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->
⟨makoivis⟩ yay, first moon encounter plotted
<queqiao->
⟨makoivis⟩ now actually flying it was a bit trickier, but this is fun!
<queqiao->
⟨makoivis⟩ next up doing it outside of sim
<queqiao->
⟨lpg4999⟩ "trickier"?
<queqiao->
⟨makoivis⟩ as in not as easy as merely plotting it
<queqiao->
⟨makoivis⟩ especially since the estimated burn duration is off by a factor of two
<queqiao->
⟨makoivis⟩ either way there's a learning curve but it's a fun learning curve
<queqiao->
⟨lpg4999⟩ "the estimated burn duration is off by a factor of two" is not a thing that should happen, user error aside
<queqiao->
⟨lpg4999⟩ in this case, the user error is probably related to those solids
<queqiao->
⟨makoivis⟩ ah the solids are just separation engines
<queqiao->
⟨makoivis⟩ * motors
<queqiao->
⟨makoivis⟩ hmm. what's the best practice re: separation motors?
<queqiao->
⟨makoivis⟩ I suspect you may be on to something there, that could easily throw it off
<queqiao->
⟨lpg4999⟩ not having any, mostly. not bringing them with you, at least
<queqiao->
⟨makoivis⟩ what's the best practice for not bringing them with you? 🙂
<queqiao->
⟨lpg4999⟩ a decoupler
<queqiao->
⟨makoivis⟩ seems a bit inelegant but I'll try it.
<queqiao->
⟨lpg4999⟩ saturnv-style sepmotors-on-skirt are fun
<queqiao->
⟨makoivis⟩ that sounds less inelegant 😛 but I'll try some stuff out.
<queqiao->
⟨makoivis⟩ I'll try that tomorrow.
<queqiao->
⟨lpg4999⟩ anyway I don't actually know how principia would deal with 'there's these activated, spent SRBs on the stage being used for the plotting', but it wouldn't surprise me if they threw off all the maths
<queqiao->
⟨lpg4999⟩ since all the maths is based on the "currently active" engines
<queqiao->
⟨Al₂Me₆⟩ Yeah I don't think Principia understands ignitions, and those solids are not out of fuel as far as the game itself is concerned.
<queqiao->
⟨lpg4999⟩ I've occasionaly wished for some sort of "don't guess, let me tell you what's going to happen" sort of alternate UI (say, input dry mass, wet mass and burn duration), but I haven't thought about it enough to have a good sense of how bad an idea it would be
<queqiao->
⟨lamont⟩ just get the terminal orbit information out of principia and into MJ and let closed loop guidance find the best finite burn solution
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<queqiao->
⟨makoivis⟩ lpg4999 you were correct about separation motors being the issue for calculating the wrong burn duration. tyvm!
<queqiao->
⟨makoivis⟩ also yay, first lunar impact on the first try (after removing the separation motors)
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<queqiao->
⟨quattrorumbass⟩ this is the dedicated cat channel right?
<queqiao->
⟨makoivis⟩ Any tips on interplanetary transfers? How can I get a reasonable starting point to fine-tune? What plotting frame should I use?
<queqiao->
⟨siimav⟩ TWP should give a _reasonable starting point_.
<queqiao->
⟨robbibi_⟩ transfer window planner fork* yeah
<queqiao->
⟨robbibi_⟩ (since that's the version you should be using at all times)