#principia on 2020-01-04 — irc logs at esper.irclog.whitequark.org

2019-12-26 20:29 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

00:11 <discord-_> RurouniDonut. — Whats a good way to find a slow impact trajectory?

00:12 <discord-_> RurouniDonut. — I’m trying to do a landing with Surveyor and this last mission took 5 days to get there but was still going too fast

00:13 Novles has joined #principia

00:15 <discord-_> neph. — I believe the slowest way is to get into low orbit and then drop your periapsis

00:15 <discord-_> neph. — Direct descent will inevitably be faster

00:19 <discord-_> RurouniDonut. — Well, currently I only Surveyor thats capable of landing atm

00:36 <discord-_> Butcher. — Something like a free return trajectory that just clips the terrain maybe?

00:36 <discord-_> Butcher. — Use gravity to you advantage.

00:47 <discord-_> Acer_Saccharum. — I know there ought to be a fancy n-body trajectory that beats a simple free return flyby

00:48 <discord-_> Acer_Saccharum. — Maybe something like a ballistic capture

00:48 <discord-_> Acer_Saccharum. — this is #principia after all

00:49 <UmbralRaptop> technically a free return is eggsploiting n-body physics

00:50 <UmbralRaptop> launching into a surface grazing flyby can minimize overall ΔV, but increases the ΔV and TWR requirements for the final burn

00:53 <discord-_> Acer_Saccharum. — You can do what amounts to a free return with patched conics though

00:54 <UmbralRaptop> well, yes

01:52 <discord-_> Damien. — @Acer_Saccharum

01:52 <discord-_> Damien. — https://cdn.discordapp.com/attachments/480397772248580098/662835747241590794/screenshot132.png

01:52 <discord-_> Damien. — https://cdn.discordapp.com/attachments/480397772248580098/662835748537368586/screenshot89-1.png

01:52 <discord-_> Damien. — Try one of these

01:53 <discord-_> Damien. — https://cdn.discordapp.com/attachments/480397772248580098/662836021699805184/unknown-30.png

01:53 <discord-_> Acer_Saccharum. — I've seen things like that before

01:54 <discord-_> Acer_Saccharum. — I think maccollo has a video on that

01:54 <discord-_> Acer_Saccharum. — along with the infamous 🟪 orbit

01:54 <discord-_> Damien. — Yeah I think he does

01:56 <discord-_> Acer_Saccharum. — that makes me wonder, has anyone seen the square orbit in RSS

01:56 <discord-_> Acer_Saccharum. — I twager it must exist in all planet-moon pairings

01:56 <discord-_> Acer_Saccharum. — that makes me wonder, has anyone seen the square orbit in RSS?

01:56 <discord-_> Acer_Saccharum. — I wager it must exist in all planet-moon pairings (edited)

01:56 <discord-_> Damien. — Yeah it can be done in rss

01:57 <discord-_> Damien. — I've done it at earth/moon at least

01:57 <discord-_> Acer_Saccharum. — now the next part of my question is, are all regular polygons possible?

01:58 <discord-_> Acer_Saccharum. — I'd think they should be

01:58 <discord-_> Damien. — I accidentally made a star once but didn't fully execute the plan because I wanted a square

01:59 <discord-_> Damien. — It was a star of David type thing

01:59 <discord-_> Acer_Saccharum. — it couldn't be 6-2 (star of david)

01:59 <discord-_> Acer_Saccharum. — but it could have been 7-2

01:59 <discord-_> Acer_Saccharum. — https://upload.wikimedia.org/wikipedia/commons/thumb/2/2b/Regular_star_polygon_7-2.svg/2000px-Regular_star_polygon_7-2.svg.png

02:00 <discord-_> Damien. — Yeah that's the one

02:00 <discord-_> Acer_Saccharum. — 6-2 is two disconnected triangles

02:00 <discord-_> Damien. — Ah

02:00 <discord-_> Acer_Saccharum. — if you had two satellites you could make it

02:00 <discord-_> Acer_Saccharum. — come on SpaceIL

02:00 <discord-_> Acer_Saccharum. — make it real

02:01 <discord-_> neph. — https://cdn.discordapp.com/attachments/480397772248580098/662837919265849350/Regular_star_polygons.svg.png

02:01 <discord-_> neph. — Coprime star polygons

02:01 <discord-_> Acer_Saccharum. — 7/2 and 8/3 are totally the best

02:22 egg|anbo|egg has quit [Remote host closed the connection]

02:26 <egg|cell|egg> Kerbal Symmetry Groups

02:54 egg|cell|egg has quit [Ping timeout: 198 seconds]

02:56 egg|cell|egg has joined #principia

03:17 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/662857121083162645/screenshot108.png

03:17 <discord-_> Acer_Saccharum. — no idea how much sharper I can make the triangle

03:22 <discord-_> Acer_Saccharum. — my goal is the ✡️

03:22 <discord-_> Acer_Saccharum. — I brought along a second satellite to see what can be done

03:24 <discord-_> Damien. — https://cdn.discordapp.com/attachments/480397772248580098/662858982964068381/screenshot131.png

03:24 <discord-_> Damien. — https://cdn.discordapp.com/attachments/480397772248580098/662858986734747649/screenshot132-1.png

03:25 <discord-_> Acer_Saccharum. — it's so dang fiddly

03:25 <discord-_> Damien. — I just found these from when I last attempted it

03:26 <discord-_> Damien. — The issue was starting the 2nd burn slightly too early

03:27 <discord-_> Damien. — Starting it later let me fix it and do the square

03:30 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/662860353058897936/screenshot111.png

03:52 <discord-_> neph. — @Zavian About halfway down the page is the paragraph you want: https://science.nasa.gov/science-news/science-at-nasa/2006/06nov_loworbit/

03:53 <discord-_> Acer_Saccharum. — getting there

03:53 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/662866127709405219/screenshot114.png

03:57 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/662867274335780864/screenshot121.png

03:58 <discord-_> Zavian. — Yeah, I was aware that there are very few stable lunar orbits in the real world. Cool if principia models the uneven mass distributions, but even if it doesn't I wouldn't expect the orbit I have used to be stable. (But hey I only want 90 days of science gathering, after that I don't really care. but overall, principia is another thing I would need to learn to use, and given my limited time avail

03:58 <discord-_> lpg. — principia does do mascons

04:02 <discord-_> neph. — principia allows you do say the Six Words

04:02 <discord-_> neph. — principia allows you to say the Six Words at NASA (edited)

05:01 Mike` has quit [Ping timeout: 204 seconds]

05:07 Mike` has joined #principia

05:38 egg|cell|egg has quit [Ping timeout: 189 seconds]

05:41 egg|cell|egg has joined #principia

05:46 egg|cell|egg has quit [Ping timeout: 189 seconds]

05:48 egg|cell|egg has joined #principia

06:50 UmbralRaptop has quit [Remote host closed the connection]

06:50 UmbralRaptop has joined #principia

10:08 egg|cell|egg has quit [Read error: Connection reset by peer]

10:08 egg|cell|egg has joined #principia

10:17 egg|cell|egg has quit [Ping timeout: 190 seconds]

10:17 egg|cell|egg has joined #principia

10:22 egg|cell|egg has quit [Ping timeout: 189 seconds]

10:23 egg|cell|egg has joined #principia

10:27 <discord-_> egg. — @Acer_Saccharum what does it look like in an earth moon rotating frame?

10:29 egg|anbo|egg has joined #principia

10:31 Webchat974 has joined #principia

10:37 Webchat974 has quit [Quit: webchat.esper.net]

10:47 egg|anbo|egg has quit [Remote host closed the connection]

10:50 egg|anbo|egg has joined #principia

12:06 egg|anbo|egg has quit [Remote host closed the connection]

12:15 UmbralRaptop has quit [Remote host closed the connection]

12:16 UmbralRaptop has joined #principia

12:22 egg|anbo|egg has joined #principia

13:01 egg|anbo|egg has quit [Remote host closed the connection]

13:33 egg|cell|egg has quit [Ping timeout: 198 seconds]

13:33 egg|cell|egg has joined #principia

15:21 egg|anbo|egg has joined #principia

15:33 <discord-_> Acer_Saccharum. — the rotating reference frames make it look like various nephroid or bean-like shapes

15:35 <discord-_> Acer_Saccharum. — in ECMA it looks similar to the orbit of cruithne in SCEA

15:35 <discord-_> Acer_Saccharum. — https://upload.wikimedia.org/wikipedia/commons/c/c7/Horseshoe_orbit_of_Cruithne_from_the_perspective_of_Earth.gif

15:35 <discord-_> Acer_Saccharum. — but in this case it makes a smaller bean shape around the moon

15:37 egg|cell|egg has quit [Ping timeout: 190 seconds]

15:37 egg|cell|egg has joined #principia

15:37 <discord-_> Acer_Saccharum. — but in this case it makes a smaller and less concave bean shape around the moon (edited)

15:45 egg|anbo|egg has quit [Remote host closed the connection]

15:46 egg|anbo|egg has joined #principia

15:49 egg|anbo|egg has quit [Remote host closed the connection]

15:49 <discord-_> Acer_Saccharum. — sorry about the msPaint

15:49 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/663046256431464449/triangle_ECMA_sketch.png

16:07 egg|anbo|egg has joined #principia

16:10 egg|cell|egg has quit [Ping timeout: 378 seconds]

16:11 egg|cell|egg has joined #principia

16:27 egg|cell|egg has quit [Ping timeout: 190 seconds]

16:27 egg|cell|egg has joined #principia

16:38 egg|cell|egg has quit [Ping timeout: 190 seconds]

16:40 egg|cell|egg has joined #principia

16:45 egg|anbo|egg has quit [Ping timeout: 190 seconds]

16:47 egg|anbo|egg has joined #principia

16:50 egg|cell|egg has quit [Ping timeout: 190 seconds]

16:51 egg|cell|egg has joined #principia

16:54 egg|anbo|egg has quit [Ping timeout: 378 seconds]

17:10 egg|cell|egg has quit [Ping timeout: 190 seconds]

17:10 egg|cell|egg has joined #principia

17:23 egg|cell|egg has quit [Ping timeout: 189 seconds]

17:28 egg|anbo|egg has joined #principia

17:29 egg|cell|egg has joined #principia

17:35 egg|cell|egg has quit [Ping timeout: 200 seconds]

17:36 egg|cell|egg has joined #principia

17:53 egg|cell|egg has quit [Ping timeout: 190 seconds]

18:00 egg|cell|egg has joined #principia

18:03 UmbralRaptop has quit [Remote host closed the connection]

18:05 UmbralRaptop has joined #principia

18:09 armed_troop has quit [Quit: Bye]

18:13 armed_troop has joined #principia

18:21 egg|anbo|egg has quit [Remote host closed the connection]

18:24 egg|cell|egg has quit [Ping timeout: 189 seconds]

18:24 egg|cell|egg has joined #principia

18:28 egg|cell|egg has quit [Ping timeout: 204 seconds]

18:28 egg|cell|egg has joined #principia

19:41 UmbralRaptop has quit [Remote host closed the connection]

19:49 <discord-_> Damien. — You do know you can take screenshots right?

20:09 egg|anbo|egg has joined #principia

20:17 <discord-_> Blast. — anyone know how to get this `.\Principia\rebuild_all_solutions.ps1` to work with git bash in VScode? I'm trying to rebuild the binaries for principia as shown here https://github.com/mockingbirdnest/Principia/blob/master/documentation/Setup.md I get this https://i.imgur.com/XflrAgV.png I am in my root folder.when i get this error

20:18 <discord-_> Acer_Saccharum. — MCI

20:18 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/663114131435421696/screenshot131.png

20:19 <discord-_> Acer_Saccharum. — MCEA

20:19 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/663114194136203283/screenshot129.png

20:19 <discord-_> Acer_Saccharum. — EMB

20:19 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/663114232186798103/screenshot127.png

20:19 <discord-_> Acer_Saccharum. — MCMF

20:19 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/663114275153510400/screenshot125.png

20:19 <discord-_> Acer_Saccharum. — ECI

20:19 <discord-_> Acer_Saccharum. — https://cdn.discordapp.com/attachments/480397772248580098/663114315188011038/screenshot123.png

20:19 <discord-_> Damien. — @Blast any reason you need naster and not release?

20:20 <discord-_> Damien. — @Blast any reason you need master and not release? (edited)

20:20 <discord-_> Blast. — I tried installing the release several times and it crashes everytime I start a new game so figured I'd rebuild and see if I had better luck

20:21 <discord-_> Damien. — @Blast have you used the incorrect version for your ksp version?

20:21 <discord-_> Blast. — 1.7.3

20:22 <discord-_> Damien. — What does the logfile in glog say?

20:22 <discord-_> Damien. — You've probably got a fatal logfile

20:23 <discord-_> Blast. — oh yeah theres a few standby

20:24 <discord-_> Blast. — `Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg

20:24 <discord-_> Blast. — @ 00007FFF25306320 google::LogMessageFatal::~LogMessageFatal [0x00007FFF2530631F+47]

20:24 <discord-_> Blast. — @ 00007FFEB8F57CDD principia__LogFatal [0x00007FFEB8F57CDC+220]

20:24 <discord-_> Blast. — @ 0000000026BD11AC (No symbol) [0x0000000026BD11AB]

20:24 <discord-_> Blast. — F0101 07:37:19.056481 20752 config_node_extensions.cs:71] Duplicate config |principia_gravity_model| (Principia/real_solar_system/gravity_model/principia_gravity_model, Trappist-1 for Principia/trappist_gravity_model/principia_gravity_model)

20:24 <discord-_> Blast. — `

20:25 <discord-_> Blast. — `Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg

20:25 <discord-_> Blast. — @ 00007FFF25306320 google::LogMessageFatal::~LogMessageFatal [0x00007FFF2530631F+47]

20:25 <discord-_> Blast. — @ 00007FFEB8F57CDD principia__LogFatal [0x00007FFEB8F57CDC+220]

20:25 <discord-_> Blast. — @ 0000000026BD11AC (No symbol) [0x0000000026BD11AB]

20:25 <discord-_> Blast. — F0101 07:37:19.056481 20752 config_node_extensions.cs:71] Duplicate config |principia_gravity_model| (Principia/real_solar_system/gravity_model/principia_gravity_model, Trappist-1 for Principia/trappist_gravity_model/principia_gravity_model)

20:25 <discord-_> Blast. — `

20:25 <discord-_> Blast. — `Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg

20:25 <discord-_> Blast. — I0101 07:37:19.006615 20752 interface.cpp:673] Initialized Google logging for Principia

20:25 <discord-_> Blast. — I0101 07:37:19.006615 20752 interface.cpp:674] Principia version 2019122605-Fréchet-0-g30e04bcb3cf67f29d105584f4810fb21295074c1 built on 2019-12-25T11:42:14Z by Microsoft Visual C++ version 192328106 for Windows x86-64

20:25 <discord-_> Blast. — I0101 07:37:19.007612 20752 interface.cpp:687] Base address is 00007FFEB8ED0000

20:25 <discord-_> Blast. — I0101 07:37:19.013597 20752 ksp_plugin_adapter.cs:508] principia.ksp_plugin_adapter.PrincipiaPluginAdapter.OnAwake()

20:25 <discord-_> Blast. — W0101 07:37:19.051496 20752 ksp_plugin_adapter.cs:648] No principia state found, creating one

20:25 <discord-_> Blast. — I0101 07:37:19.053489 20752 interface.cpp:441] Destroying Principia plugin

20:26 <discord-_> Blast. — I0101 07:37:19.053489 20752 interface.cpp:447] Plugin destroyed

20:26 <discord-_> Blast. — @ 00007FFF25306320 google::LogMessageFatal::~LogMessageFatal [0x00007FFF2530631F+47]

20:26 <discord-_> Blast. — @ 00007FFEB8F57CDD principia__LogFatal [0x00007FFEB8F57CDC+220]

20:26 <discord-_> Blast. — @ 0000000026BD11AC (No symbol) [0x0000000026BD11AB]

20:26 <discord-_> Blast. — F0101 07:37:19.056481 20752 config_node_extensions.cs:71] Duplicate config |principia_gravity_model| (Principia/real_solar_system/gravity_model/principia_gravity_model, Trappist-1 for Principia/trappist_gravity_model/principia_gravity_model)

20:26 <discord-_> Blast. — `

20:26 <discord-_> egg. — looks like you somehow have both RSS and TRAPPIST-1?

20:26 <discord-_> egg. — @Blast the problem is not the build, it's the way you configured your install

20:26 <discord-_> egg. — rebuilding will not solve anything, your config files are trying to have both RSS and TRAPPIST-1

20:27 <discord-_> Blast. — RSS isn't compat w/ trappist or something else to do with configs

20:27 <discord-_> lamont. — that sounds kinda cool really....

20:27 <discord-_> egg. — @Blast as you may be aware, TRAPPIST-1 is a different star system

20:27 <discord-_> Blast. — yes

20:27 <discord-_> egg. — RSS is our solar system

20:27 <discord-_> egg. — pick one

20:27 <discord-_> Blast. — oh, ok, was thinking it allowed both

20:28 <discord-_> Blast. — problem solved

20:28 <discord-_> egg. — if you use TRAPPIST-1, you must use @Gregrox's SLIPPIST, and it will make TRAPPIST-1e (or f? I forget) the home body

20:28 <discord-_> egg. — That planet not being Earth, you can't both have that and RSS

20:28 <discord-_> Blast. — yeah I installed both thinking I would have both in game, that makes sense

20:29 <discord-_> Gregrox. — 1e

20:30 <discord-_> Gregrox. — Although egg you should work with Andrew (he's on the Greghole) to make his Real Exoplanets TRAPPIST-1 compatible with principia

20:30 <discord-_> Blast. — Thanks for the clarification

20:30 <discord-_> Gregrox. — Since his mod is way better at rss scale

20:30 <discord-_> lamont. — trappist-1 would fit in between the radius of the sun and the orbit of mercury...

20:30 <discord-_> Gregrox. — The whole system aye

20:30 <discord-_> egg. — @lamont stacking them would be silly but hilarious

20:31 <discord-_> egg. — @Gregrox oh, that's good to know, have you talked to Andrew about that?

20:31 <discord-_> Gregrox. — I mentioned it once i think

20:31 <discord-_> Gregrox. — A long time ago

20:31 <discord-_> Gregrox. — To you both i think

20:32 <discord-_> lamont. — https://giphy.com/gifs/jeff-goldblum-jurassic-park-jurassicparkedit-mCClSS6xbi8us

20:47 egg|anbo|egg has quit [Remote host closed the connection]

21:32 egg|anbo|egg has joined #principia