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L3[00:24:06] <JVFoxy> simple rocket, single crew, docking port jr. on the nose. Was built for a 'station building mission'. I don't remember why I named it 'Thumbtack' a while ago.
L4[00:24:50] <JVFoxy> although, now I think about it.... pinning a ship to the side of a station, kind of like pushing a thumbtack into the wall?
L5[00:26:24] <JVFoxy> oh wait.. named that because of the shape, was meant to go with a booster already in orbit. Frontier was meant for the station, RCS system
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L7[01:03:30] <Althego> launch in less than 2 hours
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L11[01:38:07] <Eddi|zuHause> lunch in less than 2 hours would be a tiny bit early? :p
L12[01:39:03] <Althego> not too much
L13[01:39:24] <Althego> when i dont eat breakfast i eat lunch at 11
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L15[01:42:33] <Althego> hehe godless engineer with flat earth again, the video he was talking aboutaccidentally had some ksp pictures in it, because it was demonstrating how you cant find real pictures of the solar system
L16[01:44:38] <Rolf> lol
L17[01:44:41] <JVFoxy> .... pictures of the solar system, as in with planets moving around on tracks?
L18[01:44:52] <Rolf> or plates on train tracks lol
L19[01:45:00] <Althego> you cant have that anyway, small specks of dust moving in the huge void
L20[01:45:17] <Rolf> why not, as well as go all way and have stars really just chumbs on black table sheet train tracks is on
L21[01:45:54] <JVFoxy> sun is just really on a big machine, each night it gets transported underground back to the starting point
L22[01:47:06] <JVFoxy> actually.. come to think of it, book Steal Beach, the city underground on the moon did have a fake sun that went overhead on special tracks
L23[01:48:16] <JVFoxy> people that did have a view out over the surface, was so much garbage, people just dumped it outside. No air for wind, or climate, it just sat around forever, getting sun blasted
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L25[02:04:23] <Rolf> steel beach?
L26[02:04:51] <Althego> what there is already some livestream going on. cobesats on this launch too
L27[02:07:13] <JVFoxy> Rolf book by John Varley... setting is on the moon, something about an alien race making Earth unlivable, so human population moved to the Moon...
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L29[02:07:30] <Rolf> yeah I remember that
L30[02:07:43] <Rolf> they took earth and jupier
L31[02:07:45] <JVFoxy> or... some alien race killed everyone on Earth, just those on the moon were left.. I don't remember, its been a while
L32[02:08:01] <Rolf> most earth people died due to sudden loss of techology
L33[02:08:15] <Rolf> aliens just dissolved everything manmade
L34[02:08:37] <Rolf> and any human who dare go there dies
L35[02:08:43] <JVFoxy> I know it wasn't talked about much.. just enough to place the setting
L36[02:09:59] <JVFoxy> later on, he talked about Heinlein tech, which I hadn't even ehard of up till then
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L38[02:30:51] <Althego> it is on https://www.youtube.com/watch?v=wwMDvPCGeE0
L39[02:31:05] <Althego> hehe itmestamp is in utc
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L43[02:50:39] <Althego> this will be huge http://spaceflight.com/sso-a/
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L45[02:51:28] <Althego> although they will have practically the same orbit
L46[02:51:59] <Althego> looks quite kerbal
L47[02:53:54] <Althego> perfect, this is monday evening for me, so i can watch the deployment too
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L50[02:56:01] <JVFoxy> 'rideshare'.... ok.. so not just rockets now huh?
L51[02:56:28] <JVFoxy> term wise at least
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L53[02:57:48] <JVFoxy> geez... 49 cube sat.... so going to shotgun the sky with stuff huh?
L54[03:00:49] <JVFoxy> .....
L55[03:02:25] <JVFoxy> oh flight to ISS
L56[03:03:12] <Althego> and docking of the progress is coming up in less than a day
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L58[03:06:00] <Althego> hehe why does it have the fairing on
L59[03:06:04] <Althego> above 100 km
L60[03:07:00] <JVFoxy> second stage solid huh...
L61[03:07:11] <Althego> i never understand that
L62[03:07:12] <JVFoxy> for simplicity?
L63[03:07:19] <Althego> ok, they are simple and probably not fail
L64[03:07:54] <Althego> i like the perigee readout
L65[03:07:59] <Althego> you can imagine the orbit ksp like
L66[03:08:06] <JVFoxy> wonder what kind of delta V deviation on the fuel is factored in..
L67[03:08:07] <Althego> it is still below the surface
L68[03:08:43] <Althego> and the typical burning down happens
L69[03:08:47] <Althego> i rarely do that in ksp
L70[03:08:57] <JVFoxy> LF rocekts you can sort of throttle... not so much on the solid.. those things are built to spec, long time before launch. Then its... kick it, hope it doesn't go too far off as it burns
L71[03:09:02] <Althego> it means this much that you cant throttle in real life
L72[03:09:54] <Althego> and as usual they never tell us how they get rid of that stage in orbit
L73[03:10:18] <Althego> 278x207 km it will be there for a long time
L74[03:11:06] <Althego> strangely while 100k people were watching spacex, only 4500 are interested in this
L75[03:13:07] <JVFoxy> did it show per and ap..?
L76[03:13:23] <JVFoxy> ah.. ya series of burns
L77[03:13:30] <Althego> series of tubes :)
L78[03:13:41] <JVFoxy> SRB will drop eventually... still gotta finalize the circularization
L79[03:14:21] <Althego> yes after a while
L80[03:14:30] <Althego> at least the spacex second stage can make a deorbit burn
L81[03:16:39] <Althego> stream over
L82[03:16:42] <JVFoxy> I noticed the stage sep, RCS started it into a tumble...
L83[03:16:59] <Althego> or not. maybe as in apollo it helped to separate
L84[03:17:25] <JVFoxy> apollo needed ullage to fire engines
L85[03:17:51] <JVFoxy> the docking target for the gemini, they had special fuel bellows to help with restarts
L86[03:18:21] <Althego> ok, the solid does not need that
L87[03:18:47] <JVFoxy> solid.. no
L88[03:19:30] <JVFoxy> does need a pretty strong ignition though.
L89[03:19:51] <JVFoxy> and maybe a touch of prediction
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L91[03:27:33] <JVFoxy> ... take pressure reading at Scott's Secret... still kept the report from Scott's Sanity from a while back...
L92[03:27:43] <Althego> hehe
L93[03:27:51] <Althego> are they all alliterating?
L94[03:29:35] <JVFoxy> I don't know.. just the fact that Scott came up twice already on this one career.
L95[03:29:49] <JVFoxy> pretty close to the center
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L97[03:34:04] <Althego> https://i.redd.it/vyo5mtrp4ly11.png
L98[03:34:15] <Althego> https://i.redd.it/fnqod3eq5ny11.png
L99[03:35:53] <JVFoxy> nice
L100[03:37:40] <Althego> from ksp twitter
L101[03:40:07] <JVFoxy> I got a bit into flight sim... a bit later on. It wasn't till a little past that I started seeing some of the 'not so good' stuff about it. The simple magic of just having a flight sim period back in those days.
L102[03:40:46] <JVFoxy> now you have ultra-realisim.. with a few various products, flight-sim sorta got buried
L103[03:41:53] <JVFoxy> KSP is fun to mess with, there been times I wish I had a few specific planes to mess around in it... not so much fighter jockey myself, there are soem aviation favs I do have
L104[03:42:14] <Gasher> one of the first games i had on PC was flight sim - Red Baron 2
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L106[03:44:40] <JVFoxy> I played around with Flightsim 1... I think 2 as well. I still remember 4 and Flightshop for Flightsim.
L107[03:45:01] <JVFoxy> downloading region maps made by other players from library database.
L108[03:45:16] <JVFoxy> Even had UFO, I still have Spacesim
L109[03:47:50] <JVFoxy> heh.. before all that, 'Jet'... also had Chuck Yeager's Air combat, may even still have the cassette where he talks about things
L110[03:50:10] <JVFoxy> .... oh according to net, it was included in advanced flight trainer 2.0.... eh its been a while.
L111[03:53:06] <Althego> flight sim http://www.warpology.com/x/VIDEO0015.mp4
L112[03:53:09] <Althego> they really suck
L113[03:54:26] <Althego> later it turned out that playing ksp helps you to fly helicopters, and even GA is flyable if i turn off the computerized help, i realized that after trying the older GS what i could fly easily
L114[03:57:14] <JVFoxy> I've helped at the museum of flight. They took in a GA trainer from the 70s or so, made by Singer called the GAT-1 (general aviation trainer 1)
L115[03:57:35] <Althego> probably other GA :)
L116[03:57:47] <Althego> this has been flying for the last few years
L117[03:57:47] <JVFoxy> turns out someone blew out one of the control transistors that runs the motor for banking.. putting all the power load on the second.
L118[03:57:56] <Rokker> MUSEUM
L119[03:58:02] <Althego> argh
L120[03:58:34] <JVFoxy> then later... I heard they wanted to computerize it but then later realized it would have been too much.
L121[03:59:01] <Althego> https://www.youtube.com/watch?v=sIatD8w_jOc
L122[03:59:05] * Rokker museum
L123[03:59:24] <JVFoxy> hey.. the guys that ran the place actually flew a number of older planes... a TigerMoth, one of the helpers even owns a Staggerwing, still flying.
L124[04:00:36] <JVFoxy> couple of Harvards
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L126[04:02:59] <falalilal> year 6 of the space program... and then i realize the dessert launch platform is called 'dessert' and not 'desert'
L127[04:03:14] <Althego> hehe
L128[04:03:18] <Althego> i took me a few months too
L129[04:04:00] <falalilal> sometimes i wonder why bothered to learn how to read at all
L130[04:05:47] <JVFoxy> desert... hot.. desert, sometimes cold... for someone who doesn't know english too well, I can see how that would be so much trouble to learn
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L175[07:29:06] <kubi> Fluburtur: https://index.hu/kulfold/2018/11/17/cigarettat_csempeszo_dront_fogtak_az_ukranok_a_magyar_hatarnal/
L176[07:29:22] <kubi> ukrania-hungary smuggler drone :)
L177[07:29:51] <Fluburtur> nice
L178[07:31:05] <Fluburtur> I can show them how to do it properly
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L194[10:03:36] <lordcirth> MM question: @entryCost = cost * 2 doesn't seem to work. What's the syntax?
L195[10:03:59] <lordcirth> I guess I could copy and then *= ?
L196[10:05:47] * darsie tries to collide two ships, one in prograde and one in retrograde orbit.
L197[10:06:02] <Althego> hehe
L198[10:06:10] <Althego> almost impossible
L199[10:06:16] <Althego> because of the physics step
L200[10:06:28] <lordcirth> You can retune the step time
L201[10:06:40] <lordcirth> Or even get better time warp and do 0.25x physics warp
L202[10:06:51] <Althego> basically that is the only way to do it
L203[10:06:58] <darsie> Is that stock?
L204[10:07:13] <Althego> no
L205[10:07:19] <lordcirth> the first one is
L206[10:07:22] <Althego> scott did something like this
L207[10:07:27] <Althego> slow motion station collision
L208[10:18:26] <Fluburtur> alright I need some inputs on stuff
L209[10:18:41] <Fluburtur> in parallel to my planes I will be trying to build and sell some antenna trackers
L210[10:19:52] <Fluburtur> they should be cheaper and sell more easily so should I focus more on that
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L213[10:25:54] <Fluburtur> also, to make a ring gear I can just make the negative of a regular gear and they will mesh?
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L220[10:57:54] <lordcirth> What's wrong with this MM syntax: @entryCost = #$cost$ * 2 ?
L221[10:58:11] <lordcirth> Is '*' not multiply?
L222[11:01:04] <lordcirth> Well, @entryCost = #$cost$ \n @entryCost *= 2 works
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L248[13:05:31] <Althego> slow day
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L250[13:55:25] <Eddi|zuHause> so, i provoked this fallen empire, and i can take on one of their fleets with all my fleets combined, but i have no idea how to separate theirs...
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L258[15:13:46] <Fluburtur> https://cdn.discordapp.com/attachments/186186471202357249/513461700960321556/DSC_0214.JPG
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L262[15:29:05] <Mat2ch> Fluburtur: watcha building?
L263[15:29:17] <Fluburtur> that's the video system for my glider
L264[15:29:30] <Fluburtur> HD and fpv video+tx, all in that
L265[15:30:32] <Mat2ch> sending even in HD?
L266[15:31:24] <Fluburtur> nah, the fpv signal is ugly as always but it records hd
L267[15:31:29] <Fluburtur> this way it needs only one camera
L268[15:32:30] <Mat2ch> what plane are you working on right now?
L269[15:32:51] <Fluburtur> this one https://www.banggood.com/Volantex-ASW28-ASW-28-V2-2540mm-Wingspan-EPO-RC-Sailplane-Glider-PNP-p-1072803.html?rmmds=myorder&cur_warehouse=USA
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L271[15:34:20] <darsie> <lordcirth> You can retune the step time <-- Max Physics Delta-Time per frame? It's 0.04, I can put it to 0.03.
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L274[15:37:56] <Fluburtur> however I don't know how deep the glider will be so I can't design the mount yet
L275[15:47:03] <Mat2ch> oh nice, a glider for once. :D
L276[15:49:42] <Fluburtur> yeah for long flight time and long range hopefuly
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L278[15:58:07] <darsie> My argument of periapsis drifts :(.
L279[15:58:39] <darsie> I had Ap/Pe with my target aligned, but it drifted apart. Altitudes are unchanged.
L280[15:59:05] <UmbralRaptop> Principa?
L281[16:00:00] <darsie> no
L282[16:00:06] <darsie> Ahh, no, altitudes changed, too.
L283[16:00:53] <darsie> KER, EER, dated quicksaves.
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L314[18:20:22] <Scolar_Visari> Sons and daughters of Kerbin: It's not called retreating, it's running away from danger as fast as you can!
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L317[18:23:11] <Scolar_Visari> Reusable Falcon 9 upper stage development abandoned (again?) https://spacenews.com/musk-hints-at-further-changes-in-bfr-design/
L318[18:28:37] * Scolar_Visari ponders if SpaceX engineers took the consideration very seriously given the bite a reusable upper stage would've taken out of payload capacity.
L319[18:30:46] <Scolar_Visari> Now this is pod racing! https://store.steampowered.com/app/808910/STAR_WARS_Episode_I_Racer/
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L321[18:35:20] <UmbralRaptop> pod racing, but it's which dolphin can eat the most tuna
L322[18:36:42] <JVFoxy> wish I had money, some space stuff I'd like to do too
L323[18:37:04] <Scolar_Visari> UmbralRaptop: Bonus points if you just stay home and train humans to give you fish.
L324[18:37:33] <Scolar_Visari> JVFoxy: Space Engine is space stuff for free.
L325[18:43:07] <JVFoxy> Scolar_visari I was thinking more developmental stuff, maybe launch to test it actually works.
L326[18:44:53] <Scolar_Visari> JVFoxy: But Space Engine IS in development!
L327[18:46:36] <UmbralRaptop> JVFoxy: design controls in kRPC?
L328[18:47:50] <JVFoxy> space engine more eye candy... knowledge database. I was thinking more systems to help explore space to expand on it that knowledge.
L329[18:48:45] <JVFoxy> the other day, on the news, Canadians don't want to see just Americans landing on the moon, rather a mixed nationality project
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L331[18:53:04] <Scolar_Visari> JVFoxy: Er, I think the big story was general skepticism over a Lunar gateway.
L332[18:53:41] <Scolar_Visari> There are budgetary, leadership and R&D deadline concerns surrounding the plans, which were admittedly never that concrete to begin with.
L333[18:54:16] <Scolar_Visari> https://spacenews.com/canada-not-sold-on-u-s-led-lunar-gateway-despite-nasa-boss-direct-pitch/
L334[18:56:29] * Scolar_Visari notes that NASA strategic goals tend to change every four or eight years.
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L336[18:57:48] <JVFoxy> Interesting..Victoria.. not far from me...
L337[18:58:07] <JVFoxy> I'd actually like to see us Canadians get more involved.. not just build robotics and imagery
L338[19:00:07] <JVFoxy> Growing up.. was big on space. Wanted to go up there. The whole nationality wasn't even a thing for me back then. Yet, parents insisted it was an 'American only thing'...
L339[19:00:55] <UmbralRaptop> gah
L340[19:01:23] * UmbralRaptop is aware of a number of Canadians working on exoplanets, though
L341[19:02:08] <UmbralRaptop> Scolar_Visari: just as long as there's not another admin/decadal report mismatch like almost killed WFIRST.
L342[19:02:47] <JVFoxy> well.. childhood for me was like early 80s...
L343[19:03:05] <JVFoxy> ... '80s... um ya ways..
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L347[19:21:29] <Scolar_Visari> JVFoxy: Space is expensive, however, there is a lower equilibrium region between the quantity of space stuff supply curve and the quantity of space stuff demand curve.
L348[19:22:04] <Scolar_Visari> Whether or not the starting point of the former curve will lower appreciably in the near future remains to be seen.
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L350[19:23:48] <Scolar_Visari> UmbralRaptop: I think the biggest potential threat to large NASA projects in the near future is bald or thinly guised anti-intellectualism.
L351[19:25:31] <UmbralRaptop> The earth/climate/weather ones, definitely. Other ones more political details or giving the appearance of cutting costs.
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L353[19:28:36] <Scolar_Visari> UmbralRaptop: There was a recent attack ad which specifically disparaged the Europa Clipper.
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L355[19:29:04] <Scolar_Visari> Not for the lander requirement, mind you, but because of it involving astrobiology
L356[19:31:16] <UmbralRaptop> uh
L357[19:31:45] <UmbralRaptop> o_O
L358[19:33:01] <UmbralRaptop> I mean, right now I'm biased towards ice giant orbiters (and a Venus return because it can teach us about exoplanets), but o_O
L359[19:34:33] <Scolar_Visari> Go Jovian or go home!
L360[19:34:47] <Scolar_Visari> All Neptune has is a moon that orbits backwards!
L361[19:35:31] <Scolar_Visari> Jupiter has theme parks orbiting it, like Lava World, Ocean World, Ice World and Plate Tectonics World!
L362[19:36:13] <UmbralRaptop> hah
L363[19:36:14] <Eddi|zuHause> we haven't even dared to do a mars return, why would anyone consider a venus return?
L364[19:36:47] <Scolar_Visari> Eddi: I suppose you could return Venusian atmospheric samples
L365[19:36:58] <UmbralRaptop> … return? We have a lander arriving at Mars in just over a week.
L366[19:37:14] <Scolar_Visari> UmbralRaptop: I think Eddi thoguht you meant sample return.
L367[19:37:26] <UmbralRaptop> Plus a current rover, and at least 3 orbiters
L368[19:37:27] * Scolar_Visari sighs as the hopes for a new Venera mission fade.
L369[19:37:57] <UmbralRaptop> Eddi|zuHause: the last US mission to Venus was Magellan in, uh, 1992?
L370[19:38:14] <Eddi|zuHause> ah yes, i thought you meant "return from venus", not "return to venus"
L371[19:38:25] <Scolar_Visari> Eddi: That would be a goldmine of geological data, however.
L372[19:38:38] * Scolar_Visari ponders what part of Venus one would best stab to get old rocks.
L373[19:39:04] <Eddi|zuHause> isn't venus surface weirdly uniform?
L374[19:39:12] <UmbralRaptop> A Venus sample return would give way more bang for the kg returned than a Mars one. Though I don't know for the $.
L375[19:39:56] <UmbralRaptop> Eddi|zuHause: maybe, but there is some ambiguity. We could do with better evidence for/against the resurfacing event
L376[19:39:58] <Scolar_Visari> Eddi: No more than Earth, in a way, due to geological resurfacing. Like the Earth, however, there should be holdouts of ancient rocks.
L377[19:41:01] <Scolar_Visari> There are also interesting volcanological features, though how active they are is something that requires further investigation.
L378[19:41:24] <UmbralRaptop> (granted, Eddi|zuHause might be paying more attention to ESA, which did have a Venus orbiter more recently)
L379[19:42:16] <Scolar_Visari> Don't forget Akatsuki!
L380[19:43:22] <UmbralRaptop> Yeah
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L382[19:46:05] <Scolar_Visari> Also, why, "ice giant orbiter" *or*, "icy moon orbiter". Is it too much to ask for both?
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L384[19:47:48] <UmbralRaptop> Decadal deathmatch^W report
L385[19:48:58] * Scolar_Visari mutters something about reforming the committee responsible for approving NASA's budget.
L386[19:50:43] * un214 still wants a working warp drive
L387[19:51:14] <Scolar_Visari> I'm not sure that one is physically possible.
L388[19:51:31] <Eddi|zuHause> thre are some theories about that
L389[19:51:45] <un214> well dark energy has a negative sign, and something with negative energy is required
L390[19:51:56] <un214> basically, if you can make the negative energy source the rest is doable
L391[19:52:35] <Eddi|zuHause> it's a lot of "well, mathematically that should work, no idea how to get there physically, though"
L392[19:54:14] <Scolar_Visari> un214: I don't think any cosmologist or physicist would actually describe dark energy as something that could be used in the manner you're thinking.
L393[19:54:30] <Eddi|zuHause> well, we barely managed to make a handful of atoms of antimatter. nobody has even a clue how to approach exotic matter
L394[19:54:39] <Scolar_Visari> Particularly if DE's a cosmological constant . . .
L395[19:55:49] <UmbralRaptop> The negative sign is in pressure, but as best I'm aware, works out to positive energy density.
L396[19:55:59] <Scolar_Visari> Eddi: There are also theoretical issues that haven't really been resolved, such as, "will warping space time build up an extinction level event's worth of charged particles?"
L397[20:02:56] <un214> Scolar_Visari then don't point your drive directly at the target
L398[20:03:26] <Scolar_Visari> Un214: I think it's less an issue at what you're point at but rather in every direction.
L399[20:03:45] <un214> ah; definitely doesn't do that
L400[20:03:47] <Scolar_Visari> I wouldn't make any bets on warp drives ever being a thing, or any FTL for that matter.
L401[20:04:19] <un214> well it's kind of a toss-up whether or not man will get one working before he runs out of time
L402[20:05:15] <Scolar_Visari> Like, "Earth turns into Kharak time" or, "Heat Death of the Universe" time?
L403[20:05:27] <Eddi|zuHause> i'm going out on a limb here and postulate that we won't see any practical use of a warp drive in our lifetime
L404[20:05:45] <un214> like God says "enough" time
L405[20:05:58] <Scolar_Visari> Eddi: I'll stay on my tree and say humanity won't see any practical use of space-time warping technology before maximum entropy
L406[20:06:25] * Scolar_Visari sets their egg timer just in case.
L407[20:06:47] <un214> on the other hand, if you have arbitrary space warping (which the warp drive isn't) than maximum entropy is not an issue
L408[20:07:44] <Scolar_Visari> In any event, you don't need FTL for semi-reasonable interstellar travel.
L409[20:07:54] <Eddi|zuHause> i'm assuming a warp drive still can't violate the 2nd law of thermodynamics
L410[20:08:08] <Scolar_Visari> While Mr. Torgue would not approve, LASER SAILS can do the trick without magictech!
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L412[20:10:19] <un214> correct the second law is still in play. There are metrics that defeat the first law but a warp drive will not suffice to set them up
L413[20:15:38] <UmbralRaptop> laser sails make me optimistic (!) about interstellar travel
L414[20:17:56] <Scolar_Visari> Now we just need several hundred teraWatt lasers emitters in Solar orbit . . .
L415[20:19:36] <UmbralRaptop> Sell it as a weapons system!
L416[20:19:58] <un214> lol man you'll never reach high relavisitic speeds that way
L417[20:20:51] <Scolar_Visari> un214: Yes you can!
L418[20:21:03] <Scolar_Visari> It's a matter of lowering your payload mass, increasing laser output.
L419[20:21:53] <Scolar_Visari> Or, better yet: Moar lazors.
L420[20:22:35] <Scolar_Visari> If you can push a manned spacecraft to a decent fraction of C, getting an unmanned one to ludicrous fractions of C would be trivial.
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L422[20:27:46] <un214> it's the heat dissipation
L423[20:29:12] <Scolar_Visari> That really shouldn't be an issue unless you're using a very focused beam at very close range.
L424[20:30:05] <Scolar_Visari> Even for a relativistic craft, you're still talking about months or years of acceleration by a wide beam against a sail many dozens or hundreds of square kilometers in area.
L425[20:30:18] <Scolar_Visari> Preferably thousands too, I guess.
L426[20:32:51] <Scolar_Visari> I'm not even sure the payload would even need to be very well shielded. In practice, it'd be a lot easier protecting it against laser light than it would be engineering a heat rejection system for a high thrust fusion rocket.
L427[20:35:47] <Scolar_Visari> The laser stations themselves would generate horrendous amounts of waste heat, but they're also largely stationary once finished and need not concern themselves with staying lightweight.
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L431[20:41:49] * Scolar_Visari admits, however, that stopping a relativistic laser sailcraft would likely require the use of a rocket unless you've the appropriate infrastructure on the receiving end.
L432[20:42:03] <Scolar_Visari> Still a lot easier than a rocket for both acceleration and braking!
L433[20:43:22] * Scolar_Visari ponder aerobraking . . . in a star's atmosphere.
L434[20:43:28] * UmbralRaptop recalls seeing some papers on sail designs getting into Sirius orbit faster than alpha cen
L435[20:46:01] <Scolar_Visari> The ablation of your spacecraft's will produce thrust!
L436[20:47:03] <UmbralRaptop> Kind of low Isp (in this case o_O)
L437[20:47:57] <lordcirth> Scolar_Visari, In the book Accelerando, they cut loose half the sail to act as a mirror to reverse the laser that accelerated them. However, that requires insanely good collimation, among other things.
L438[20:48:00] <Scolar_Visari> A white dwarf mission would be kind of interesting. Though, admittedly, not as cool as a neutron star or black hole rendezvous.
L439[20:48:28] <Scolar_Visari> lordcirth: There have been papers on the subject of using moar laser sails for reversing thrust on the receving end for a few decades now.
L440[20:48:55] <Scolar_Visari> I'd think that'd be too far out for longer distance missions.
L441[20:49:43] <Scolar_Visari> Forward, Robert. "Beamed Power Propulsion to the Stars" AAAS Symposium on Interstellar Communication and Travel 1986 http://www.transorbital.net/Library/D001_AxA.html
L442[20:52:23] <lordcirth> The randomly missing spaces are annoying
L443[20:52:27] <lordcirth> Cool paper, though!
L444[20:53:24] * Scolar_Visari notes the article discusses maximum speeds of 30% the speed of light, with ships completing trips at distances of ~11 light-years within a very reasonable 40 years
L445[20:55:07] <Scolar_Visari> Yes, they'd require tens of thousands of teraWatts of laser output, but there's nothing physically impossible aboot that!
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L448[21:25:16] * Scolar_Visari goes off to design a lightsail spacecraft using rays of photons reflected by shaven, well polished human heads.
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L466[23:40:54] <DAL59> hello
L467[23:40:55] <Mod9000> Hello, DAL59
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