搜索 - 科创网

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内容：304不锈钢固然可以减少侵蚀，但结构重量太大，得不偿失，而如果全采用酚醛树脂用作喷管，高温高压的燃气带来的强烈冲刷，会使其喉部严重扩张带来的巨大的损失，也不可取，但如果使用酚醛树脂用作喷管主体结构，用石墨充当喷管喷口的喉部,确定好喷口扩张比后，使用相关设计工具设计喷管内型面尺寸综合考虑电木和石墨的耐冲刷耐高温能力与喷口尺寸，我们使用一个直径6mm，外径12mm ，厚度3mm的石墨衬喉，套在电木喷管立体入口内发动机喷口剖面图

内容：少量HTPB進行力學改性，配以車床和CNC做出的星孔藥柱 4根備用，每根規格都是200長度嘎嘎~ 今天中午，備齊所有裝備發動機數據如下：殼體材質：40Cr噴口堵頭材質：45#噴吼材質：熱解石墨

内容：火箭发动机数据如下图：初代发动机由于没有考虑到石墨喷管导热性很好，导致第一次凌霄一号固体火箭发动机试车后，石墨喷管扩张增大，不能再次使用。

约找到 1352 条结果，耗时 0.275 秒

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当前账号的附件下载数量限制如下：