13:54 <discord-> e​gg. — Ah, ⯉

16:05 <discord-> O​ndrikB. — Any tips on doing interplanetary transfers/gravity asissts?

16:06 <discord-> D​amien. — @Kenira one for you 🙂

16:09 <discord-> K​enira. — gravity assists is more advanced, and basically requires either experience or good planning tools (like TOT = Trajectory Optimization Tools)

16:09 <discord-> K​enira. — for regular interplanetary transfers, the most reliable way of getting transfer windows is through MJs advanced maneuver planner, it can do porkchop plots. so you put a craft into LEO, usually equatorial since that's basically ecliptic and will be close enough to make transfers to pretty much any body work. and then use the maneuver planner to get your transfer windows. that has been working pretty

16:09 <discord-> O​ndrikB. — doesn't principia override the standard maneuvers?

16:10 <discord-> K​enira. — yeah but it's pretty straight forward and arguably easier to use than stock maneuvers

16:10 <discord-> K​enira. — thanks to the frames of reference you can select in principia

16:10 <discord-> O​ndrikB. — but how do you use the maneuver planner then?

16:10 <discord-> O​ndrikB. — since that places a stock maneuver

16:10 <discord-> K​enira. — you create a flight plan, then you'll have an option to add a maneuver node

16:11 <discord-> K​enira. — there you can set the dv in prograde/retrograde, normal/antinormal etc and the time of the maneuver

16:11 <discord-> K​enira. — you also need to increase the flight plan length since with principia you do have to manually set how far principia will calculate into the future

16:11 <discord-> O​ndrikB. — ye

16:12 <discord-> K​enira. — the one thing to note about principia maneuvers is that you should not start the burn half the burn time earlier. you start the burn at the node time.

16:14 <discord-> O​ndrikB. — yeah

16:14 <discord-> O​ndrikB. — in the ignition timer

16:14 <discord-> O​ndrikB. — I have done a weakly-bound transfer to the Mun, and a transfer from Vall to Laythe before

16:14 <discord-> O​ndrikB. — now it's the interplanetary things I want to figure out

16:14 <discord-> K​enira. — but yeah once you're familiar with how the basics of flight planning works, the nice thing about principia is that once you've set up the trajectory very roughly, you can switch to the FoR of your target, making it very easy to see if changes you make to the maneuver dv get you closer or further away

16:15 <discord-> K​enira. — it also shows you the orbital flyby dv which is something to look out for when you want to capture too, and not just do a flyby

16:15 <discord-> D​amien. — interplanetary I can do but gravity assists I struggle with

16:15 <discord-> D​amien. — probably partly because I never did them in stock

16:16 <discord-> K​enira. — generally, principia can be intimidating to get into, but once you play around a bit and get the basics it's not that bad

16:17 <discord-> K​enira. — yeah gravity assists are definitely complicated. the only ones i've done in this career are for the voyager probes so i didn't have to figure them out, just execute

16:22 <discord-> D​amien. — @Kenira did you use the RL launch dates?

16:22 <discord-> K​enira. — yes

16:22 <discord-> D​amien. — yeah that's what I did for my Pioneer 0 recreation

16:22 <discord-> O​ndrikB. — I guess that's pretty easy then

16:22 <discord-> D​amien. — having to work the trajectory out myself, yeah no

16:22 <discord-> O​ndrikB. — but what if you're trying to do something in the stock system like KEKKJ?

16:23 <discord-> K​enira. — instead of doing titan with Voyager 2 i went on to pluto instead, but i still launched at the time and that worked out

16:23 <discord-> s​iimav. — > so you put a craft into LEO, usually equatorial since that's basically ecliptic

16:23 <discord-> s​iimav. — That isn't right. Ecliptic is at around 23-24 deg inclination.

16:23 <discord-> K​enira. — ....yeah not sure what i was thinking there

16:24 <discord-> K​enira. — you launch into the plane of the moon's orbit basically

16:24 <discord-> s​iimav. — That's why patched conic users launch into the plane of the Moon because it's only a couple of degrees off.

16:24 <discord-> K​enira. — or in principia you launch when you're closest to the moon as you can get

16:32 <discord-> e​gg. — mooo

16:36 <discord-> S​umguy. — how do I get into an escape orbit?

16:38 <discord-> n​eph. — go fast

16:38 <discord-> n​eph. — Also, escape *trajectory

16:50 <discord-> A​mpersand. — Burn at least 3100 m/s prograde at a low point in your orbit

16:51 <discord-> R​urouniDonut. — How well can Mechjeb execute principia nodes?

16:51 <discord-> R​urouniDonut. — I always overshoot a tiny bit manually

16:52 <discord-> D​amien. — it doesn't understand them

16:52 <discord-> D​amien. — there is a workaround but it's hacky

16:52 <discord-> A​mpersand. — MechJeb is usually off by a couple m/s without principia, I can't imagine it'd do well

16:52 <discord-> A​mpersand. — Which is why I always pack overkill RCS

16:55 <discord-> R​urouniDonut. — I used to pack overkill

16:55 <discord-> R​urouniDonut. — But Im better at it now

16:56 <discord-> R​urouniDonut. — Plus, slowing down the game time through the better time warp mod is VERY useful

17:34 <discord-> S​umguy. — in what direction?

17:54 <discord-> A​mpersand. — I need to reinstall that honestly

20:37 <_whitenotifier-31f> [Principia] pleroy edited pull request #2368: Full argument reduction for the elliptic integrals - https://git.io/Je2Tb

22:38 <discord-> l​pg. — I had good results using kOS to do timed burns. (currently trying the same with kRPC, with less good results)

22:54 <discord-> R​urouniDonut. — I need to get into kos...

23:15 <discord-> P​rojectGemini. — What problem are you having with KRPC?

23:19 <discord-> l​pg. — when it works at all, timing has seemed a bit coarse (presumably due to client/server roundtrip)

23:20 <discord-> l​pg. — But mostly I've been having trouble with it falling in a state where changing the throttle plain doesn't work, as if it was read-only

23:21 <discord-> l​pg. — Haven't yet gotten to the point of understanding what triggers it