找到了:
During the first day, we will execute the first and most important trajectory correction maneuver using small rocket engines aboard Webb itself.
望远镜带了一个小火箭来修正轨道.
来源:https://webb.nasa.gov/content/about/orbit.html
然后我还找到一张图,它的 steering 里有那个 reaction wheels 和 jets,但这图里没有标 rocket engines,那到时候还再分离一次 rocket engines 吗?
https://youtu.be/aICaAEXDJQQ
The Insane Engineering of James Webb
最关键的那个 cryocooler 没有看懂