管密度太大，准备减到2.5MM，可以吗

源于上次的30mm的发动机，在上面进行了修改，把喷口与堵头的设计也改了改经过Antonio的提醒，将螺丝改为喷管外部固定下面是一些数据然后我在想如果把用螺丝固定改用下面这种65锰钢的卡销行不行，效果好...

发动机材料 40Cr喷口及堵头材料：45#碳素最大外径58mm内径50mm燃烧室有效长度220mm壁厚2.5mm喉口9.0mm喉长4。0mm扩张比9.7扩张半角 12°收敛圆弧R35压缩段喉部扩张段R...

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