好奇号 的尺寸使之能在火星复杂表面安全着陆。以前,漫游者打开降落伞减慢下降速度,在撞向地面时用安全气囊缓冲。 好奇号 大到这样的方法不能起作用。相反地,NASA希望利用一种精巧的被称为 天空起重机 的装置使其在火星着陆。
As with the other rovers, Curiosity s mother ship will rely on heat shields and air-resistance,and then on a parachute, to slow its arrival. But at an altitude of 1.6km a specially designeddescent stage bearing the rover will drop away from this vehicle. The descent stage haseight rocket motors on its corners. These will slow its fall to a relatively sedate 0.75 metresa second. When it is about 20 metres above the surface, the rover will be lowered from it onwires and deposited gently onto the Martian landscape. The cables will then be cut withexplosives, the descent stage will fly off and crash land elsewhere, and Curiosity will begin itsmission.
像其它几个漫游者一样, 好奇号 的母船将依靠隔热、耐大气摩擦的防护层,然后通过降落伞减速。但在1600米高时,一个特别设计的背负着漫游者的下降台从母船脱落,下降台的四角有8个火箭发动机,这些发动机把速度降到相对缓慢的0.75米/秒。离地约20米时,它将绑在线缆上的漫游者放下去,轻轻地在火星着陆。之后这些线缆将通过爆破切断,下降台飞走并在其它地方坠毁, 好奇号 开始它的任务。
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