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->
⟨.auer⟩ why the purple line gets short from the periapsis node of the transfer?
<queqiao->
⟨Al₂Me₆⟩ That’s the prediction, which is computed separately from the flight plan. Go to the main window and increase the max step count there.
<queqiao->
⟨.auer⟩ ⟪Al₂Me₆⟫ That’s the prediction, which is […] ⮪ 👍
<queqiao->
⟨.auer⟩ ahm...got a massive difference with the prediction ....not sure why
<queqiao->
⟨Al₂Me₆⟩ That's to be expected. A minute difference in Δv at this stage will result in the above. Hence correction burns.
<queqiao->
⟨.auer⟩ well, I´m not so far from the results I had doing it before with the wrong approach to frames and all
_whitelogger has joined #principia
<queqiao->
⟨_heapass⟩ Asking again because I never got an answer, hope that's ok.
<queqiao->
I'm new to Principia, can anyone give me advice for planning reentry from beyond LEO? I used to rely on the Trajectories mod, but it seems that it only really works with the stock patched conics physics.
<queqiao->
⟨drveyl⟩ You can use a reference frame where the surface is fixed to put your landing near there.
<queqiao->
If you also want to plan for aerodynamic forces (ie drag during reentry) having a significant effect, I'm not sure how to get there. Principia won't account that. You can possibly get some use out of trajectories once the patched conic form of the return is close enough to principia reality.
<queqiao->
⟨test_account9540⟩ Also reeentries from beyond LEO tend to be lifting and I'm not sure trajectories or anything else can plan that?
<queqiao->
⟨the rocket science kid⟩ well in stock, it can predict spaceplane reentries so it probably simulates lift to some degree?
<queqiao->
⟨test_account9540⟩ to some degree, maybe
<queqiao->
⟨blothorn⟩ I recall it not handling FAR well, although that may have changed in subsequent years.