egg changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Germain. We currently target 1.8.1, 1.9.1, 1.10.1, and 1.11.0. <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… | <egg> also 4e16 m * 2^-52 is uncomfortably large
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<discord-> c​ptmiche. — LAN is longitude of ascending node, correct?
<raptop> Yes
<raptop> ...don't give commnet people ideas, though
<discord-> c​ptmiche. — So I want to ask what it's used for, but I think that's getting ahead of myself.
<discord-> c​ptmiche. —
<discord-> c​ptmiche. — Now that I have RO installed, with the axial tilt and lunar inclination involved....
<discord-> c​ptmiche. —
<discord-> c​ptmiche. — Oh god.
<discord-> c​ptmiche. — So I want to ask what it's used for, but I think that's getting ahead of myself.
<discord-> c​ptmiche. —
<discord-> c​ptmiche. — Now that I have RO installed, with Earth's axial tilt and lunar inclination involved....
<discord-> c​ptmiche. —
<discord-> c​ptmiche. — Oh god. (edited)
<discord-> c​ptmiche. — How do I calculate when to launch my rocket for a rendezvous? I know I can wait until the moon reaching an ascending/descending node, but is there another way that doesn't involve tons of extra dV?
<discord-> c​ptmiche. — How do I calculate when to launch my rocket for a rendezvous? I know I can wait until the moon reaches an ascending/descending node, but is there another way that doesn't involve tons of extra dV? (edited)
<discord-> (​experimentalshells?). — rendezvous with the Moon?
<discord-> (​experimentalshells?). — or rendezvous with another spacecraft?
<discord-> (​experimentalshells?). — you need to target both inclination and LAN, in that case
<discord-> c​ptmiche. — sorry, an encounter...
<discord-> c​ptmiche. — I promise I will get better with my terminology as I learn this better
<discord-> c​ptmiche. — I remember someone saying you can't really "launch to plane of target" in Principia.
<discord-> P​aculino (ŝi/ri/she/they). — Telling mechjeb to do that will get you close
<discord-> c​ptmiche. — Even in Principia?
<discord-> P​aculino (ŝi/ri/she/they). — Tell it to target the correct inclination and LAN, and you will be set
<discord-> P​aculino (ŝi/ri/she/they). — You can play with Principia for fine-tuning once in orbit
<discord-> c​ptmiche. — gotcha, thank you!
<discord-> P​aculino (ŝi/ri/she/they). — If you want, you can just worry about getting extremely precise LAN, and not worry about inclination
<discord-> P​aculino (ŝi/ri/she/they). — At least for lunar
<discord-> P​aculino (ŝi/ri/she/they). — Everything else needs correct inclination
<discord-> c​ptmiche. — I'm guessing the closer the moon gets to the ascending/descending nodes, the cheaper the transfer will be?
<discord-> P​aculino (ŝi/ri/she/they). — What transfer are you using?
<discord-> c​ptmiche. — Or well, sorry. cheaper overall it will be
<discord-> P​aculino (ŝi/ri/she/they). — Ballistic, or hoffman?
<discord-> c​ptmiche. — Hoffman
<discord-> c​ptmiche. — (I believe)
<discord-> P​aculino (ŝi/ri/she/they). — When the apparent lunar inclination is nearest the launchsite inclination, then the total delta-V requirements will be lowest, I think
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<discord-> c​ptmiche. — makes sense
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<discord-> l​amont. — longitudeOfAscendingNode = 2.296616161126016
<discord-> l​amont. — use that to match the LAN of the moon and launch due east
<discord-> l​amont. — oh we're in #principia -- you should figure out what the actual LAN of the Moon is
<discord-> (​experimentalshells?). — doesn't moon LAN complete one revolution of 2π every 18.9 years or something?
<discord-> l​amont. — that would put it WAY out of alignment with the ecliptic, and angular momentum would demand something else wobble an awful lot as well
<discord-> l​amont. — nope, its nodal precession just like a sun synchronous satellite, but at least i'm finding that its may be due more to the sun's torque on the earth-moon rather than oblateness but i'm wondering what @egg knows about that
<discord-> l​amont. — and that would mean that launching into the plane of the moon to try to match the plane of the ecliptic would be pretty broken in principia as well...
<discord-> M​arsh. — I hyperedit a craft in orbit to find a good LAN and then modify that based on how many hours away launch is.
<discord-> (​experimentalshells?). — remember that if you're hyperediting, disable Principia by hacking gravity in the debug menu
<discord-> c​ptmiche. — o.0
<discord-> M​arsh. — Correct. If you disable gravity it tells principia to ignore your vessel which lets you edit the crafts orbit using either hyper edit or the cheat menu
<discord-> B​utcher. — Nothing needs exact inclinations, everything needs precise LAN.
<discord-> M​arsh. — You can use just about any inclination with the correct LAN
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<discord-> §​κyℓαr ♀. — ~~whats LAN?~~
<discord-> e​gg. — Ω
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<discord-> §​κyℓαr ♀. — Ah thanks
<discord-> §​κyℓαr ♀. — ☊ is also valid and prolly more technically correct but most fonts have it ugly af
<discord-> e​gg. — nah, ☊ is the node, Ω its latitude (or right ascension)
<discord-> §​κyℓαr ♀. — Ooo, makes sense
<discord-> §​κyℓαr ♀. — Thanks!
<discord-> K​erbinator. — Being one of my Krew ❤️
* discord- e​gg. — stares at the disturbingly stock navball
<discord-> K​erbinator. — lol, that's a stock challenge by BW, so no principi
<discord-> K​erbinator. — lol, that's a stock challenge by BW, so no principia (edited)
<discord-> S​umguy. — Into the trash it goes~
<discord-> K​erbinator. — lmfao
<discord-> A​shnoom. — Is it possible, when doing a rendezvous, to change the flight's reference to the target reference?
<discord-> A​shnoom. — Is it possible, when doing a rendezvous, to change the flight plan's reference to the target reference? (edited)
<_whitenotifier-8975> [Principia] 1275112280 opened issue #2875: How to download previous versions, such as Galileo - https://git.io/JtCDD
<discord-> J​ Bill. — Click the speed indicator above the navball?
<_whitenotifier-8975> [Principia] pleroy commented on issue #2875: How to download previous versions, such as Galileo - https://git.io/JtCHf
<discord-> P​aculino (ŝi/ri/she/they). — But the further you go, the harder it is to get the LAN perfect, so having decent inclination is important
<discord-> B​utcher. — Not really.
<discord-> B​utcher. — I do all my launches from a straight east launch.
<discord-> B​utcher. — Managed to get to Pluto without much messing about.
* raptop will assume that Butcher is 3 gas-core NTRs in a trenchcoat
<discord-> P​aculino (ŝi/ri/she/they). — ^
<discord-> P​aculino (ŝi/ri/she/they). — How many correction burns do you do? Or is your KOS that good?
<raptop> More seriously, I assume that the length of a transfer orbit makes doing plane changes easy
<discord-> B​utcher. — I do very little correction, my kOS is just that good.
<discord-> B​utcher. — I did Saturn with a tangent burn, only correction was for overburn.
<discord-> B​utcher. — I align my parking orbit with the trajectory I want to leave Earth orbit with, so there's no need for plane changes.
<discord-> P​aculino (ŝi/ri/she/they). — What is your launchsite?
<discord-> B​utcher. — That was from Vandenberg, I'm at Mahia now though.
<discord-> P​aculino (ŝi/ri/she/they). — You launched over so many highly populated areas ._.
<discord-> (​experimentalshells?). — you... launched east from Vandenberg? words cannot describe how cursed that is
<discord-> P​aculino (ŝi/ri/she/they). — That's like China, but worse
<discord-> s​iimav. — Surely Butcher launched only into retrograde orbits
<discord-> P​aculino (ŝi/ri/she/they). — Israel does
<discord-> P​aculino (ŝi/ri/she/they). — Has anyone completed a retrograde-only playthrough?
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<_whitenotifier-8975> [Principia] pleroy labeled issue #2875: How to download previous versions, such as Galileo - https://git.io/JtCDD
<discord-> B​utcher. — La can suck it.
<discord-> B​utcher. — One reason for mahia is I'm playing with stricter launch limits this time.
<discord-> P​aculino (ŝi/ri/she/they). — That sounds like how the Soviets felt about STS having abort
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