搜索 - 科创网

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内容：在微型探空火箭（业余探空火箭）中，对于一二级箭体的分离相关实践理论较少，目前以kc为例，虽然有一些坛友提出了相关措施，但比较完整的分离文章目前我只看到了张世杰同学的 XXXXXXXXXXXXXXXXXXXXXXXX,我们团队通过研究，创新提出了利用3D打印材料的热塑性实现一二级火箭热分离的方法。,具体来讲就是使用远程点火控制第一级火箭点火（在地面），使用延时控制装置延时点火第二级火箭，在一二级火箭连接处做镂空设计，用6个7mm直径的圆柱做连接，当第二级发动机点火时，火箭发动机的高温高压燃气喷在一二级连接处,，连接处由于使用的3D打印材料熔点在200度以下，连接处被发动机尾焰的高温熔断实现一二级火箭的分离，第一级火箭分离后不回收，第二级火箭设有降落伞回收舱（降落后分离回收，再次使用时只需要更换部分零级），该分离方法充分利用了

内容：如题，本身是二级火箭的，但由于二级点火延迟过长，导致其出现了类似“标枪”的弹道。,悲剧原因分析：经后期音频分析，一级发动机停止工作后延时1.5s点燃二级发动机，开伞剂轻微爆炸后0.2s二级发动机开始工作。,初步分析是钻孔深度不足导致点火仍有延时，此1.5s内箭身速度迅速降低，低于气动稳定速度，头部转向，此时二级发动机点火工作，迅速回复到气动稳定速度，斜下飞行，坠地，悲剧。

内容：为了尽快掌握二级火箭级间分离、二级点火和稳定有关技术，科创航天局将于近期择机发射万户0型二级火箭。,请大家就小型无控火箭级间分离技术、第二级火箭点火技术等，展开讨论，提出意见。

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