<Agathorn>
!tell NathanKell I think I told you before about the new Battletech game that was in Kickstarer. Well multiplayer beta comes out very soon and the developers made a gameplay video, thought you might like to see it. It looks great. https://www.youtube.com/watch?v=rt6FatHHnzI
<Qboid>
Agathorn: I'll redirect this as soon as they are around.
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<stratochief|away>
Pap: acc: a real tank will boil whatever is the cooler cryogenic. in an LH2/LO2 tank, that will be the LH2. for a Kerolox stage, the LOX will be the cryogenic that boils off.
<Pap>
I assumed Cryo always boiled off, but didn't know how that worked, thanks stratochief|away
<stratochief|away>
Starwaster being the wiser one, he may explain how it actually occurs more realistically. is it simply heat transfer through the inter-tank region that leads to only boiloff occuring in the one that boils first, or is that an inaccurate thing? should the LO2 in an hydrolox stage also be lost, just at a much slower rate?
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<Starwaster>
It depends though on if enough of the LH2 is boiling off. It might or might not shed enough heat to prevent the LOX from boiling.
<stratosleep>
Starwaster: thanks for the clarification, I figured that either situation could happen. It would depend on how closely thermally coupled the two tanks are to each other, vs coupling to the external stage temperature.
<Starwaster>
In the Saturn V stages, they also used a common bulkhead for the second and third stages which probably helped reduce LOX boiloff. (in fact, the bulkhead has to be insulated to reduce heat leak from the LOX from leaking into the LH2)
<Starwaster>
but we don't simulate a common bulkhead
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<Starwaster>
I suppose I could but I'd first need code to determine if there even IS a common bulkhead
<stratosleep>
yeah, that would require a new tank type or tank feature or something. unless you just assume that any RF tank with 2 or more different things is using common bulkhead
<stratosleep>
and you'd need to estimate/calculate how much more or less using common bulkhead or not would take in terms of mass, part cost. complicated.
<stratosleep>
did the shuttle external tank also use common bulkhead?
<stratosleep>
regardless. the S-II is the rocket stage I want to be when I grow up. you can clearly tell that my sleep meds are kicking in
<Starwaster>
No, no new tank type. Just need to look at how much volume is actually utilized. We coiud probably even assume most taks have commons bulksheads
<Starwaster>
max utilization by default is 85% right? IRL, it would actually be less, per tank if they were completely seprearted from each other
<Starwaster>
sorry, this damn keyboard is hard to type on when it's completely under the desk. Had to pull it out so my fingers have more room
<Starwaster>
might have that backwards... trying to work the math out in my head here
<Starwaster>
no going to have to spreadsheet this.
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<schnobs>
o/
<Qboid>
schnobs: Pap left a message for you in #RO [13.05.2017 20:10:57]: "that J-2 engine you were talking about it representative of an engine that was the earliest J-2 on the Saturn IB early unmanned tests. It wasn't uprated until after the first few flights, the values on it are correct"
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<schnobs>
would anyone happen to know where those figure come from, and why it's not simply 5.6kg/m^2?
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<schnobs>
anyhoo.
<schnobs>
wondering if the upgrade mechanism could be applied to solar panels. So you can unlock all shapes and sizes all at once, and have them become better panels as you unlock better tech.
<schnobs>
Totally clueless as to how to integrate it into the tangle we have, however.
<schnobs>
Upgrades itself are simple, but if even the "original" value is something like
<schnobs>
@mass *= 2
<schnobs>
I wonder what happens.
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<soundnfury>
huh, that's an interesting syzygy.
<Qboid>
soundnfury: dnsmcbr left a message for you in #SpaceXFun [13.05.2017 22:39:25]: "congrats on ur eurovision win dude"
<soundnfury>
So my probe's just arriving at Mars, 13/3/1961, and there's a quadruple conjunction of Mercury, Venus, Jupiter and Saturn
<acc>
stratosleep, Starwaster: alright, got it. thanks for the info
<HypergolicSkunk>
god I love Procedural Avionics.. makes construction so much more hassle-free <3
<soundnfury>
Hmm, something wrong with Altair and TF
<soundnfury>
it seems to have started being active (collecting du, failing) as soon as I launched, despite it being waaay up in upper stages and not firing yet
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<soundnfury>
and now it exploded :( despite still not being staged
<acc>
hm, weird
<acc>
I've only used the seps, tiny tim and the sergeant one yet
<acc>
they work as expected
<soundnfury>
looking at my ConfigCache, it appears it has two sets of TestFlight modules
<soundnfury>
possibly one set is as a tank, the other as an engine
<acc>
part name RO-X-248?
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<soundnfury>
yup
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<soundnfury>
ahh, I may have cocked up my install and gotten Stock TF configs mixed in
<acc>
yeah
<acc>
I just tested the altair. works perfect
<acc>
must be a faulty config on your side
<soundnfury>
yup
<soundnfury>
comes from trying to download mods with CKAN into another install and then copy them across
<acc>
I'll sent you the bill for the sim :P
<acc>
:D
<soundnfury>
("well durr, RO doesn't exist so you must want stock configs")
<acc>
yep
<soundnfury>
I managed to catch it when it did that for RF, and RealPlume, and possibly something else. But missed TF.
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<acc>
heh. happens
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<Pap>
o/ acc
<acc>
heya Pap :)
<Pap>
Still progressing towards the Moon?
<acc>
nah, did first docking yesterday and for now 3 geosync sats
<acc>
need to wait for a engine technode to get the apollo LV done
<xShadowx>
how much pressure (diving underwater) should a kerbal withstand before being crushed?
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<Sigma88>
any brazilians here?
<HypergolicSkunk>
.nextlaunch
<HypergolicSkunk>
oops
<Sigma88>
0/
<Olympic1>
0/
<acc>
perfect dV margin. how I love it :]
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<jclishman>
Does RCS need it's fuel tank to be high pressure?
<soundnfury>
jclishman: I believe so.
<jclishman>
aight, thanks
<Agathorn>
a human will run into plenty of other problems underwater long before befoing crushed. Air of course. And if you did have air (SCUBA) it needs to be the right mixture for extreme depths or else the air itself will become toxic. But with proper gear AND TRAINING a person can dive even several hundred meters. Being crushed really isn't the issue. As for pressure, it increased by 1atm every 10 meters
<jclishman>
also, where the hell is Nitrogen in the fuel list
<jclishman>
I cant find it
<jclishman>
nvm
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<Agathorn>
of course you doo have issues with pressure when coming back up so if you want to kill a kerbal from pressure, just do it when they come back up too fast and the nitrogen in their blood kills them
* soundnfury
bends Agathorn
<xShadowx>
Agathorn: already have ising too quick ;3 heh kinda came with the whole......somebody hit wrong button and airlock opened