UmbralRaptop changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is Fermat. We currently target 1.5.1, 1.6.1, and 1.7.2. <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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<discord-> R​each. — I'll give it after I return to home
<discord-> R​each. — Only have a screenshot now
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<Lynsis> ello
<UmbralRaptop> \o
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<Lynsis> im back, tablet went to sleep on me. i had a question.
<Lynsis> what exactly does principia do? i understand it changes gravity and causes orbits to decay, but reading a bit more there was something about no soi's, and jool system being stable?
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<UmbralRaptop> well, that makes it a bit hard to answer
<discord-> n​eph. — In short, all bodies in the system exert gravitational force on one another. This is unlike the stock patched conics approximation, where only one body exerts force on any other at a time.
<UmbralRaptop> They quit, so I guess we can't explain it
<discord-> n​eph. — An SOI is the region where the body exerts forces. There's no reason for SOIs to exist as they do in stock, because all bodies are always exerting force.
<discord-> n​eph. — oof
<discord-> n​eph. — I always find it alarming when people don't realize just how unrealistic patched conics are
<discord-> n​eph. — Unrelated, but just the way that question was worded really worried me
<discord-> n​eph. — Like how can you not understand gravity???
<UmbralRaptop> You'd be surprised.
<UmbralRaptop> Have you seen The silly ways people suggest faking Lagrange points with SOIs?
<discord-> B​utcher. — How do you fake lagrange points?
<UmbralRaptop> You don't
<UmbralRaptop> More seriously, you have to have weird SOIs that don't have centers of mass inside of them. At least for L1/2/3
<UmbralRaptop> The suggestions for L4/5 make it clear that the suggestors don't realize that Lagrange points are fixed in a rotating reference frame
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<_whitenotifier-5dfc> [Principia] hand0ngmumei starred Principia - https://git.io/fjPLz
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<discord-> e​gg. — @Reach oh interesting, a crash with a crash report, it's been a while since we've had one of those
<discord-> e​gg. — @Reach anyway, we need the crash report
<discord-> e​gg. — @Reach we will also need the info log from that game (it's needed to understand the crash report)
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<discord-> B​utcher. — Umbral, si they want to have fake SOIs so that they can have lagrange points? Wow.
<discord-> B​utcher. — They should just play Principia.
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<discord-> e​gg. — also they are completely missing the point of patched conics: patched conics aren't a magic stopgap, they're an approximation to the behaviour far from perturbations; patched conics near a Lagrange point would be an approximation to nothing sane
<Run1235> using principia for my first time and just left the atmosphere, i'm noticing some projected impact points that are no where near(inside/opposite side of kerbin) my actual impact point. is that an indicator that i did something wrong when installing the mod?
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<Run1235> Hello?
<discord-> S​ir Mortimer. — no, you're good.
<discord-> S​ir Mortimer. — the impact points really just are a reminder that your craft is going to collide with surface.
<discord-> e​gg. — no, it's working fine
<discord-> e​gg. — as @Sir Mortimer said
<discord-> e​gg. — the markers are actually shown when a periapsis would be below sea level, where the periapsis marker would be
<Run1235> ah, okay.
<Run1235> any way to disable it then since i have trajectories?
<discord-> e​gg. — no
<discord-> e​gg. — trajectories won't know about third-body effects, so it's going to be inaccurate at predicting your trajectory when it's not Keplerian
<discord-> e​gg. — note that you can show you trajectory in the surface frame to see approximately where you'll end up
<discord-> e​gg. — note that your/ can show you trajectory in the surface frame to see approximately where you'll end up (edited)
<discord-> e​gg. — note that you can show your trajectory in the surface frame to see approximately where you'll end up (edited)
<Run1235> so, i should jsut remove trajectories then?
<discord-> S​ir Mortimer. — what trajectories does better is predict atmospheric drag. don't know if you need that feature
<_whitenotifier-5dfc> [Principia] pleroy reviewed pull request #2240 commit - https://git.io/fjPla
<_whitenotifier-5dfc> [Principia] pleroy reviewed pull request #2240 commit - https://git.io/fjPlV
<_whitenotifier-5dfc> [Principia] pleroy reviewed pull request #2240 commit - https://git.io/fjPlw
<_whitenotifier-5dfc> [Principia] pleroy labeled pull request #2240: Orbit recurrence - https://git.io/fjiW7
<_whitenotifier-5dfc> [Principia] pleroy opened pull request #2241: A simple solver for Euler's rotation equations - https://git.io/fjP8e
<_whitenotifier-5dfc> [Principia] pleroy synchronize pull request #2241: A simple solver for Euler's rotation equations - https://git.io/fjP8e
<_whitenotifier-5dfc> [Principia] pleroy synchronize pull request #2241: A simple solver for Euler's rotation equations - https://git.io/fjP8e
<_whitenotifier-5dfc> [Principia] Pending. Build queued… - 
<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3738/
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<_whitenotifier-5dfc> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3738/
<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3739/
<_whitenotifier-5dfc> [Principia] pleroy commented on pull request #2241: A simple solver for Euler's rotation equations - https://git.io/fjP83
<_whitenotifier-5dfc> [Principia] pleroy commented on pull request #2240: Orbit recurrence - https://git.io/fjP8s
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<_whitenotifier-5dfc> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3739/
<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3740/
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<_whitenotifier-5dfc> [Principia] Failure. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3740/
<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3741/
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<_whitenotifier-5dfc> [Principia] pleroy synchronize pull request #2241: A simple solver for Euler's rotation equations - https://git.io/fjP8e
<_whitenotifier-5dfc> [Principia] Pending. Build queued… - 
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<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3742/
<_whitenotifier-5dfc> [Principia] eggrobin reviewed pull request #2241 commit - https://git.io/fjP4G
<_whitenotifier-5dfc> [Principia] eggrobin labeled pull request #2241: A simple solver for Euler's rotation equations - https://git.io/fjP8e
<_whitenotifier-5dfc> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3742/
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<_whitenotifier-5dfc> [Principia] eggrobin synchronize pull request #2240: Orbit recurrence - https://git.io/fjiW7
<_whitenotifier-5dfc> [Principia] Pending. Build queued… - 
<_whitenotifier-5dfc> [Principia] Pending. Building… - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3743/
<_whitenotifier-5dfc> [Principia] Success. Build finished. - http://casanova.westeurope.cloudapp.azure.com:8080/job/Principia/3743/
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