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12:14 AM
good question now on cryo fuels and storage time
 
@TildalWave is terribad
 
the answer will have to explain thermal dynamics of near vacuum conditions
@NickT no, it's a good one, welcome aboard ;)
 
what's at vacuum?
would you just have a sunshade to reduce external heating then let it cool passively?
 
well there is no direct heat dissipation by thermal equilibrium heat exchange, since you're in no medium like in the atmosphere
 
what's thermal equilbrium in earth vicinity?
I know in deep, deep, deeeeep space it's CMB temps, but the sun tips that scale
 
12:18 AM
the only dissipation is by radiation, so keep that down from external sources, and you should be fine... ISS has external O2 and N2 gas tanks installed on the Joint Airlock, for example
 
are they cryogenic tanks?
 
based on their in-tank pressure here, yes: spacestationlive.nasa.gov/displays/ethosDisplay1.html
that's the "Quest Airlock" values
 
1000-2000 psi sounds reasonable...but maybe low...for gas tanks
 
some other things to consider would also be the cryogenic upper stages, there are several
 
yeah, but staging rockets is fairly brisk in the grand scheme of things
 
12:24 AM
@NickT dunno, I would have to check really, but let's hope someone else drops you an answer sooner than I'll have the time to
@NickT I know... thus the need to look into it more, at least for me. Maybe someone else could answer it off the top of their head tho :?
 
one hopes :D
I do like my KSP propellants that never boil away, lol
 
I can think of a few regulars here that should be able to give you a good answer, then it just depends on when they find the time to. If you won't get an answer, I'll add a bounty to it or maybe find you an answer myself ;)
@NickT I really need to install me that game, I even googled for "KSP propellant" now LOL
hmmm.... what would "cold nitrogen gas" mean, I remember that ESA's Swarm sats will use it for ACS, so now the question is, if "cold" means "cryogenic" or just "not thermo-chemical expansion"
 
 
4 hours later…
4:21 AM
I likely won't be here for the today's Dnepr launch, and I dunno if there's gonna be any streams available, but do check the Russian TSenki or the usual suspects (NASA TV, NASA Public, SpaceflightNow,...), about 15-20 minutes before launch window (07:10 GMT / 2:10 a.m. EST) for any sign of it ;)
... or search USTREAM and LIVESTREAM for any other live feeds
here's an official Kosmotras Dnepr site: kosmotras.ru/en/news/137
 
 
3 hours later…
7:15 AM
posted on November 21, 2013 by Chris Bergin

Kosmotras launched a Dnepr rocket from Dombarovsky on Thursday, carrying the United Arab Emirates’ DubaiSat-2, thirty one other satellites – including Peru’s first satellite – and one attached... Related posts:Russian Dnepr rocket launches with Arirang-5South Korea’s Arirang-5 satellite was launched on Thursday atop a... Dnepr launches with Ukraine’s Sich-2

 
7:48 AM
@TildalWave!
@Undo
 
 
2 hours later…
9:48 AM
posted on November 21, 2013 by Becky Smethurst

Galactic bars have long been associated with many processes affecting galactic evolution. This paper studies how bars affect the star formation rate, mass and structure of a large sample of morphologically classified galaxies.

 
 
4 hours later…
1:18 PM
@UV-D Hey there! You had some time off, enjoying yourself (and maybe others?)? :D
 
2:14 PM
She wrote the most important astrophysics PhD of the 20th century yet hardly anyone knows her name... http://t.co/zDFs17MvJX
Hmm, this room works with httpS:// postings for twitter. Some do not.
Or they fixed it. Super User's room now also works with https. Two days again (and the weeks before that) it did not.
 
2:27 PM
@Hennes It always worked for me, at least since I started posting tweets in chats, maybe started in the last quarter? :O
 
I still needed to 'correct' a tweet from https to http somewhere in the beginning of the week. (In Super User's rootaccess room).
Which accepted an https tweet when I tested it a few minutes ago.
But non a few days ago
 
@Hennes Could be some problem with your HTTPS Everywhere, it's pretty buggy in Chrome
 
Firefox over here (at least for SE sites and generic web browsing.).
 
I often force-restart the plugin, about once every two days of thereabouts
 
With quite a lot of add-ons (flashblock, add-block, ghostery, Request policy, ...). But that should not affect the room from expanding a line.
 
2:31 PM
@Hennes Ah well dunno about FF, but I imagine if it's buggy in Chrome, it would likely have some problems in FF too. I don't use it as often tho
 
I shut down (really shut down, not hibernate) my desktop each day. So I get a fresh room/client when I boot in the morning
But.. it works (for me) (now). So I am not complaining. I am just surprised.
 
Cecilia Helena Payne-Gaposchkin (May 10, 1900 – December 7, 1979) was a British-American astronomer and astrophysicist who, in 1925, proposed in her Ph.D. thesis an explanation for the composition of stars in terms of the relative abundances of hydrogen and helium. Early life Cecilia Helena Payne was one of three children born in Wendover, England, UK to Emma Leonora Helena (née Pertz) and Edward John Payne, a London barrister, historian and accomplished musician. Her mother came of a Prussian family and had two distinguished uncles, historian Georg Heinrich Pertz and the Swedenbor...
Very interesting stuff.
 
 
1 hour later…
4:06 PM
@PearsonArtPhoto heh, I like your comment
@TildalWave: Yeah, but if one can entertain the fantasy that one can go almost light speed, let's entertain the fantasy that somehow we can deal with specks of dust. — PearsonArtPhoto 12 mins ago
Now... of course, the question is, where does our galaxy end? :)))
are we there yet?
tries: IIII IIII IIII IIII II
 
burp
 
Everyone is leaking D:
 
eyes @JohnB auspiciously
What will the Martians Mars One Terrans breathe?
pokes everybody else with a stick
 
4:28 PM
@TildalWave I thought you might;-)
 
has anyone been here for the launch, has there been any live streams of it?
@PearsonArtPhoto And BTW we have a new record ... 32 sats on a single launcher
 
Yeah, I should probably go update that one.
 
Hm. Given that our galaxy is moving at 'c' compared to another Galaxy - even approaching 'c' will probably not let us make it to another Galaxy
 
4:42 PM
@Everyone it's not moving at c compared to any galaxies in the local cluster
 
@TildalWave Not yet (+: But aren't they receding too?
I think I just put my feet in my mouth ...
 
@Everyone You mean due to cosmic inflation? Well yes, but local clusters are also gravitationally bound
plus, you're talking in cosmological terms then, meaning ... none of us will be here to care about it :P
 
Doesn't mean we can't talk about it (+:
Discussing c is sort-of like discussing Death, imo.
 
4:57 PM
Is a SCUBA rebreather different from a PLSS rebreather?
 
to my understanding, not that much
gas mixture maybe, to avoid nitrogen narcosis with scuba rebreathers?
 
Phew. Then the question on mixture is in order?
@Tilda What is the projected mortality displacement in the Mars One program?
I think I said something owrng )+: It's gone all quiet in here
 
5:22 PM
I have no idea... probably 100% like here on Earth? :P
 
q+: come on. you know what I meant
 
I need to answer one question of @PearsonArtPhoto so he'll have to upvote me, he's catching me fast in rep for the week :) How's my plan? LOL
 
the martian terrans will be exposed to high rad for several months in transit from Earth... and perhaps later too
 
@Everyone I did, but you know I had to make fun of it, right? :)
 
Sounds a good plan.
 
5:25 PM
@Everyone that's the question I had in mind actually
I have some numbers
actually, I have all of them, from 0 to 9
 
hmpf. You do realize that might have cost you my upvote on the answer to @PEars question
lol
 
damn, my plans are foiled!
 
j/k (+: Go ahead and post the reply; i'll upvote
Btw, is there a question on the mortality displacement in the M1 program yet? If not, I'll get started
 
@Everyone I don't think there is, go ahead and post it.
 
Cool
 
5:31 PM
try to avoid too many hyphens :P
you don't need some, like e.g. round-trip :))
 
Can't be too many hyphens in "What is the projected death-rate dis-placement in the Mars-One space-colonization programme?" q+:
 
Guess that just means I need to answer one or two of my own questions;-)
 
5:46 PM
You could flag one of his instead (+;
 
Wow, this is going to be my first holiday season on SE.
I'm kinda excited for the hats.
 
Tildal is already cheating
 
@JohnB Why, what's he doing?
prepares hammer
 
He has a hat in his avatar already!
 
grabs tildal's hat, throws on ground, and stomps on it
 
5:53 PM
oh wait
so do I D:
*hides*
 
@JohnB I don't yet have mustaches and a pipe tho... it's not gonna be hats only you know? :P
well at least on my gravatar ... I'm 100% movember ready otherwise ;)
 
My new gravatar:
Ooops, didn't work :(
 
l o l
I thought I was playing spot the difference for a second
 
So what you're saying is it's time I changed my gravy?
 
6:08 PM
^ I'm getting a head start :D
 
banned!
 
ducks
 
(fyi you may already know this but you can prepend a ! to any url that should be an image and chat will parse it as an image)
um oops
 
@JohnB Oh, that's convenient!
 
fries the ducks
 
6:09 PM
REVERT
this is why I don't touch buttons
 
lol
 
so, try !https://s.gravatar.com/avatar/9278dc00e1a8755dc2de02b6a908a15a?s=80
 
 
yay
 
Wow, works!
> Suppose that in 12 minutes your supervisor can complete a task that takes you 15 minutes to complete. Determine the amount of time required to complete the task if you work together.
Well, it depends - how well do we work together?
:P
 
6:20 PM
No q+: It depends upon how effectively you coordinate what you are most efficient at
 
I could spend hours on that problem alone.
 
perfect
@Undo that's a terrible question, who's asking?
 
@JohnB El Math Book.
 
just write Closed: Not a real question
 
6:29 PM
@Undo Working alone, the supervisor takes 12m. Working against you (aka 'together' in supervisor-lingo) the supervisor will expect you to do everything, and explain what you do in detail. Call it a tentative 15 hours
(+;
 
what if it's a supervisor of a bakery and it's making cookies that require 10 minutes to bake?
 
@JohnB Algebra II closed by Undo as off-topic: questions asking for numbers must demonstrate a minimal understanding of the problem being solved
evil laugh
 
@Undo 12 minutes ... you let your supervisor do it, while you go for an early lunch :P
 
Those cookies are lunch q+:
 
why aren't you turning in your Algebra?
I put it on hold. You have seven days before it gets closed.
Wow, I'm not use to Stack Overflow anymore - everything's so much more fast-paced than it is here on SX.
 
6:34 PM
@Undo hah, fgitw ftw!
 
@ManishEarth translation?
ah fastest gun ...
 
Fastest Gun In The West For The Win
 
... in the west
 
Also, people seem to lose all ability to spell or make understandable sentences as soon as they step in to SO.
It's sooo weird not having mod tools / being able to see deleted stuff on SO.
 
@Undo it's for your own protection :P
 
6:39 PM
@TildalWave Probably.
Although I would have to say that there are some... interesting things get deleted on mSO.
 
mSO is different, you already have users there that can click more than 2 links deep
 
@TildalWave You would think...
 
so is "patched conic approximation" the technical phrase for what KSP does?
 
7:14 PM
Awake anybody?
sulks and goes to bed
'nini
 
8:04 PM
Barely, and about to get some sleep
 
 
3 hours later…
11:07 PM
@NickT Do you have Lagrange points in KSP? Patched two-body trajectories wouldn't include them
 
There aren't; orbits in the game are governed exclusively by a single celestial body (at a time); whoever's "sphere of influence" you are in
 
Trying out a Dvorak keyboard - I can't really FGITW anymore :(
 
@NickT that would be patched conic approximation then, yup
@Undo hehe I tried that too and I couldn't type any more ... funny, how used we get to qwerty even tho it was actually invented to slow down typing LOL
 
@Ycnean<ak. C tbr,w pcidyZ
"I'd like to report a bug in your keyboard - it produces unintelligible text."
 
well... to prevent keys jamming on typewriters at least, with letters that are unlikely to follow one next to it
something like that
 
11:23 PM
Shog has some opinions on Dvorak, actually.
 
@Undo PEBKAC :P
 
in Tavern on the Meta on Meta Stack Overflow Chat, 1 hour ago, by Shog9
Dvorak: write more crap faster with less strain
in Tavern on the Meta on Meta Stack Overflow Chat, 1 hour ago, by Shog9
I think if someone snuck in and rearranged all of my key-caps randomly and then remapped the keys accordingly I could manage... but, why?
 
hehehe found this:
 
in Tavern on the Meta on Meta Stack Overflow Chat, 16 mins ago, by Undo
Solution to the FGITW problem: Make everyone switch to Dvorak.
 
@Undo put server on analog modem?
 
11:29 PM
That would work too.
 
or... move it to Mars :)
 
Actually, make everyone write their answers on a typewriter and mail them in - that would work.
 
just add 20 minutes of network lag ... i.e. with each keypress a random youtube cat video opens
or ... make the site 18+
 
Sounds like an April Fool's joke.
 
oh, I'm full of great ideas ;)
 
11:32 PM
This is pretty obviously homework:
-1
Q: Trying to figure out why my program not working or what am I doing wrong

user3018851// // Wheeled.h // Wheels speed test program // // Created by Hector M. Santiago on 11/21/13. // Copyright (c) 2013 Hector M. Santiago. All rights reserved. // // Homework 3 Complete and submit to your professor for grading: // Define and implement a class named Wheeled that has properties...

 
@Undo well yes, and he's obviously failing the class too
wrong college, he should have donkey riding major
 
Oh, I have a crazy new goal.
Get more helpful flags on SO than Andrew Barber within six months.
I hope he doesn't start declining them to thwart my plans :(
 

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