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--> <b​oo​gi​e> to word that simply: do i use mechjeb or Kerbal Engineer to figure out the Delta-V of stages
<queqiao--> <e​zs​na​ck​> mj
<queqiao--> <K​ag​a> how do you achieve SRM translunar injections for impact? i am kinda having a hard time getting the trajectories right, most of them miss
<_whitenotifier-4f63> [Skopos] Capkirk123 opened pull request #45: Add missing } - https://github.com/mockingbirdnest/Skopos/pull/45
<_whitenotifier-4f63> [Skopos] Capkirk123 closed pull request #45: Add missing } - https://github.com/mockingbirdnest/Skopos/pull/45
<_whitenotifier-4f63> [Skopos] Capkirk123 tagged db36847 as v1.0.4.0 https://github.com/mockingbirdnest/Skopos/commit/db3684712b44a7dc4f5f3d33fdd1d26a6154756f
<_whitenotifier-4f63> [Skopos] Capkirk123 created tag v1.0.4.0 - https://github.com/mockingbirdnest/Skopos
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<queqiao--> Reply to "K​ag​a: how do you achieve SRM translunar injections for impact? i am kinda having a hard time ge..."
<queqiao--> <m​ak​o> this was an issue in the real world as well. the pioneer probe had retroboosters to correct overshoots
<queqiao--> <m​ak​o> these are in the game btw
<queqiao--> <K​ag​a> Seems interesting, might try to add some later
<queqiao--> <B​ut​ch​er​> If you have to hit then using liquid engines is probably a better bet.
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<queqiao--> <K​ag​a> i think i am punishing myself too hard with this SRM type TLI lol
<queqiao--> <K​ag​a> or am i guaranteed to miss a lot?
<queqiao--> <V​lo​od​> I assume you mean TLI, no lunar orbit insertion
<queqiao--> <V​lo​od​> Higher dv is better, when it comes to variance
<queqiao--> <K​ag​a> so basically ramming speed to the moon?
<queqiao--> <V​lo​od​> I suppose
<queqiao--> <K​ag​a> How do you time the burn right using principia and mechjeb? It sounds like a lot of trial and error or is there a method for it?
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<queqiao--> <k​uz​in​at​0r​> With liquid fuel engines you just click execute and do corrections with rcs
<queqiao--> <e​zs​na​ck​> not when its unguided
<queqiao--> <k​uz​in​at​0r​> Write your own integrator then)
<queqiao--> Reply to "K​ag​a: i think i am punishing myself too hard with this SRM type TLI lol"
<queqiao--> <m​ak​o> It’s quite difficult, and was difficult IRL too. Hence all the early American misses
<queqiao--> <m​ak​o> You’re dealing with a lot of variance
<queqiao--> <K​ag​a> Dw, @ezsnack helped me with the gist of solving the problem :3
<queqiao--> <m​ak​o> It’s a fun problem to solve. Mechjeb underestimates the dV so you need to aim so that you undershoot on the planner
<queqiao--> <m​ak​o> And of course the solid retro boosters work to scrub off speed
<queqiao--> <K​ag​a> Here is my last screenshot in Ez’s dms of the result when doing the TLI burn for lunar impact on the same lunar plane as a test. It works, next time i boot up the PC, ill test it on the inclination of my launchpad https://media.discordapp.net/attachments/480397772248580098/1362179270146789706/image.png?ex=680173ce&is=6800224e&hm=ac770340edf631a2abf1d72b0b5c353417ce6c5ecc2ee41df9bde95ee5cc1a48&