UmbralRaptop changed the topic of #principia to: READ THE FAQ: http://goo.gl/gMZF9H; The current version is 🐇. 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…
<discord-> S​umguy. — so how do I find the cheapest way to the moon? the hohmann transfer from the MJ maneuver planner is too expensive
<discord-> S​umguy. — I have like 5km/s and change in a 160m circular orbit at Cape inclination.
<discord-> l​pg. — I understand the scenarios where using the 'inertially fixed' flight planning setting is important; but when is it a _bad_ idea to use it? What's the downside? long burns waste some dv burning off prograde?
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<egg> yeah it's less efficient
<egg> it's not that often useful
<egg> there are technical issues that make it useful when using mechjeb, but that's mechjeb's limitations, rather than a physical constraint
<egg> and there are spin-stabilized burns
<egg> spin-stabilized burns are the main application for `inertially fixed`
<discord-> e​gg. — wait that was ambiguous
<discord-> e​gg. — when I said "it's not that often useful", "it" means `inertially fixed`, rather than "not inertially fixed"
<discord-> K​enira. — really? i always do inertially fixed because my burns frequently get all messed up if i don't
<discord-> e​gg. — Messed up by what
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<discord-> K​enira. — the trajectory is just way off from the plan
<discord-> K​enira. — like, needing 600m/s correction burn after an interplanetary departure burn
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<discord-> D​amien. — Are you doing the 50/50 trick for the burn like stock?
<discord-> D​amien. — If so don't
<discord-> K​enira. — what do you mean? am i supposed to only start burning at the maneuver node time?
<discord-> D​amien. — Yes
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<discord-> D​amien. — The 50/50 trick is because stock assumes 100% of the burn done at the exact moment of the node. That's impossible so we split it
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<discord-> D​amien. — Principia takes the duration of burn into account
<discord-> D​amien. — So ignite at t-0
<discord-> K​enira. — wellllllll
<discord-> K​enira. — that explains why i've been off
<discord-> K​enira. — although no idea why i felt like i got better maneuvers done with inertial
<discord-> D​amien. — Because inertial replicates stock
<discord-> D​amien. — So the 50/50 trick works
<discord-> K​enira. — although it does not solve one other problem i've been having and that is if you start a burn with fumes from the last stage, principia will go with the still active engines giving you really high TWR, which means it's pretty useless
<discord-> K​enira. — or well useless is harsh, but it again means the trajectory will be quite a bit off
<discord-> D​amien. — Yeah it takes the twr when the plan was made unfortunately
<discord-> D​amien. — Unless that's been fixed recently
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<discord-> D​amien. — I know there's been a lot of updates since I last played
<discord-> K​enira. — luckily i usually have stages with lots of engines so i go and disable all but one to be less wrong at least, but it's still something that is a problem for maneuvers where high precision is important
<discord-> K​enira. — like the mercury lander i've been working on, if the departure burn of 7km/s is off by a bit that means a hefty correction burn
<discord-> e​gg. — > @Damien Unless that's been fixed recently
<discord-> e​gg. — Nope, it's still like that, super clunky
<discord-> D​amien. — @Kenira looks like you need to plan your stages so you can afford to ditch the fumes stage
<discord-> K​enira. — usually not a problem
<discord-> K​enira. — with the mercury lander, that means having even more dv buffer
<discord-> D​amien. — @egg can an existing plan update the burn times if a stage happens?
<discord-> e​gg. — no
<discord-> e​gg. — the flight plan is really clunky
<discord-> e​gg. — though I guess now with out-of-order edition we could probably support such changes?
<discord-> D​amien. — that's what I was thinking when I wondered if it'd already been done
<discord-> e​gg. — so many things to do, so little time
<discord-> D​amien. — so it'll be released in the next version right? 😄
<discord-> e​gg. — 🥚 🌩
<discord-> K​enira. — you have 2 weeks.
<discord-> K​enira. — 😛
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<discord-> K​enira. — what does it mean if i get "the computation failed, try changing the flight plan"? trying to plan my voyager 2 trajectory, 1700 day flight plan is fine, 1800 days and i get that error. increasing steps doesn't help either
<discord-> K​enira. — best i can do with how long i can make the flight plan. can do jupiter and saturn flybys, then it stops halfway to uranus
<discord-> e​gg. — hm
<discord-> e​gg. — I don't understand how we can end up emitting that message
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<discord-> T​ransparent_Elemental. — i want to install principia and struggling to understand what binaries the install tutorial wants me to download?
<discord-> T​ransparent_Elemental. — @Kenira maybe you can help me with that?
<discord-> A​cer_Saccharum. — You go to the forum page, and there's a small link partway down the top post with the download link
<discord-> A​cer_Saccharum. — It's a Google drive Link I believe
<discord-> A​cer_Saccharum. — Part of me thinks the small link is a reading comprehension test
<discord-> T​ransparent_Elemental. — so do i just unzip it into the gamedata and principia's master branch isn't the thing that i need?
<discord-> l​pg. — you definitely want a release, not master. so yes
<discord-> T​ransparent_Elemental. — the binary is linked in the tutorial where it's much less crowded in text, it confused me because first it asks to download some weird binary and then "and here for 1.5.1, 1.6.1 and 1.7x" link leads to a folder named principia for 1.7.3
<discord-> K​enira. — well it's compatible with earlier versions too
<discord-> K​enira. — and it's definitely bit confusing, first time i installed it it took me a bit to figure out what i need too
<discord-> T​ransparent_Elemental. — i mean it's not about the version
<discord-> T​ransparent_Elemental. — why would you call your mod a binary
<discord-> l​pg. — developertalk
<discord-> l​pg. — 'a binary' and 'a build' are more or less interchangeable when it comes to compiled languages
<discord-> T​ransparent_Elemental. — guess this is a struggle philosophy just like the rp-1
<discord-> l​pg. — It doesn't help that the sentence is broken ("Download the binary and here")
<discord-> T​ransparent_Elemental. — yeah that too
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<discord-> n​eph. — Just go to the repo home and scroll down
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<discord-> e​gg. — @lpg oups
<_whitenotifier-31f> [Principia] eggrobin pushed 1 commit to master [+0/-0/±1] https://git.io/Je82t
<_whitenotifier-31f> [Principia] eggrobin 12bd3bc - Remove stray conjunction.
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