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Orion Parachute Riser Cutter Development

机译：猎户座降落伞上升器开发

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The parachute assembly is an integral part of the Orion crew module Landing and Recovery System (LRS) and consists of two drogue and three main parachutes. A pyrotechnic cutter is used to sever the drogue parachute riser lines during the terminal descent phase of the mission and the main parachute riser lines shortly after splashdown. An Orion vehicle configuration change required a change on riser material and created an immediate need for a steel riser cutter to be used in the parachute drop tests. The development of this riser cutter with an extremely tight schedule required an accurate analytical and simulation approach to meet the delivery date. An internal ballistic model and a structural explicit hydrodynamic simulation were developed to support the Orion parachute assembly test program.
机译：降落伞组件是猎户座乘员模块着陆和恢复系统（LRS）不可或缺的一部分，它由两个锥子和三个主要降落伞组成。在执行任务的末尾下降阶段，使用烟火切割机切断伞形降落伞上升管，并在降落后​​不久切断主降落伞上升管。 Orion车辆的配置变更要求更换立管材料，并立即需要用于降落伞测试的钢制立管切割机。这种非常严格的立管切割机的开发需要一种精确的分析和模拟方法来满足交货日期。开发了内部弹道模型和结构显式流体动力学仿真，以支持Orion降落伞装配测试程序。

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