raptop changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Gateaux. We currently target 1.8.1, 1.9.1, and 1.10.1. <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-> M​iksu. — which one do i download for 1.8.1
<discord-> [​experimentalshells?]. — latest release Гельфанд is compatible with 1.8+
<discord-> [​experimentalshells?]. — https://github.com/mockingbirdnest/Principia/wiki/Change-Log#%D0%93%D0%B5%D0%BB%D1%8C%D1%84%D0%B0%D0%BD%D0%B4
<discord-> M​iksu. — principia гельфанд for 1.10.1.zip
<discord-> M​iksu. — is it this?
<discord-> [​experimentalshells?]. — seems so
<discord-> M​iksu. — i pressed the one that says for 1.8.1, 1.9.1, and 1.10.1.
<discord-> M​iksu. — but then it goes to principia гельфанд for 1.10.1.zip
<discord-> [​experimentalshells?]. — should be the correct one
<discord-> M​iksu. — ok thanks 🙂
<discord-> M​iksu. — why does principia change the navball?
<discord-> D​amien. — because the navball changes orientation to fit the reference frame. the different colours help you know what frame you're in
<discord-> M​iksu. — ooh ok thanks
<discord-> M​iksu. — is this normal?
<discord-> [​experimentalshells?]. — what reference frame are you using?
<discord-> M​iksu. — i dont know
<discord-> D​amien. — yes. the default reference frame doesn't make much sense when you first load
<discord-> M​iksu. — i just went to map mode
<discord-> [​experimentalshells?]. — open Principia window
<discord-> [​experimentalshells?]. — And screenshot pls
<discord-> D​amien. — @Miksu get used to thinking about things in reference frames. an earth centered frame looks fine from earth. the moon spins round it etc. that frame doesn't make much sense if your camera is focused on the sun
<discord-> D​amien. — for that you'd need a sun centered frame
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<discord-> e​gg. — @Miksu read the concepts page
<discord-> D​amien. — for each body you also have various frames that do different things. a geostationary sat's orbit around earth looks like a circle when viewed in an earth centred inertial (everything including earth spins around an imaginary point at the centre of earth) frame. switch to earth centred surface fixed (earth doesn't spin in this frame) and that geosat orbit looks appears to wobble in place over the su
<discord-> D​amien. — for each body you also have various frames that do different things. a geostationary sat's orbit around earth looks like a circle when viewed in an earth centred inertial (everything including earth spins around an imaginary point at the centre of earth) frame. switch to earth centred surface fixed (earth doesn't spin in this frame) and that geosat orbit appears to wobble in place over the surface
<discord-> D​amien. — and yeah what egg said
<discord-> M​iksu. — is this normal?
<discord-> e​gg. — yes, and try maybe looking at the UI otherwise you have no idea what you are looking at
<discord-> M​iksu. — ok thanks
<discord-> S​tandecco. — nice, lines
<discord-> e​gg. — @experimentalshells told you that already; you need to look at the Principia window, it tells you what you are looking at
<discord-> S​tandecco. — I like lines
<discord-> e​gg. — they’re good lines
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<discord-> S​tandecco. — currently grinding surface integrals and Stoke's theorem, lots of lines there
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<_whitenotifier-8975> [Principia] eggrobin commented on issue #2811: Crash while descending towards the surface of a body - https://git.io/JIwtn
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<UmbralDrone> have I linked this here? https://arxiv.org/pdf/2012.04116.pdf
<UmbralDrone> An average transfer time of 195.63 days is deeply dissapointing though
<discord-> B​utcher. — 195 days doesn't seem that fast
<UmbralDrone> ion engines: not magic
<discord-> B​utcher. — Oh it's ion engines.
<UmbralDrone> Various constant accelleration trajectories ranging from 9.8e-4 m/s² to 10.2e-4 m/s²