[13:39:36] NASSP Logging has been started by n7275
[13:39:38] <n7275> hello
[13:41:45] <indy91> hello hello
[13:42:26] <indy91> I think I am getting a fever, might as well quickly get these LVDC fixes finished before I don't feel like it anymore haha
[14:36:06] <n7275> oh that's no fun
[16:33:58] <thewonderidiot> morning!
[16:46:00] <indy91> hey Mike
[16:46:34] <thewonderidiot> what's up?
[16:48:45] <indy91> the "bug of the day" seems to decide my project schedule lol
[16:49:28] <thewonderidiot> hahaha
[16:50:06] <thewonderidiot> seems to be a lot recently. even I got hit by one yesterday. that doesn't happen very often :P
[16:50:24] <indy91> haha
[16:50:44] <indy91> I just wish it was something that made some W-Matrix issues suddenly better
[16:51:38] <indy91> but that's likely just padloads we still don't know for sure in early Colossus
[16:52:39] <indy91> I guess while I am in the LVDC I should start another attempt at improving TLI cutoff accuracy
[16:56:18] <thewonderidiot> it's kind of surprising we still haven't found any Colossus payloads by this point
[16:56:28] <indy91> we had found a testing one
[16:56:41] <indy91> but it doesn't even have everything for a full mission
[16:57:31] <indy91> I think it came from some debugging sim run?
[16:57:51] <indy91> something from the Smithsonian
[17:00:35] <thewonderidiot> oh yeah that sim printout they were calling a program listing lol
[18:49:30] <indy91> cya!
[14:46:30] <n7275> hello
[14:49:00] <indy91> hey Matt
[14:50:43] <n7275> feeling any better today?
[14:52:28] <indy91> strangely yes haha, just a bunch of sneezing. Colds are a mystery, sometimes they last 2 weeks and sometimes 2 days...
[14:57:46] <n7275> I pretty much never get sick, but this year I've had like 6 colds.
[14:58:16] <n7275> I'm probably just getting old
[14:59:47] <indy91> these days I am getting all my colds from my two half brothers (8 and 10 years old)
[14:59:55] <indy91> schools are like that :D
[15:00:01] <indy91> everything spreads
[15:00:17] <indy91> guess who I saw on Sunday...
[15:00:57] <indy91> although right now it's the summer holidays
[15:03:25] <n7275> actually, yeah, it's probably that all my friends have kids in the 5-10 year age range now 
[15:06:09] <n7275> really selling me on the idea haha
[15:12:41] <n7275> I've been trying to find the source of one annoying little OpenOrbiter bug.
[15:17:09] <indy91> oh, what is it?
[15:20:24] <n7275> D3D9 producing NaNs in the lighting/mesh color calculation
[15:25:07] <n7275> but only near certian planets
[15:29:12] <indy91> oh weird
[15:29:19] <indy91> anything 64bit going on?
[16:27:12] <thewonderidiot> morning!
[16:34:00] <indy91> hey
[16:34:25] <n7275> indy91, I'm only focusing on 32 bit
[16:34:34] <n7275> hey mike
[20:45:40] <indy91> night!
[16:17:25] <thewonderidiot> morning!
[16:20:06] <indy91> good evening
[16:20:29] <thewonderidiot> what's up?
[16:20:56] <indy91> taking it easy, the cold has returned haha
[16:21:32] <thewonderidiot> oh no!
[16:21:39] <thewonderidiot> that sucks
[16:23:06] <indy91> I'll survive, I just don't like it being so random from day to day haha
[16:23:41] <indy91> and I'm not feeling bad enough to not try and make a bit of progress with the lunar descent planning overhaul
[16:24:36] <indy91> a few modes still to do
[16:24:41] <thewonderidiot> gotcha gotcha
[16:24:56] <indy91> some modes work well, modes that problably never really worked right
[16:25:00] <thewonderidiot> I missed the second negative there at first read it as "I'm not feeling bad enough to try working on the LDPP" :P
[16:25:16] <indy91> oh it sometimes works that way, too :D
[16:25:22] <thewonderidiot> hehehe
[16:26:21] <indy91> "You don't want to not vote for John Kerry?"
[16:27:39] <thewonderidiot> oh man that's a throwback
[16:28:28] <indy91> a meme video so old it might preceed the word meme
[16:29:01] <indy91> I definitely knew it at the time :D
[16:32:26] <indy91> I've got that mode working that you can choose if you want to do PDI at a different altitude and at a different time, needing a plane change maneuver
[16:32:42] <indy91> I guess they just came up with several non-nominal LOIs and how to recover from them
[16:32:50] <thewonderidiot> oh interesting
[16:32:55] <indy91> and for each type of bad orbit they needed a LDPP mode
[16:35:10] <indy91> there must have been more updates to the LDPP, I got the baseline document from early 1968, a Change 1 from July 1968
[16:35:24] <indy91> but they definitely had a few more features by Apollo 13 or 15
[16:35:41] <indy91> not sure if any update document exists
[16:35:46] <indy91> NARA only had this change
[16:36:06] <indy91> their collection isn't complete, neither is the list of scanned front pages
[16:36:21] <indy91> so it might have been a re-release of the full document that we just can't know about
[16:36:42] <indy91> I should catalog the MPAD memos
[16:37:00] <indy91> pretty sure I have said that a few years ago already :D
[16:37:24] <thewonderidiot> lol
[16:37:30] <thewonderidiot> too many things to do
[16:39:00] <indy91> that's at least an easy one, just a bit work intensive
[16:54:12] <thewonderidiot> I'm getting dangerously close to powering up a CDU
[16:54:16] <thewonderidiot> might happen tonight or tomorrow
[16:54:50] <thewonderidiot> I'm mostly now just doing homework to determine what all is safe to leave disconnected
[16:57:00] <indy91> awesome
[16:57:04] <indy91> anything left in a PGNS you haven't powered up? :D
[16:58:22] <thewonderidiot> I haven't powered up a PSA, but that could also feasibly happen this weekend
[16:58:28] <thewonderidiot> LM PSA
[16:58:44] <thewonderidiot> there's a very real chance I never get to power up an IMU though lol
[16:58:52] <thewonderidiot> or CM optics
[16:59:18] <thewonderidiot> I have access to a PTA but also that is probably not quite so interesting to power up
[16:59:35] <indy91> ah yeah, IMU is a big one haha
[17:01:23] <indy91> would be amazing to see an exposed IMU do a coarse alignment
[17:02:27] <thewonderidiot> that would be very cool
[17:02:45] <thewonderidiot> I worry about all of the fluids and whatnot inside PIPAs and IRIGs though
[17:02:59] <thewonderidiot> that is probably not so easy to fix, if that stuff has solidified or evaporated
[17:06:05] <indy91> ouch yeah
[17:07:44] <thewonderidiot> I think Marc is thinking about spinning up his IRIG again, so maybe we will learn sooner rather than later how feasible a whole IMU might be
[16:55:49] <thewonderidiot> morning!
[16:58:10] <thewonderidiot> indy91, I don't think you're in the CDU thread on discord, but I progressed to half a CDU powered on last night: https://i.imgur.com/gP1Zw4C.png
[16:58:58] <thewonderidiot> 4.0099V for the 4V power supply is pretty good after 55 years :)
[16:59:31] <indy91> oooh amazinh
[16:59:32] <indy91> g
[17:00:21] <thewonderidiot> all of the timing pulses are working as expected
[17:24:12] <indy91> those CM closeout pics are bugging me :D
[17:24:19] <indy91> I concede that it might be the Apollo 12 CMC
[17:24:22] <indy91> CM*
[17:24:28] <indy91> maybe pre mating "closeout"
[17:25:15] <indy91> 11 vs 12 would have one difference on the right side of the CWS, which we can't see
[17:25:19] <indy91> especially with that sticker on it
[17:26:25] <indy91> there should be a EMS scroll assembly difference, but I don't know if you could see it
[17:33:38] <indy91> ah wait, I didn't have all pics downloaded
[17:36:05] <indy91> it definitely can't be Apollo 14 or later due to panel changes
[17:41:05] <indy91> all the velcro spots looks a lot closer to Apollo 12 and 11
[17:42:56] <thewonderidiot> hmmmmmm
[17:43:59] <indy91> sorry
[17:44:02] <indy91> closer to 12 than 11*
[17:44:22] <thewonderidiot> which 12 pictures are you looking at?
[17:45:01] <indy91> very pixely TV footage of MCC-2 :D
[17:45:06] <thewonderidiot> hahahaha
[17:45:30] <indy91> but you can see, barely, enough to be able to tell some differences in the velcro spots
[17:46:31] <indy91> like the one just above and to the right of the DSKY
[17:46:36] <indy91> Apollo 11 has a square one
[17:46:53] <indy91> in these closeout pics and vide from the mission it is not a square but rectangular, smaller
[17:46:57] <indy91> video*
[17:50:03] <thewonderidiot> damn the astronauts taking pictures of the stupid moon and not their spaceship
[17:50:43] <indy91> Apollo 17 liked selfies, most others didn't :D
[19:28:17] <n7275> hey guys
[19:39:33] <thewonderidiot> hey
[14:53:06] <indy91> hey
[18:01:55] <n7275> hello
[18:03:39] <indy91> hey Matt
[18:04:04] <indy91> how are you NASSP projects going? Still in a bit of a research phase for improving systems chemistry?
[18:28:33] <n7275> mostly in the 'taking a break from transcribing thermophysical tables' phase
[18:32:16] <indy91> haha ouch
[18:36:07] <n7275> it's just a matter of motivation and focus
[18:37:30] <n7275> or, rather, having both at the same time
[18:38:46] <indy91> yeah it's hard, if I don't have both at the same time I often have to scrap what I was working on, especially if it's complicated RTCC or LVDC topics.
[18:39:35] <indy91> and most RTCC projects these days are improvements of bad coding of the past, that doesn't motivate very well haha
[18:39:55] <indy91> not as much as a shiny new feature
[18:54:24] <n7275> I think we can safely say that most of the easy projects are done at this point 
[20:39:29] <indy91> night!
[15:31:01] <thewonderidiot> morning!
[16:30:50] <indy91> hey Mike
[16:50:04] <thewonderidiot> what's up?
[16:52:00] <indy91> finishing touches of the descent planning processor I would say!
[16:52:09] <indy91> finally gets added properly to the manual
[16:52:29] <indy91> I don't think I can any of the additional features right now
[16:52:47] <indy91> it could simulate through powered descent and show things like throttle down time
[16:53:16] <indy91> but that is a separate project, overhauling the RTCC descent sim so that it can output the data table with that and other information
[16:54:41] <indy91> all LDPP modes are actually working now, previously... not so much
[17:06:12] <thewonderidiot> excellent!
[17:07:34] <indy91> one of those (many things) that have always been bugging me that they aren't working good enough haha
[17:35:50] <thewonderidiot> so what's next?
[17:40:07] <indy91> there are 1-2 RTCC things where it's the same as the LDPP. I implemented it very closely from a flowchart and it's not quite performing how I would like. So I kind of have to write them from scratch to untangle it all.
[17:40:52] <indy91> with the tweak burn displays I implemented a new system of how to do MOCR displays. So instead of having a new system with every new display I should really make a lot more current displays use this system.
[17:41:04] <indy91> so that's another thing I should do.
[17:41:43] <thewonderidiot> oh nice
[17:41:47] <thewonderidiot> so lots of cleaning and refactoring :D
[17:42:29] <indy91> Yeah so CSM/LM burn sim overhaul might be the next RTCC project
[17:42:35] <indy91> getting rid of all label/goto :D
[17:43:04] <thewonderidiot> lol excellent, that is a worthy cause
[17:43:22] <indy91> after that the SPQ processor (RTCC equivalent to the onboard rendezvous targeting) could use cleaning and refactoring
[17:43:30] <indy91> that one might also get some new features
[17:44:16] <indy91> it's missing support for dwell orbits, required for anytime liftoff
[17:44:28] <indy91> in Mike Collins list of 18 CSM rescue cases that is number 18 :D
[17:44:50] <indy91> and we can only do a variant of it right now, from later missions
[17:45:58] <indy91> that's for an anytime LM liftoff where the CSM vs. LM relative phasing is currently taking them further away instead of getting them closer together
[17:46:16] <indy91> and the LM can't do any maneuvers because of a failure
[17:46:32] <thewonderidiot> hahaha so a very very bad day
[17:46:36] <indy91> and to get to the LM normally the CSM would have to get lower than the LM, which is possibly unsafe
[17:46:47] <indy91> so instead of going low the CSM goes really high
[17:47:03] <indy91> and let's the LM do one whole orbit more than the CSM does
[17:47:41] <indy91> can take 1-3 CSM orbits, typically 3
[17:47:54] <thewonderidiot> ohhh interesting, that makes sense
[17:47:56] <indy91> LM catching up that much during 1 CSM orbit would need the CSM to go in a reaaally high orbit
[17:48:21] <indy91> I think this rescue mode was the limiting factor in the SPS DV allocated for CSM rescue
[17:48:34] <thewonderidiot> does really high mean really eccentric? or does it circularize high?
[17:48:49] <indy91> eccentric, back to circular after 1-3 CSM orbits
[17:48:56] <thewonderidiot> fun :D
[17:49:17] <indy91> https://www.nasa.gov/wp-content/uploads/static/history/afj/ap11fj/a11cmpsb/a11-cmpsb-095-36.jpg
[17:49:39] <indy91> I see "CSM above" going as high as 350 NM there
[17:49:52] <indy91> so from 60x60 orbit to up to 60x410 for a bit
[17:49:57] <thewonderidiot> wow, yeah
[17:50:05] <thewonderidiot> that would be fun to fly in NASSP
[17:50:16] <indy91> yep :D
[17:50:24] <indy91> and I don't think it's even super complex to implement
[17:50:48] <indy91> I already know from the "optimum CSI" option that they sort of put the whole SPQ in a wrapper function for this
[17:51:13] <indy91> so the iteration on the required dwell DV is external and fairly simple, just needs a good initial guess
[17:52:00] <indy91> +340 ft/s for dwell init, -340 ft/s for dwell termination. That's a bunch of DV gone :D
[17:53:41] <thewonderidiot> oof, yeah it is
[17:54:02] <indy91> later missions combine the dwell termination with the CSI maneuver. That is one fewer burn and can therefore be calculated with the DKI
[17:54:46] <indy91> but this Apollo 11 version has one maneuver too much
[17:55:08] <indy91> so that needs to become a special new SPQ feature, hopefully soon :D
[18:06:40] <indy91> actually, with creative use the Skylab profile in the DKI, I wonder if it can be calculated already...
[18:06:45] <indy91> use of*
[20:09:48] <indy91> night!
[16:28:48] <indy91> good evening
[16:34:30] <thewonderidiot> morning!
[16:35:03] <indy91> what's up?
[16:37:16] <thewonderidiot> the CDU showed really great signs of life yesterday
[16:37:57] <thewonderidiot> I hooked up a 28V reference without any resolvers, and the read counter started seeking around change coarse switches to try to null the sum, which wasn't possible
[16:38:12] <thewonderidiot> and the resulting coarse error waveform matches exactly what is predicted by my simulator, down to the transients :D
[16:41:28] <thewonderidiot> but it's getting to the point where I'm getting nervous wiring more stuff up to the connector with just loose contacts, so I think I'm going to step back and design the connector board for it
[16:41:46] <thewonderidiot> or at least the metal frame that I can press-fit the contacts into instead of having them totally loose
[16:42:18] <thewonderidiot> adding more and more pins the way I am is just asking for a wiring error or a damaged contact haha
[16:42:48] <indy91> haha yeah. You got an expected error, that is good. Now to feed it some more useful data!
[16:44:03] <thewonderidiot> yep! but that needs at least 8 more wires to the main connector, a transformer, two potentiometers, and two resolvers
[16:44:11] <thewonderidiot> it's a big last step :P
[16:50:07] <n7275> hey guys
[16:53:40] <thewonderidiot> yo
[17:10:12] <indy91> hey Matt