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…
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<queqiao->
⟨clayel⟩ i wonder if anyone has tried ballistic capture to get moon orbit really early in rp-1?
<queqiao->
⟨clayel⟩ dont need a capture stage
<queqiao->
⟨clayel⟩ * stage, deep space avionics... etc.
<queqiao->
⟨lpg4999⟩ but need to survive a whole lot longer, which translates into more mass than a lightweight capture stage. specifically for "get moon orbit really early in rp-1", it's a bad plan
<queqiao->
⟨lpg4999⟩ (for showing off noodles, it's a great plan)
<queqiao->
⟨clayel⟩ ah, do you need ec for the contract?
<queqiao->
⟨lpg4999⟩ you need to transmit science
<queqiao->
⟨lpg4999⟩ and even without that, the extra fuel mass needed for the more expensive TLI probaby ends up higher than the extra mass involved in carrying the sort of tiny capture stage it's replacing
<queqiao->
⟨test_account9540⟩ You also need deep space avionics which ruins the idea of doing it early
<queqiao->
⟨Mudkip | 𒀱 observer⟩ Is there a way to get mechjeb to execute principia maneuvers better
<queqiao->
⟨Mudkip | 𒀱 observer⟩ it does the burn but the real course is wayy off from what was predicted
<queqiao->
⟨lpg4999⟩ it's not the dv savings that makes it appealing (especially here where we just happily aerocapture); it's the alleged greater freedom from the 26-month window
<raptop>
Apparently one of the authors has done a fair amount at looking at ballistic captures