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
<discord->
RurouniDonut. — So how does the hack work for hyperedit?
<discord->
RurouniDonut. — Just turn hack gravity on?
<discord->
RurouniDonut. — Nvm I got it
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<discord->
Butcher. — @egg Are the manoeuvre burn times meant to be somewhat accurate in the flight planner? I'm getting principia saying 74.5s but my own calcs and KER say 56.5s for a burn with that delta-v.
<discord->
egg. — Did you create the manoeuvre with the correct engines active
<discord->
Butcher. — Yes I believe so,.
<discord->
Butcher. — How can I check?
<discord->
Butcher. — There were only two engines on the ship and both were in the current stage.
<discord->
lpg. — the best way to "check" is to delete the flight plan, activate the right engine, and start over
<discord->
lpg. — (I do wish there was a button to tell principia to "reload" the active engine)
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<discord->
egg. — @lpg @Butcher I think the button does that already; it's for the initial mass that you need to delete the flight plan
<discord->
lpg. — which button does what?
<discord->
egg. — the button that switches to active engines
<discord->
lpg. — oh 'active engine' reloads the engine? not sure I've ever had the issue in a scenario other than 'dropping a stage, so 'initial mass' might have been the real issue
<discord->
egg. — yeah
<discord->
lpg. — oh 'active engine' reloads the engine? not sure I've ever had the issue in a scenario other than 'dropping a stage', so 'initial mass' might have been the real issue (edited)
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<discord->
Butcher. — How activated do the engines need to be? I mean I only have one ignition on these...
<discord->
Butcher. — They're all showing as active on the PAW.
<_whitenotifier-d13c>
[Principia] pleroy opened pull request #2420: Invert the diagonalization rotations for consistency with EulerSolver - https://git.io/JeNQ0
<discord->
Butcher. — The burn is basically 2 motors on, burn until almost out of fuel.
<discord->
egg. — no solid engines?
<discord->
Butcher. — Nope.
* discord-
egg. — scratches head_
<discord->
Butcher. — 2 liquid fuelled, 4 RCS.
* discord-
egg. — scratches shell_
<discord->
egg. — oh you're burning RCS + liquid fuel engines at the same time?
<discord->
Butcher. — No. RCS are just for steering.
<discord->
egg. — hm
<discord->
Butcher. — Also, I have now done that burn, and setup a new one, with just RCS. My estimate is now out by a factor of ~3.
<discord->
egg. — this is very odd
<discord->
egg. — your engines are odd
<discord->
Butcher. — RCS burn for 95 m/s, should be 188.5s by my calcs, about 187 by KER, 562.5 by principia.
<discord->
Butcher. — My engines are fairly normal RO engines.
<discord->
Butcher. — As are my RCS.
<discord->
egg. — and you have deleted & recreated your flight plan?
<discord->
egg. — your flight plan, not your manoeuvre
<discord->
Butcher. — Hmm, I wonder if principia is not picking up the correct config? So it might be using default config for RCS which is something like nitrogen cold gas. But mine are HTP which have different performance.
<discord->
egg. — hm
<discord->
Butcher. — Yes. RCS is on a new flight plan.
<discord->
egg. — yeah it's not aware of the fancier engines, so if the stock-compatible stats are wrong that might explain things? odd though
<discord->
Butcher. — KER is correctly picking them up, so not sure.
<discord->
Butcher. — These aren't anything fancier than normal RO stuff.
<discord->
Butcher. — MY main engines are SPE which might throw it off, but my RCS are just standard RO stuff.
<_whitenotifier-d13c>
[Principia] pleroy closed pull request #2420: Invert the diagonalization rotations for consistency with EulerSolver - https://git.io/JeNQ0
<_whitenotifier-d13c>
[Principia] pleroy pushed 2 commits to master [+0/-0/±10] https://git.io/JeN7U
<_whitenotifier-d13c>
[Principia] pleroy a565b26 - Inverse the rotations.
<_whitenotifier-d13c>
[Principia] pleroy eb4e48e - Merge pull request #2420 from pleroy/InverseRotations Invert the diagonalization rotations for consistency with EulerSolver