egg changed the topic of #principia to: Logs: https://esper.irclog.whitequark.org/principia | <scott_manley> anyone that doubts the wisdom of retrograde bop needs to get the hell out | https://xkcd.com/323/ | <egg> calculating the influence of lamont on Pluto is a bit silly…
<queqiao->
⟨K8-zhouziheng⟩ hello,how to get a l2 halo orbit?
<queqiao->
⟨Quadrupole⟩ Get a lunar flyby. Do a small retrograde burn but not to capture. See your trajectory start to curl. Tune the flyby and burn from there.
<queqiao->
⟨K8-zhouziheng⟩ but it is not a halo orbit,it is just a plane orbit.
<queqiao->
⟨Quadrupole⟩ Make your flyby inclined
<queqiao->
⟨K8-zhouziheng⟩ how to do that?
<queqiao->
⟨Quadrupole⟩ Just don't pass directly above moon's equator at perilune
<queqiao->
⟨Quadrupole⟩ Just don't pass directly along the moon's equator for the flyby
<queqiao->
⟨K8-zhouziheng⟩ Is it OK to be perpendicular to the equator of the moon？
<queqiao->
⟨Quadrupole⟩ Personally I find 20-degree flyby suffices.
<queqiao->
⟨K8-zhouziheng⟩ Thank you very much.
_whitelogger has joined #principia
<queqiao->
⟨egg⟩ *Windows-only* test build with a slightly different implementation of the rigid body rotation stuff; please try it out and see if things spin weirdly. Save-compatible both ways. https://bit.ly/3xGOsJJ