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L15[02:05:04] <Althego> spacex, get your ... together, do that ... static fire
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L21[03:36:26] <Mat2ch> Althego: no.
L22[03:36:28] <Mat2ch> :D
L23[03:38:03] <Mat2ch> Althego: Monday
L24[03:38:29] <Althego> just as it was on saturday, friday, tuesday
L25[03:38:57] <Mat2ch> But now the fuel loading was succesful
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L36[04:24:22] <TheKosmonaut> Althego: like was said before. The Universe won't let FH progress
L37[04:24:58] <Althego> change it to doctor doom
L38[04:25:11] <Althego> "the doom wont let the fh to progress"
L39[04:29:36] <Althego> (doctor universe is a character in the spinnerette webcomic, while doctor doom is well known marvel character)
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L41[04:35:40] <Althego> retreived 4 kerbals, none of them are scientists
L42[04:35:45] <Althego> i guess i will just edit them
L43[04:35:57] <Althego> i need at least 1 spare scientist
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L50[05:25:38] <APlayer> Hey there!
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L53[05:27:09] <nick1> hi guys
L54[05:27:25] <nick1> has anyone experienced problems with f8 saving?
L55[05:27:57] <nick1> my f8 saves wont load, the last 3 will not load and i'm making new ones to test and none of them load, i get a message
L56[05:28:17] <nick1> (filename) does not exist
L57[05:29:02] <nick1> no idea what to do. another fun sunday filled with ksp errors
L58[05:29:38] <APlayer> Perhaps it's because you are looking for F9 saves? ;-)
L59[05:32:25] <nick1> KISS is Kerbal Improved Save System. i don't use f5/f9 unless it's at mission starts
L60[05:32:39] <nick1> i've used f8 for years
L61[05:32:54] <APlayer> So the F8 saves are a mod thing?
L62[05:33:45] <nick1> yeah, don't you use it? it keep all saves seperate, you name each one, so you can go back to any point
L63[05:34:19] <APlayer> You can use Alt-F9 in stock to do that, and no, I don't use it
L64[05:34:44] <nick1> what happens when pressing alt+f9?
L65[05:35:19] <APlayer> You get a prompt to name your stock quicksave, and using Alt-F5 you can load it from a menu
L66[05:35:38] <APlayer> This way, you can have multiple quicksaves without mods
L67[05:36:49] <nick1> interesting, never knew that, i was using KISS.
L68[05:36:54] <Althego> hehe
L69[05:37:10] <nick1> i'll try that, i mean i think i've still lost my l ast 3 saves which is very annoying but i'll try other solutions
L70[05:37:14] <nick1> :)
L71[05:37:18] <Althego> the alt f9-f5 was always part of the game since i started to play in 2014
L72[05:37:46] <APlayer> As for KISS, you may have broken it with another mod
L73[05:38:07] <APlayer> Have you installed any new mods recently, around the time it stopped working?
L74[05:38:22] <APlayer> Or even more, have you updated your KSP?
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L92[07:24:32] <oren> https://imgur.com/0Cbc6wm
L93[07:24:32] <kmath> https://i.imgur.com/0Cbc6wm.jpg
L94[07:26:29] <APlayer> Nice one!
L95[07:34:33] <oren> this is the duna train
L96[07:35:41] <oren> https://imgur.com/uAy7EJW
L97[07:35:41] <kmath> https://i.imgur.com/uAy7EJW.png
L98[07:36:53] <APlayer> Looks awesome!
L99[07:37:06] <oren> turns like a blue whale though
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L101[07:50:10] <APlayer> There is a certain bit of fun to such slow responding craft
L102[07:50:17] <APlayer> What's the TWR?
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L106[08:13:07] <oren> APlayer: not sure, it's not fully fueled yet. still need to send a couple more fuel tankers down from the Mun
L107[08:13:28] <APlayer> Uh, calculator? LOL
L108[08:14:09] <APlayer> J/K, I am just not used anymore to not calculating such things in advance
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L110[08:17:06] <oren> APlayer: I sorta guesstimated that it would have enough delta v but then I added some extra payload (a lander) so I had to add extra fuel tanks too
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L112[08:20:21] <oren> so the space train is longer than I planned
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L114[08:26:44] <Althego> hehe, i created the fast atmo probe. i put an intake, probe core, battery, tank, smallest jet, and 4 active winglets on a thing. but this cant get anywhere fast, so i put it on the nose of a rocket. no obvious way to connect it, i offset a radial decoupler behind the engine, and offset the rocket below the whole thing
L115[08:27:10] <Althego> the rocket gets it anywhere on kerbin fast, then it can fly around to collect the data of the points
L116[08:27:23] <Althego> and i can just let it crash or recover on water
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L118[08:33:53] <Althego> eh, the next one is above 18 km, this silly jet probe cant fly that high
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L134[09:28:46] <Althego> hehe wolfie6020 strikes again. demonstrates with a drone flying in circles that the sun would not set on a flat earth
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L137[10:01:50] <madmerlyn> ha hit Crisis, and going to win the war through atrition, I managed to jump their transport fleet before it could catch up to the armada, and have set up a "blockade" at their main jump point that destroys transport reinforcements, so the dumb AI is just sitting there parked over a planet in another system waiting for more troops to show up
L138[10:10:51] <zilti> Ah dang. My game lags... 137 mods, but it's mostly parts stuff, how does this happen?
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L141[10:24:18] <UmbralRaptor> Craft with lots of parts?
L142[10:25:48] <zilti> No, barely any parts. Engine, four fins, tank, avionics and nose cone.
L143[10:26:45] <zilti> Also, I have a Ryzen 1800X CPU, and a Radeon RX580 card
L144[10:27:19] <zilti> Mods: https://qbin.io/scvz8bn
L145[10:28:15] <zilti> Maybe there are known slow mods?
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L153[11:24:37] <ve2dmn> zilti: define 'lag'. Because if it's a specific type, I may have a fix
L154[11:24:41] <ve2dmn> <may<
L155[11:25:01] <ve2dmn> "May"
L156[11:25:08] <madmerlyn> yay I survived the awakened empire
L157[11:25:29] <madmerlyn> no war demands enforced, I kept their warscore down by liberating planets after they moved on to another system heh
L158[11:25:39] <ve2dmn> madmerlyn: I didn't survive my dinner
L159[11:25:57] <madmerlyn> helped that I had just vassalized a small empire and they were my buffer
L160[11:26:15] <FltAdmVonSpiz> the problem with Crises is they are very knife edgy
L161[11:26:20] <FltAdmVonSpiz> if your crisis hits early then you're dead
L162[11:26:23] <FltAdmVonSpiz> if it hits late you steamroll it
L163[11:26:40] <FltAdmVonSpiz> and combat in general is very snowball-y
L164[11:26:51] <FltAdmVonSpiz> since its fully Lanchestrian
L165[11:27:40] <ve2dmn> FltAdmVonSpiz: the next update is trying to adress that
L166[11:27:52] <FltAdmVonSpiz> yeah but the restrictions are kind of arbitrary
L167[11:30:19] <zilti> ve2dmn: as in the in-game time passes about half as fast as it should
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L169[11:31:18] <zilti> ve2dmn: as soon as I'm on e.g. the launchpad
L170[11:31:19] <ve2dmn> zilti: ha. then it's not the one i'm used to, which is a 1sec of 'freeze' followed by 4sec of normal
L171[11:31:44] <zilti> ve2dmn: what was the reason for yours? Maybe it's related
L172[11:32:00] <ve2dmn> Garbage collection
L173[11:33:15] <ve2dmn> btw, you have Enhanced textures and EVE mods in that list... it's far from just 'mostly parts'
L174[11:33:37] <zilti> But textures shouldn't exactly slow down the simulation
L175[11:34:08] <ve2dmn> If you run out of memory they do. a lot
L176[11:34:21] <zilti> I have 32GB
L177[11:34:45] <ve2dmn> I also have 32GB, but I still have issues with Garbage collection...
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L179[11:35:12] <ve2dmn> try http://forum.kerbalspaceprogram.com/index.php?/topic/139128-memgraph
L180[11:36:06] <ve2dmn> It will at least show you a graph of the C# Heap
L181[11:36:25] <zilti> Oh, I'll install it.
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L183[11:37:19] <ve2dmn> see those read spikes? http://i.imgur.com/tUUtX2i.png
L184[11:37:42] <zilti> yes
L185[11:37:53] <Fluburtur> nice triangle thing
L186[11:38:01] <ve2dmn> This is what I get. Garbage Collection takes took long and the entire simulation is 'frozen' while it runs
L187[11:38:35] <ve2dmn> (not my screenshot, but same issue)
L188[11:39:32] <ve2dmn> zilti: but I would disable the Visual-Only mods and see if it changes anything...
L189[11:39:46] <Azander> so how to fix such things ?
L190[11:40:10] <Azander> I have similar issue, but no visual mods installed (only 78 others)
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L192[11:40:13] <zilti> Azander: probably by not using Unity to code your game in the first place
L193[11:40:24] <Azander> Not my call, but yeah
L194[11:40:31] <ve2dmn> ... it might also be Video Card Memory issues, but I doubt it. A LOT. Like 0.0001% chance. But you never know since mods varies a lot in quality
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L196[11:40:38] <ve2dmn> Azander: see the link above
L197[11:41:17] <Azander> I've read the thread, it doesn't tell me which mod is the culprit
L198[11:41:29] <ve2dmn> Memgraph. It helped me by 'padding' the heap with unused memory. Went from 1 freeze every 5sec to 1 freeze every 25-30sec
L199[11:41:41] <Azander> hmmmm
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L201[11:42:26] <ve2dmn> Azander: It won't tell you which mod is the problem. For that, you'll need to experiement by backing up KSP and unistalling mods until it works
L202[11:43:06] <Azander> lookng at my resource manager, I THINK my issue may be slow Disk I/O :( system hangs when it goes to write the update to the persistance file
L203[11:43:52] <ve2dmn> Doing a bisect is probably the only sure way to know
L204[11:43:58] * Azander nods
L205[11:44:06] <Azander> been working on that a little bit at a time
L206[11:44:06] <ve2dmn> https://git-scm.com/docs/git-bisect
L207[11:44:22] <ve2dmn> Too bad I can't track my KSP install with git or similar
L208[11:44:31] <Azander> agreed
L209[11:44:37] <Azander> though that would be interesting
L210[11:45:01] <Azander> gitFS might let you do it
L211[11:45:09] <ve2dmn> ZFS provides 'some' of that functionnality
L212[11:45:10] <Azander> haven't looked into that much, yet
L213[11:45:54] <ve2dmn> too bad ZFS is licence restricted :/
L214[11:47:10] <ve2dmn> currently trying to 'finish' Anno2205 before I go back to KSP
L215[11:47:44] <ve2dmn> I got bored of it much faster then I though...
L216[11:48:38] <ve2dmn> Too repetitive
L217[11:49:16] * Azander has been playing KSP since 1.0 came out... every day. I'm doing my first rescue mission today.
L218[11:49:39] <ve2dmn> Azander: I never made it to Eeloo
L219[11:49:50] <Azander> MJ doesn't help much with thoise :)
L220[11:49:55] <ve2dmn> Steam says I played 1648h
L221[11:50:28] <Azander> steam says I've played less than 900 hours, but since I don't run mine thruoghthe steam interface (moved it so autdates won't screw it up) I doubt it's accurate
L222[11:50:45] <Azander> *auto updates
L223[11:54:32] <zilti> The MemGraph output makes no sense. It says "max: 2664 MB", but task manager says KSP is using 14775 MB
L224[11:54:44] <ve2dmn> That's just the Heap
L225[12:02:33] <Azander> Dangit, didn't get to my scientists in time, they just fried getting to close to the sun :(
L226[12:03:23] <Azander> rescue missing after kraken blew up my station orbiting Kerbin
L227[12:05:46] <Azander> lost a pilot to reentry before I could get my rescue launch into orbit, 2 scientists to the sun, saved Valentina, now after the engineer :/
L228[12:05:57] <Azander> before he slams into minmus
L229[12:06:07] <zilti> Hmm task manager says hdd access is 100%
L230[12:06:28] <Azander> mine says that a lot when the persistance file gets updated
L231[12:07:39] <zilti> It seems to be constantly at 100% though...
L232[12:08:52] <Fluburtur> Draconiator I hear you like VTOLs https://cdn.discordapp.com/attachments/254984631512858634/404698816072384524/20180121190517_1.jpg
L233[12:10:34] <zilti> But no red lines on the MemGraph
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L235[12:25:04] *** Dozeman979 is now known as Dman979
L236[12:32:25] <Neal> youtube sends your first ad check for earning $50. I better get that last 53 cents before I get cut off from ad revenue on Feb.20! https://i.imgur.com/g4qKNGw.png
L237[12:39:02] <Azander> sounds reasonable to me
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L240[12:40:59] <Neal> I've got a lot of unedited GoPro footage lying around so I'll probably just upload some clips of that 3x a week
L241[12:41:03] <Neal> should get me over
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L248[13:00:07] <Fluburtur> https://cdn.discordapp.com/attachments/231106102693986314/404711679817940993/unknown.png
L249[13:05:18] <Neal> I think you're missing something
L250[13:06:01] <Neal> tail rotor???
L251[13:08:51] <tawny> why do the landing skis have wheels on them
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L255[13:15:21] <Fluburtur> https://www.youtube.com/watch?v=mD2xXNg_Vy8
L256[13:15:21] <kmath> YouTube - Too Many Zooz
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L260[13:19:17] <Neal> tawny, I think those are used to move the heli around on the ground when its not running
L261[13:19:29] <tawny> oh huh, neat
L262[13:31:32] <JCB> the wheels can jack down a little, since they sit under the center of mass, its easy to balance the heli, and move it around. Otherwise, they need to have a seperate dolly system..
L263[13:32:06] <JCB> fluburtur which sim btw?
L264[13:32:21] <Fluburtur> IL2
L265[13:33:48] <JCB> ah cool
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L271[13:42:18] <kubi> hola
L272[13:42:24] <kubi> no 1.4 yet?
L273[13:45:14] <Fluburtur> https://cdn.discordapp.com/attachments/231106102693986314/404723066174832641/26992045_2440626312829689_8361778057055973723_n.png
L274[13:46:01] <Neal> you disgust me
L275[13:46:39] <iamfishhead> You monster
L276[13:47:40] <sandbox> which end would you start at?
L277[13:48:09] <Azander> don't fear the bannana
L278[13:48:27] <JCB> eh.. I usually just snap it in half.. the peal
L279[13:48:34] <JCB> .. then peal
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L284[13:57:22] <Neal> anyone remember that sounding rocket that had an ion generator near the nose to reduce drag? I am trying to look it up but can't find much info
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L286[13:58:27] <kubi> http://www.esa.int/esapub/hsr/HSR_38.pdf
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L296[15:06:51] <Fluburtur> anyone knows if amazon writes what is in the package on the paper?
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L308[15:37:32] <Draconiator> Flub, I get stuff from Amazon all the time, no they do not.
L309[15:38:35] <Fluburtur> ok good
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L312[15:46:44] <Draconiator> so 4 Juno engines in VTOL config can lift about 6.1 tons.
L313[15:47:25] <Fluburtur> you seen the one I made?
L314[15:48:17] <Draconiator> No I haven't.
L315[15:48:53] <Fluburtur> I tagged you
L316[15:49:01] <Fluburtur> https://cdn.discordapp.com/attachments/254984631512858634/404698816072384524/20180121190517_1.jpg
L317[15:55:41] <Draconiator> Ooooh you got it with just 2?
L318[15:57:09] <Neal> how bad of an idea is a taildragger in KSP
L319[15:58:39] <Fluburtur> yeah but it has like 60 units of fuel
L320[15:58:43] <Fluburtur> otherwise it's too heavy
L321[15:58:51] <Draconiator> Not bad at all if you're going for an old plane.
L322[15:59:05] <Draconiator> https://i.gyazo.com/4502fb8f356bb6ebee02a38b402cb963.png - still trying to perfect mine
L323[15:59:14] <Fluburtur> https://cdn.discordapp.com/attachments/186186669324500993/404756816245817344/20180121224255_1.jpg
L324[15:59:19] <Neal> my wing layout and CG make anything other than a taildragger impossible
L325[16:01:55] <Neal> oops broke off my wingtip on a water tower
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L333[16:54:15] <JCB> hmm... mini rocket launching...
L334[16:58:15] <Neal> leaving StackOverflow tabs open on chrome for a few days causes massive memory leaks o_o
L335[16:58:55] <Neal> https://i.imgur.com/yhfHSWK.png
L336[16:59:06] <Neal> 142% cpu usage as well
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L345[17:23:58] <Mathuin> I was entertained to learn that taildragger gear is "conventional landing gear" even though it hasn't been the convention for quite some time.
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L347[17:24:15] <Supernovy> Conventional in what sense?
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L350[17:25:46] <Mathuin> https://en.wikipedia.org/wiki/Conventional_landing_gear
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L353[18:10:17] <FltAdmVonSpiz> well yeah, terminology is near impossible to change
L354[18:10:21] <FltAdmVonSpiz> I see this in the nuclear industry
L355[18:10:44] <FltAdmVonSpiz> once people start using it its almost impossible to make them stop
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L370[19:11:42] * UmbralRaptor stares at the Kerbal Chronicles.
L371[19:12:11] * UmbralRaptor ?? whoever wrote "rye" when they meant "wry"
L372[19:16:41] <Mathuin> I see it with literature. "Post-modern" etc
L373[19:18:32] <UmbralRaptor> There were some other things, so I'm going to go with bad copy editing.
L374[19:21:40] <UmbralRaptor> Anyway, it's a PDF on kerbalspaceprogram.com for some reason.
L375[19:24:57] <Draconiator> Electron had to overcome lotsa hurdles for their rocket...I did try a 0.625 meter launcher in KSP, and the think is REALLY unstable even with fins.
L376[19:25:23] <UmbralRaptor> uh
L377[19:28:34] <UmbralRaptor> Anyway, the PDF is a neat idea, but the execution hurts. :(
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L386[20:10:51] <Kwirki1ee> fellow rocket nerds, I ask your help in a mathematical sanity check. I'm running some numbers backwards and things aren't working out as I expect
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L388[20:11:57] <Kwirki1ee> rocket with final mass of 3 tonnes; target dv of 7.5km/s; burn time of 96 seconds; engine efficiency 350 seconds
L389[20:12:03] *** Kwirki1ee is now known as KwirkyJ
L390[20:12:53] <KwirkyJ> with this information, calculate (1) rocket inital mass, (2) acceleration, velocity, and displacement functions of time for the burn
L391[20:13:30] <KwirkyJ> mass is the easy part; I get about 6.853 tonnes
L392[20:14:23] <KwirkyJ> (intermediary steps engine thrust 128kN)
L393[20:15:06] <Supernovy> Can we assume the burn rate is constant?
L394[20:15:12] <Supernovy> and the thrust?
L395[20:15:26] <KwirkyJ> yup
L396[20:16:02] <Supernovy> well then Mass(time) is linear. So, acceleration(time) is linear as force is constant.
L397[20:16:15] <Supernovy> then integrate
L398[20:16:53] <KwirkyJ> the acceleration curve I compute at approximately a(t) = 23.2222t + 19.4444; making v(t) = 23.222/2t^2 + 19.444t, yes? but solving v(96) does not equal the target tv I started with
L399[20:17:11] <Supernovy> you forgot the +c
L400[20:17:24] <KwirkyJ> v(0) = 0?
L401[20:17:44] <KwirkyJ> s/tv/dv/
L402[20:17:52] <Supernovy> Clearly it isn't if you don't get the target delta-v you started with.
L403[20:18:11] <Supernovy> or maybe it is.
L404[20:18:44] <Supernovy> How'd you get thrust?
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L407[20:18:53] <KwirkyJ> I'm assuming this is in a relative reference frame, fo v(0) (and d(0)) should be 0
L408[20:19:21] <KwirkyJ> from Isp, I calculated Ve at ~3418m/s
L409[20:19:37] <Supernovy> well if we're just looking at delta v
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L411[20:19:55] <KwirkyJ> assuming constant fuel consumption, that's 37.323kg/s
L412[20:20:14] <KwirkyJ> Ve * fuel rate should equal force of thrust, yes?
L413[20:20:27] <Supernovy> 350x9.8 = 3430
L414[20:20:28] <KwirkyJ> thus, ~128kN
L415[20:20:43] <KwirkyJ> my unit of gravity is slightly different. (yay, game intervals)
L416[20:20:55] <KwirkyJ> g0' := 9.765625
L417[20:21:30] <KwirkyJ> but close enough for government work. my v(t) function is of by over a factor of 2
L418[20:21:34] <KwirkyJ> *off
L419[20:21:35] <Supernovy> that's still 9.8 to 2sf
L420[20:21:54] <KwirkyJ> 2sf?
L421[20:22:21] <Supernovy> all the initial figures are to 2 significant figures at maximum
L422[20:22:30] <KwirkyJ> ah. agreed
L423[20:22:34] <Supernovy> whatever, it probably doesn't matter
L424[20:23:42] <Supernovy> exhaust velocity times mass flow rate is thrust, that bit's correct
L425[20:24:38] <Supernovy> Did you make an error in solving for initial mass?
L426[20:25:38] <KwirkyJ> I don't *think* so... 7500m/s = (3418s) m0/3000 m0 -> 7500*3000/3418?
L427[20:26:22] <KwirkyJ> -> 6582kg
L428[20:26:27] <Supernovy> dV = Ve*ln(m_w/m_d) => dV/Ve = ln(m_w/m_d) => e^(dV/Ve) = m_w/m_d => m_d*e^(dV/Ve) = m_w
L429[20:26:37] <KwirkyJ> ah! ln
L430[20:27:00] <KwirkyJ> I thought it seemed really low
L431[20:27:14] <Supernovy> => 3*e^(7500/3430) = m_w
L432[20:27:40] <KwirkyJ> 26.714... tonnes?
L433[20:28:11] <Supernovy> For 7.5 km/s delta-v, sure.
L434[20:28:27] <KwirkyJ> that's probably it, then
L435[20:28:29] <Supernovy> and yeah 3 is in tonnes, and 7500 and 3430 are in m/s
L436[20:29:15] <KwirkyJ> I'll re-run the numbers with that fixed inital mass. thanks!
L437[20:29:38] <Supernovy> 350s Isp, yeah that's reasonable
L438[20:30:31] <Supernovy> approx 10% payload
L439[20:31:05] <KwirkyJ> yup. I was very askance of the about 30%, but didn't make the connection to re-check my rocket equation
L440[20:31:17] <KwirkyJ> er, 40%
L441[20:31:19] <Supernovy> also forgot to remind you that Isp->Ve uses 'standard gravity' and is independent of what gravity actually is.
L442[20:31:34] <KwirkyJ> ah. good catch
L443[20:31:57] <UmbralRaptor> KwirkyJ!
L444[20:32:09] <KwirkyJ> UmbralRaptor! *POMF*
L445[20:32:51] <UmbralRaptor> ouf
L446[20:35:41] <UmbralRaptor> Anyway, I did some shenanigans for analytic solutions to the scrollback at one point. https://drive.google.com/file/d/0Bxef3KjILrVraldBdGJkY3EwdUU/view?usp=drivesdk
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L448[20:41:27] <KwirkyJ> dv = 7500m/s; v0, d0 = 0; m1 = 3000kg; Isp = 350s
L449[20:41:46] <KwirkyJ> Isp*g0 = Ve 3432m/s
L450[20:42:07] <KwirkyJ> with rocket equation, m0 = 26680kg
L451[20:42:30] <KwirkyJ> fuel mass = 23680kg
L452[20:42:55] <KwirkyJ> fuel rate (burn 96 seconds) = ~278kg/s
L453[20:43:34] <KwirkyJ> correction: fuel rate = 246.666kg/s
L454[20:44:38] <Supernovy> ~850kN?
L455[20:44:45] <KwirkyJ> fuel rate * Ve = thrust = 848kN
L456[20:44:50] <JCB> @.@
L457[20:46:02] <KwirkyJ> a0 = ~32m/s^2, a1 = ~283m/s^2
L458[20:46:05] <Supernovy> You okay there, JCB?
L459[20:46:43] <Supernovy> That's some kind of acceleration right there. Almost like a rocket.
L460[20:46:52] <KwirkyJ> a(t) = 252t + 32
L461[20:47:04] <KwirkyJ> er, 251t
L462[20:47:16] <JCB> eh... depends. headache+forgot was on here still+trying to catch up on things....
L463[20:48:32] <KwirkyJ> v(t) = 251/2t^2 + 32t + v0 ?
L464[20:49:11] <UmbralRaptor> Designing something like Sprint missile?
L465[20:49:20] <KwirkyJ> kinda, yeah
L466[20:50:10] <KwirkyJ> but v(96) = ...1 159 680 m/s? != 7500
L467[20:50:20] <UmbralRaptor> m(t) = m0-?*t
L468[20:50:44] <KwirkyJ> not sure that's displaying properly for me
L469[20:50:45] <UmbralRaptor> a(t) = F/(m0-?*t)
L470[20:50:54] <Supernovy> it's m-dot
L471[20:51:01] <UmbralRaptor> ^
L472[20:52:01] <KwirkyJ> ?
L473[20:52:06] <Supernovy> 283m/s/s is correct for the dry mass acceleration
L474[20:52:08] <UmbralRaptor> Assuming constant thrust, acceleration is more like 1/x than x.
L475[20:52:27] <Supernovy> m-dot, mass flow rate
L476[20:52:36] <KwirkyJ> mm
L477[20:52:38] <UmbralRaptor> KwirkyJ: m-dot as in a slightly silly way of writing dm/dt
L478[20:54:23] <KwirkyJ> so my initial acceleration is way off?
L479[20:54:36] <KwirkyJ> or, the nature of the acceleration curve?
L480[20:55:11] <UmbralRaptor> The nature of the curve.
L481[20:56:23] <Supernovy> a = F/m. since m varies constantly with time, it might as well be F * 1/t
L482[20:56:45] <KwirkyJ> yup. just convinced myself of that
L483[20:56:56] <KwirkyJ> (cor, tha's dense)
L484[21:00:01] <KwirkyJ> a(t) = 848/(26680-247t) in this case? 848kN thrust, 26680 m0, 247kg/s m-dot
L485[21:02:57] <Supernovy> looks alright
L486[21:09:57] <KwirkyJ> v(t) would then be its integral... v(t) = -848/247 log(26680-247t)?
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L488[21:12:21] <KwirkyJ> (+c)
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L490[21:16:59] <KwirkyJ> ah, 848 is 848000
L491[21:17:27] <KwirkyJ> c -> 34.99... call it 35
L492[21:18:05] <KwirkyJ> v(96) then becomes 7550m/s; very near the dv expected
L493[21:18:38] <KwirkyJ> thank you both for your input
L494[21:21:35] <UmbralRaptor> yay
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L511[22:43:37] <JCB> hmm.. factorio.. you can power the train by rocket fuel... eh..
L512[22:44:04] <JCB> makes it go 180% as fast... hmm..
L513[22:45:55] <KwirkyJ> "We forgot to put an endcap on that belt... yes, there is solid fuel leaking everywhere"
L514[22:48:23] <JCB> huh.. wheres that come from?
L515[22:49:16] <KwirkyJ> my brain, mixing the belts in factorio (which don't spill, for good gameplay reasons) and a throwback to the ;mission generator, with a "There is solid fuel leaking everywhere!" outcome
L516[22:50:47] <KwirkyJ> with solid fuel being both in factorio and KSP, serving roughly different purposes
L517[22:56:13] <JCB> ah ya.. the guys were using solid fuel to run the train and tanks
L518[22:56:40] <JCB> I was watching Guude and his friends playing over on youtube...
L519[22:57:17] <KwirkyJ> Solid fuel is (or, was) more efficient in terms of inputs
L520[22:59:02] <JCB> can't turn it off though...
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L527[23:30:39] <Glass|phone> monorail snowplough https://twitter.com/jza80supraakb48/status/955219803148492800
L528[23:30:39] <kmath> <jza80supraakb48> ??????????????????????????(?) https://t.co/wIh1TR6OTc
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L535[23:58:46] <GlsFrg|phone> ??
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