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Flight Reconstruction of the Mars Pathfinder Disk-Gap-Band Parachute Drag Coefficients

机译:火星探路者磁盘间隙带降落伞阻力系数的飞行重构

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摘要

On 4 July 1997, the Mars Pathfinder (MPF) mission successfully landed on Mars. The entry, descent, and landing (EDL) scenario employed the use of a disk-gap-band parachute design to decelerate the Lander. Flight reconstruction of the entry using MPF flight accelerometer data revealed that the MPF parachute decelerated slower than predicted. In the summer of 2003, the Mars Exploration Rover (MER) mission sent two Landers to the surface of Mars arriving in January 2004. The MER mission uses a similar EDL scenario and parachute design to that employed by MPF. As a result, characterizing the degree of underperformance of the MPF parachute system is critical for the MER EDL trajectory design. An overview of the methodology used to estimate the MPF parachute drag coefficient as experienced on Mars is provided.
机译:1997年7月4日,火星探路者(MPF)任务成功降落在火星上。进入,下降和着陆(EDL)方案使用了磁盘间隙带降落伞设计来使Lander减速。使用MPF飞行加速计数据对条目进行的飞行重建显示,MPF降落伞的减速速度比预期的慢。 2003年夏天,火星探索漫游者(MER)任务将两架登陆器送至2004年1月抵达的火星表面。MER任务使用与MPF相似的EDL方案和降落伞设计。结果,表征MPF降落伞系统的性能不足对于MER EDL轨迹设计至关重要。提供了用于估算火星上MPF降落伞阻力系数的方法的概述。

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