raptop changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Fréchet. We currently target 1.5.1, 1.6.1, and 1.7.x. <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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<_whitenotifier-d13c> [Principia] CZ-81H-YZ5Block5 commented on issue #2548: KSP Loading Issue - https://git.io/JfmJ3
<_whitenotifier-d13c> [Principia] CZ-81H-YZ5Block5 commented on issue #2548: KSP Loading Issue - https://git.io/JfmJl
<_whitenotifier-d13c> [Principia] erplsf starred Principia - https://git.io/JfmUs
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<discord-_> m​oar ssto. — Do you assumed that the shape of Mesbin is already known?
<discord-_> m​oar ssto. — Did you assume that the shape of Mesbin is already known? (edited)
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<_whitenotifier-d13c> [Principia] eggrobin commented on issue #2548: KSP Loading Issue - https://git.io/JfmKg
<_whitenotifier-d13c> [Principia] eggrobin commented on issue #2548: KSP Loading Issue - https://git.io/JfmKa
<_whitenotifier-d13c> [Principia] pleroy commented on issue #2548: KSP Loading Issue - https://git.io/Jfm6k
<_whitenotifier-d13c> [Principia] pleroy opened pull request #2549: Detect non-ASCII paths as they confuse Mono - https://git.io/Jfm6Q
<_whitenotifier-d13c> [Principia] pleroy edited pull request #2549: Detect non-ASCII paths as they confuse Mono - https://git.io/Jfm6Q
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<discord-_> A​ndrew Chen. — small question about the moon's orbit around earth:
<discord-_> A​ndrew Chen. — does this mean that the moon's inclination relative to earth's equatorial plane varies between 18.5 and 28.5deg?
<discord-_> l​pg. — correct
<discord-_> l​pg. — over ~18 years
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<_whitenotifier-d13c> [Principia] eggrobin labeled pull request #2549: Detect non-ASCII paths as they confuse Mono - https://git.io/Jfm6Q
<_whitenotifier-d13c> [Principia] Pending. Build queued… - 
<_whitenotifier-d13c> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4248/
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<_whitenotifier-d13c> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/4248/
<_whitenotifier-d13c> [Principia] pleroy labeled issue #2548: KSP Loading Issue - https://git.io/JfqmD
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<_whitenotifier-d13c> [Principia] pleroy closed pull request #2549: Detect non-ASCII paths as they confuse Mono - https://git.io/Jfm6Q
<_whitenotifier-d13c> [Principia] pleroy pushed 2 commits to master [+0/-0/±2] https://git.io/Jfm1u
<_whitenotifier-d13c> [Principia] pleroy e75296f - Detect non-ASCII paths as they confuse Mono.
<_whitenotifier-d13c> [Principia] pleroy 1f1ca24 - Merge pull request #2549 from pleroy/2548 Detect non-ASCII paths as they confuse Mono
<discord-_> F​alcon. — how do you find the bimonthly launch window for a launch site btw?
<discord-_> F​alcon. — to the moon
<discord-_> F​alcon. — should have said that... lol
<discord-_> l​pg. — my current technique: go to tracking station, set up an overhead view with the moon's An/Dn at top and bottom. wait for moon to be ~4d _from_ An/Dn. then wait for KSC to be 90 degrees off (so a launch will cross the equator at the moon An/Dn)
<discord-_> F​alcon. — 4 days or degrees? for the "wait for the moon to be 4d from An/Dn" im assuming days
<discord-_> F​alcon. — and how do i get it to show the An/Dn in tracking station through principias window?
<discord-_> l​pg. — days
<discord-_> F​alcon. — should i be in moon centered or earth centered btw?
<discord-_> l​pg. — for this, earth centered. The way I set up the An/Dn position: line up a sideways view of the Earth so the equator is horizontal, then rotate to overhead view
<discord-_> l​pg. — currently I happen to have a geostationary-sat contract available, which draws me a very convenient equatorial line
<discord-_> B​utcher. — How do you deal with the moon being at 18.5° inclination?
<discord-_> F​alcon. — like this in a way?
<discord-_> B​utcher. — Just pay the cost?
<discord-_> l​pg. — no cost for ejecting; that's the point of aiming for An/Dn. capture cost has been negligible
<discord-_> l​pg. — Yes, that looks about right. (I'd be zoomed in a lot more)
<discord-_> F​alcon. — so i lined up the plane of the moon over the An/Dn im pretty sure at least....
<discord-_> F​alcon. — i just rotated my pov around the earth until i was looking straight on at the plane of the moon, with the geostationary orbit contract thing intersecting in the middle
<discord-_> F​alcon. — so now i zoom in, wait for the moon to get about 4 days out from one of those two points, and then launch at 90 degrees from said point, due east
<discord-_> F​alcon. — +90 degrees or -90 degrees btw?
<discord-_> l​pg. — doesn't matter, will only determine coast time
<discord-_> F​alcon. — as in, 90 degrees before the earth rotates over that point? or 90 degrees after?
<discord-_> l​pg. — either way you'll cross the equator at the same 2 places
<discord-_> l​pg. — It does have an impact on how you arrive at the moon, but that's something you can experiment with
<discord-_> F​alcon. — okay, and how do i know exactly when the moon is about 4 days out?
<discord-_> F​alcon. — from the An or Dn?
<discord-_> l​pg. — eyeball it. 7d is a quarter orbit
<discord-_> B​utcher. — > no cost for ejecting; that's the point of aiming for An/Dn. capture cost has been negligible
<discord-_> B​utcher. — @lpg oh yeah, duh.
<discord-_> F​alcon. — how do i see that if i am looking face on?
<discord-_> F​alcon. — would be rather hard, no?
<discord-_> l​pg. — that's why I said overhead view
<discord-_> F​alcon. — i couldnt line it up equatorial without this view though? im missing something arent I
<discord-_> l​pg. — that's why I said you rotate after
<discord-_> F​alcon. — rotate directly up after you line it up?
<discord-_> l​pg. — yup
<discord-_> B​utcher. — What's dv for a typical tli like this?
<discord-_> l​pg. — I've gotten fairly consistent 3140ish
<discord-_> F​alcon. — i always do about 3150
<discord-_> F​alcon. — yeah
<discord-_> F​alcon. — and is there keybindings to move around in map mode btw?
<discord-_> B​utcher. — Hmm, so my polar launches cost me about 200 extra.
<discord-_> F​alcon. — because i feel like the mouse is too inaccurate
<discord-_> F​alcon. — yeah, and you add on another 500 or so
<discord-_> F​alcon. — because you arent using the rotation of the earth to help launch
<discord-_> l​pg. — I only used the keyboard, but couldn't tell you _what_ keys I use
<discord-_> B​utcher. — That's what the 200 is.
<discord-_> l​pg. — arrows or wasd
<discord-_> F​alcon. — should be more
<discord-_> B​utcher. — 12500 is launch to moon intercept dv.
<discord-_> l​pg. — from polar-ish parking orbit is also in the 3150 ranch
<discord-_> B​utcher. — Assuming around 9200 for launch to LEO easterly that's 12350 for launch to moon intercept.
<discord-_> l​pg. — from polar-ish parking orbit is also in the 3150 range (edited)
<discord-_> F​alcon. — dang, well you did well then Butcher
<discord-_> l​pg. — direct ascent is a different story I haven't attempted
<discord-_> F​alcon. — any way to lower the sensitivity on a keyboard for that?
<discord-_> F​alcon. — lol
<discord-_> l​pg. — god I wish
<discord-_> B​utcher. — Maximum gain from easterly launch is about 400 m/s.
<discord-_> F​alcon. — one key push does this much
<discord-_> F​alcon. — xD
<discord-_> F​alcon. — I hate to keep flooding this channel with screenshots, but would you say this is 4 days? assuming that the top of the screen is the An point?
<discord-_> l​pg. — looks like the right ballpark, but that orbit seems weirdly off-center
<discord-_> B​utcher. — It's around 50°
<discord-_> l​pg. — it doesn't need to be especially precise, you'll still have to advance time to get one of the 2 daily launch times anyway. There's no particular science to the number other than "a transfer will usually take 3-4 days" anyway
<discord-_> F​alcon. — alrighty, and launch here?
<discord-_> F​alcon. — 90 degrees away from directly under the an/dn
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<discord-_> F​alcon. — another question i guess, if i am trying to rendezvous with a spacecraft in the orbit of another body, which "body" centered option is best?
<discord-_> e​gg. — If you are trying to rendez-vous with a spacecraft, you want the target frame honestly