egg changed the topic of #principia to: Logs: https://esper.irclog.whitequark.org/principia | <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…
<queqiao->
⟨SpaceMarine⟩ okay so am preparing to do interplanetary stuff now, this is the first time doing it with principia what do i need to know
<queqiao->
⟨SpaceMarine⟩ specifically am going to be going after a venus orbiter
<queqiao->
⟨Soviet Onion⟩ good luck !
<queqiao->
⟨Soviet Onion⟩ ⟪SpaceMarine⟫ okay so am preparing to do […] ⮪ heliocentric frame to plot manoeuvers 😏
<queqiao->
⟨pEdro⟩ wrong way to think about it
<queqiao->
⟨pEdro⟩ its not difficult.
<queqiao->
First you get a window and ∆V from TWP
<queqiao->
a few days before launch run TWP again to get rid if any perturnation induced error
<queqiao->
⟨pEdro⟩ launch, then do as much tangent as TWP thinks you need, switch to a frame centered on your target, then adjust t initial untill its close
<queqiao->
⟨Soviet Onion⟩ oh, alright
<queqiao->
⟨pEdro⟩ you wont get close enough doing just that though, after that you often still have several 10000 kilometers to space low height, last bit is just a matter of some normal and binormal
<queqiao->
⟨pEdro⟩ then corrections are done,
<queqiao->
if you need large corrections, point and burn, if not point your panels into the sun, then just press buttons untill you are on target
<queqiao->
⟨pEdro⟩ then, corrections are done,
<queqiao->
if you need large corrections, point and burn, if not point your panels into the sun, then just press buttons untill you are on target.
<queqiao->
⟨SpaceMarine⟩ alright thanks il give it a go
<queqiao->
⟨lpg⟩ left out one important "need to know" bit: "you get a window and ∆V _and LAN_ from TWP"
<queqiao->
⟨pEdro⟩ the LAN is required for stock too
<queqiao->
⟨pEdro⟩ also, unless you really cut some corners, running twp a second time close to launch isn't needed
<queqiao->
⟨lpg⟩ the LAN isn't required for the 98% of players who live by the 'plane of the moon' mantra
<queqiao->
⟨pEdro⟩ won't the ∆V numbers that TWP provides be completely wrong then ?
<queqiao->
⟨lpg⟩ that 98% of players don't use TWP at all
<queqiao->
⟨pEdro⟩ bummer really, TWP is such a usefull tool
<queqiao->
⟨Quadrupole⟩ If they want to be inefficient, let them be
<queqiao->
⟨pEdro⟩ the only other option to get windows is the probe in lunar plane with MJ, and that requires 2 scene switches, TWP requires 0
<queqiao->
⟨lpg⟩ a substantial fraction of that 98% also lives by KAC's window finder
<queqiao->
⟨pEdro⟩ KAC provides windows bad enough that i got a better one by taping a triangle ruler to my screen
<queqiao->
⟨Quadrupole⟩ I remember seeing some burns in Terminal Velocity with really large normal component. Apparently TD _was_ that 98%
<queqiao->
Though tbf TWP was not adapted for RSS at tjat time
<queqiao->
⟨Quadrupole⟩ * that
<queqiao->
⟨pEdro⟩ still gave better timing even back then
<queqiao->
⟨pEdro⟩ * then, atleast over KAC
<queqiao->
⟨Quadrupole⟩ Cape Canaveral is just so _conveniently_ close to the max inclination of the moon
<queqiao->
⟨SpaceMarine⟩ So am back
<queqiao->
⟨SpaceMarine⟩ I have been able to get a "close" encounter with venus (well relatively), got it down to 215,000,000 which is obviously not what am looking for, am launching at the correct window with the correct LAN and delta v
<queqiao->
⟨SpaceMarine⟩ am not sure if am on the wrong reference plane or something else, so any ideas? am using VSO at thats what its described to be used for
<queqiao->
⟨SpaceMarine⟩ I have been able to get a "close" encounter with venus (well relatively), got it down to 38,000,000 which is obviously not what am looking for, am launching at the correct window with the correct LAN and delta v
<queqiao->
⟨Quadrupole⟩ Is your maneuver in ECI?
<queqiao->
⟨SpaceMarine⟩ no
<queqiao->
⟨Quadrupole⟩ Then you should change it to ECI. You want to burn prograde wrt to your earth orbit, not wrt Venus
<queqiao->
⟨SpaceMarine⟩ ah okay
<queqiao->
⟨SpaceMarine⟩ well il try that later today, got stuff to do now
<queqiao->
⟨SquirrelBomber⟩ hello, I am trying to build principia for ubuntu because it won’t run with a systemd ram limit. it cannot find the dll file? but i thought building it might help, but i don’t know how to add the assembly links, is there anyone that could help?
<queqiao->
⟨lamont⟩ "because it won’t run with a systemd ram limit" <--- what are you trying to do here?
<queqiao->
⟨lamont⟩ why are you trying to run KSP and/or Principia under systemd?
<queqiao->
⟨lamont⟩ if you're launching it under a shell and the shell has ulimits setup ("ulimit -a") that prevent principia from running you should instead beat on your shell to get you unlimited memory and get ulimits out of the way
<queqiao->
⟨SquirrelBomber⟩ ⟪lamont⟫ if you're launching it under a shell […] ⮪ i’m using systemd to impose a ram limit on ksp. giving it unlimited ram makes it use all available ram and crash.
<queqiao->
systemd ram limit stops principia from working (i think it’s because systemd ram limits make the program run through systemd)
<queqiao->
⟨lamont⟩ how much RAM do you have?
<queqiao->
⟨lamont⟩ and then if that's all you're trying to do, you should just set a ulimit on the command line and launch the process from that window, you don't need to use systemd, and there's no point afaik to recompiling the library
<queqiao->
⟨lamont⟩ either way you set a process ulimit, not a library ulimit