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…
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[Principia] eggrobin synchronize pull request #2362: Templatize on the need for the integral of the third kind - https://git.io/Je0Bw
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[Principia] eggrobin edited pull request #2362: Templatize on the need for the integral of the third kind - https://git.io/Je0Bw
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[Principia] eggrobin edited pull request #2362: Templatize on the need for the integral of the third kind - https://git.io/Je0Bw
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<discord->
Transparent_Elemental. — how do i know when i have an encounter with a celestial (moon in my case)? i sort of understand maneuver plotting now, but the history shows me that my trajectory near the moon's orbit curves weirdly as if moon was there but it won't be there after 3 days of flight time
<discord->
Damien. — you can slot it in after the KSP2 release
<discord->
Damien. — which is due next week
<discord->
Damien. — 🙂
<discord->
egg. — lol
<discord->
Damien. — forgot my github password lol
<discord->
Damien. — I'll do it when I get home
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<discord->
Transparent_Elemental. — where is the burn countdown shown? i can't find it with the maneuver in 10 minutes
<discord->
egg. — On the "Upcoming manoeuvre" line
<discord->
egg. — Ignition -blah
<discord->
Transparent_Elemental. — why my trajectory looks completely off to what it was in the planner? I had enough dV and even using rcs doesn't help much
<discord->
Kenira. — it also does not update when you stage, and it calculates the burn with your active engines
<discord->
Kenira. — so those may all be reasons why it can be off, and you will always need some corrections
<discord->
Kenira. — it also doesn't look like it's off by that much
<discord->
Kenira. — not much, in dv terms
<discord->
egg. — > @Kenira with inertially fixed, you're supposed to start half the burn time earlier.
<discord->
egg. — NO!
<discord->
egg. — not at all!
<discord->
Damien. — oh no
<discord->
Damien. — you've enraged the egg
<discord->
egg. — the flight plan always models starting at the stated time
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Kenira. — shame on me 😛 someone told me that and i parroted it without testing it
<discord->
egg. — inertially fixed only determines whether you guide during the burn
<discord->
egg. — You are misinterpreting the weird hacky procedure that can be used to coerce mechjeb into approximately executing a burn
<discord->
egg. — it doesn't really work, and it is absolutely not how the underlying manoeuvre is modeled by Principia
<discord->
Kenira. — (i almost always use non-inertial these days anyway)
<discord->
egg. — inertial is basically for spin-stabilized burns
<discord->
Kenira. — i've also had issues with it for large orbit changes at low orbital speeds because it rotates so fast, and the craft just can't keep up rotating
<discord->
Kenira. — it does have its uses
<discord->
egg. — yeah
<discord->
egg. — but it really only means what it says: the guidance is inertial
<discord->
Kenira. — but yeah, my overall point still stands: there will be inaccuracies, especially the staging thing can really mess things up, and needing corrections will always be necessary
<discord->
Kenira. — in the picture the apoapsis is out to almost 200Mm already, that just needs tiny bit more dv to reach the moon
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[Principia] eggrobin synchronize pull request #2362: Templatize on the need for the integral of the third kind - https://git.io/Je0Bw
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[Principia] eggrobin synchronize pull request #2362: Templatize on the need for the integral of the third kind - https://git.io/Je0Bw
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[Principia] eggrobin edited pull request #2362: Templatize on the need for the integral of the third kind - https://git.io/Je0Bw