00:02 <awang> soundnfury: That's a good point

00:02 <awang> Forgot about tanks + fuel

00:02 <awang> I'll need to check again

00:02 <awang> The impression I had was that they were stupidly expensive

00:03 <awang> But I didn't look into it too far

01:02 <awang> lamont: Is vmiss gain supposed to be 1.0 now?

01:50 <awang> lamont: Does PEG require an explicit coast input? Or should PEG still work if I were to just wait before manually igniting the second stage?

02:19 <awang> lamont: Is there a way to specify LAN or argument of periapsis to PEG?

02:32 <lamont> yeah vmiss is 1.0 now. peg will continuously update during the coast phase as it coasts, and will then takeover when you stop coasting. that isn’t the same as having peg calculate a burn-coast-burn though. and peg itself supports targetting the LAN. getting argp and orientation of the periapsis and apoapsis is harder, particularly without burn-coast-burn. and again the problem is that peg does not optimize the coast — NASA does that

02:32 <lamont> with other tools.

02:39 <awang> Might want to change MechJebModulePEGController.cs:499 then

02:39 <awang> It clamps vmiss to [0.01, 0.99], so 1.0 gets overwritten

02:39 <awang> Coasting sounds hard

02:39 <awang> I was wondering because I tried launching to a 350km x 700km orbit at 97 degrees inclination

02:40 <awang> And after first stage burnout I watched the PEG predicted dv for the second burn until it stopped going down

02:40 <awang> Then activated the second stage

02:40 <awang> Ended up in a ~250km x 560km orbit at 96.5 degrees inclination, though

02:40 <awang> So was wondering if the coast screwed something up

02:41 <awang> Tried again without the coast, and ended up with something much closer

02:41 <awang> *closer to target

02:41 <awang> Don't remember exactly what though

02:41 <awang> And can't check now because random characters are missing from the MJ display

02:41 <awang> Not a MJ bug

02:41 <lamont> yeah PEG needs to know about the coast

02:43 <lamont> if you don’t tell PEG about the coast, then you’re kind of lying to it, and the prediction side of the predictor-corrector will be off

02:43 <awang> Ah

02:43 <awang> Fair enough

11:10 <Sarbian> Last MJ dev should handle staging of tanks that had some boiloff better

12:34 <Theysen> o/

12:35 <Theysen> anyone knows why GitHub downloads got so painfully slow for me? It seems files are hosted on AWS servers and my download speed from those is ~ 135kb/s where every download is at the usual 15mb/s. Any clues?

12:36 <Theysen> * every other

12:43 <Sarbian> IPv6 ?

13:16 <Theysen> Is activated yes

13:22 <Theysen_> could it be something to do with DS Lite or something? I'm on cable since 3 months or so but in the beginning it worked like a charm, not anymore since ~3 weeks

13:22 <Theysen_> asked my provider but that was a dead end as usual

13:22 <Sarbian> Try without it. I had speed problem over IPv6 with some operators

13:23 <Theysen_> disabeld it in the adapter settings but still the same, goes to 2MB and then drops back after 2 seconds.. annoying issue. thanks though

13:23 <Sarbian> :(

13:24 <Sarbian> It seems I fixed MJ landing prediction :)

13:26 <Theysen_> oh thanks again for that history settings for MJ

13:26 <Theysen_> Nice

13:26 <Theysen_> saw that BFR dude and his video?

13:31 <Sarbian> I did not

13:33 <Theysen_> https://www.youtube.com/watch?v=Pxd0Rzeo98E seems it worked wonders for him even in RSS and RO :)

13:42 <Sarbian> It s nice to see it working for a change :)

14:00 <Bornholio> .cheers

15:01 <Bornholio> engine fanatics, https://ocw.mit.edu/courses/aeronautics-and-astronautics/16-50-introduction-to-propulsion-systems-spring-2012/index.htm has a reasonablly high level discussion that is useful for us engine phreaks

15:03 <Bornholio> they also have 16.512 Rocket Propulsion and .522 Space Propulsion courses open. Internal Flow in Turbo Machines for people like me getting too far into it is .540

23:26 <lamont> Bornholio: or for those of us into optimal control problems: https://ocw.mit.edu/courses/aeronautics-and-astronautics/16-323-principles-of-optimal-control-spring-2008/lecture-notes/

23:33 <Bornholio> they have great stuff, trying to get my state board to take them as full credit CU's for my license, muhahahah

23:53 <awang> \o

23:56 <Bornholio> https://i.imgur.com/Gd7tx4z.gifv hi awang

23:59 <awang> Uh

23:59 <awang> That looks mildly problematic