星舰原型SN15着陆成功,这一次是真的…

星舰StarShip原型SN15完整地完成了测试,包括一直没有成功的着陆动作。

StarShip SN15测试完整过程 Credit:@TrevorMahlmann
正式测试前矗立的StarShip SN15 Credit: @NASASpaceflight

下落过程中,两个Raptor发动机着陆点火(Landing Burn)成功,发动机矢量推力的角度动态调整,结合舰体的RCS(Reaction Control System,反应控制系统或反作用喷流控制系统)调整姿态,星舰SN15实现了平稳软着陆。

credit: @Erdayastronaut

星舰着陆后,尾部有明火燃烧。随后传来消息说明火已被扑灭,没有发生如SN10一样的着陆后爆炸

Elon随即发消息说,’Starship landing nominal!‘,这次星舰是真得着陆了。BTW,nominal算是个航空航天术语,指在预设的可接受限制条件下,达到预期目标

nominal — Aerospace
performing or achieved within expected, acceptable limits;
normal and satisfactory;

—Source: What does ‘nominal’ mean when Spacex mission control says it?

SN15软着陆后,小短腿有些损坏,看来“软”的程度不够。在后续测试中,着陆的各种参数,例如着陆时发动机推力和角度等,定会根据着陆情况持续优化。

正如SpaceX软件团队如下所言,测试过程中获取的“成吨”的数据极具价值,为后续改进提供数据支撑:

Even operations that are in developmental testing provide critical data. “When Starship SN15 had a hard (and exciting!) landing, people assumed we would be unhappy, but we were celebrating,” says Madonia. “We did so many successful maneuvers and we were able to gather a ton of valuable data to improve our next attempt.”

Building the software that helps build SpaceX

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