搜索 - 科创

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天梯-2发动机项目为登天-4探空火箭的子项目，本次试验为天梯-2发动机的第二次地面试车，本次试验目的如下：1，收集本试验的推力曲线2，验证发动机安全性，可靠性及性能，为登天-4飞行试验做准备3，试验

开伞异常开伞药黑火药不合格有些许明火虽然已经用插花泥隔开但是开伞时仍然有部分明火导致伞绳受损并炸断（图中可看出导致伞绳断开的主要原因并不是灼烧）视频里可以听到发射后很快就传来爆炸声了这是因为火箭发动机工作完后因为惯性火箭会继续飞行一段距离但是速度会大幅度减小又由于惯性导致了水银开关触发火箭并不是飞行到最高点后掉落开伞的这是水银开关的大缺点最终回收失败