Go Back   AnandTech Forums > Social > Off Topic

Forums
· Hardware and Technology
· CPUs and Overclocking
· Motherboards
· Video Cards and Graphics
· Memory and Storage
· Power Supplies
· Cases & Cooling
· SFF, Notebooks, Pre-Built/Barebones PCs
· Networking
· Peripherals
· General Hardware
· Highly Technical
· Computer Help
· Home Theater PCs
· Consumer Electronics
· Digital and Video Cameras
· Mobile Devices & Gadgets
· Audio/Video & Home Theater
· Software
· Software for Windows
· All Things Apple
· *nix Software
· Operating Systems
· Programming
· PC Gaming
· Console Gaming
· Distributed Computing
· Security
· Social
· Off Topic
· Politics and News
· Discussion Club
· Love and Relationships
· The Garage
· Health and Fitness
· Merchandise and Shopping
· For Sale/Trade
· Hot Deals
· Free Stuff
· Contests and Sweepstakes
· Black Friday 2013
· Forum Issues
· Technical Forum Issues
· Personal Forum Issues
· Suggestion Box
· Moderator Resources
· Moderator Discussions
   

Reply
 
Thread Tools
Old 08-20-2009, 08:35 PM   #51
Kaido
Lifer
 
Join Date: Feb 2004
Posts: 27,492
Default Will a bullet fire in outer space?

So if you're on a treadmill and you fire a gun in outerspace, will the counter-reactive force sending you flying backwards?
__________________
Dave Likes Food
Kaido is online now   Reply With Quote
Old 08-20-2009, 08:38 PM   #52
91TTZ
Lifer
 
Join Date: Jan 2005
Posts: 14,380
Default Will a bullet fire in outer space?

Quote:
Originally posted by: apac
no oxygen = no kaboom
How did your post get all the way down here?
__________________
"Insert crafty signature here ©"
91TTZ is offline   Reply With Quote
Old 08-20-2009, 08:40 PM   #53
CallMeJoe
Diamond Member
 
CallMeJoe's Avatar
 
Join Date: Jul 2004
Location: Palmetto State
Posts: 6,936
Default Will a bullet fire in outer space?

Quote:
Originally posted by: spidey07
Quote:
Originally posted by: 91TTZ
Quote:
Originally posted by: spidey07
Regarding the slide on a handgun as to if it would cycle another round. I think highly unlikely, the energy that pushes the slide back would all go to pushing YOU back instead of the spring.
Incorrect. The same physics still apply.
You, in zero gravity, are no acting force other than your mass. So I guess it would all come down to one's mass and the springs force. You're right though, it's all a question of acceleration/mass. I misspoke when I said "all of the energy", it's between you and the spring.
dammit, don't make me think.
That leads me to believe a gas assist would have a higher chance as the spring is much weaker.
The recoil should initially transfer primarily to the slide, with sufficient energy to cycle the mechanism. As the slide (and barrel) compress the spring, an increasing portion of the recoil would transfer through the pistol frame to you and start your reactive backslide.
__________________
No one in this world has ever lost money by underestimating the intelligence of the great masses of the plain people.
Nor has anyone ever lost public office thereby.

H. L. Mencken
CallMeJoe is offline   Reply With Quote
Old 08-20-2009, 08:51 PM   #54
sandorski
No Lifer
 
sandorski's Avatar
 
Join Date: Oct 1999
Location: coquitlam, bc
Posts: 56,542
Default Will a bullet fire in outer space?

Quote:
Originally posted by: 91TTZ
Quote:
Originally posted by: apac
no oxygen = no kaboom
How did your post get all the way down here?
Time Warp
__________________

FX 8320@4ghz||Zalman LQ310||AsusM5A99X EVO R2
||XFX 5870 1gb||16gb Corsair Vengeance DDR3||Seasonic M12 II 500watts||Zalman Z9 Plus||Asus MS238H

Science inspires us towards a better tomorrow, Fundamentalism wants us to die.
sandorski is online now   Reply With Quote
Old 08-20-2009, 09:40 PM   #55
Gibsons
Lifer
 
Gibsons's Avatar
 
Join Date: Aug 2001
Posts: 11,512
Default Will a bullet fire in outer space?

Quote:
Originally posted by: DrPizza
Quote:
Originally posted by: spidey07
Quote:
Originally posted by: DrPizza


People actually thought that bullets need atmospheric oxygen??
What? Does it magically seep through the brass casing to get to the gunpowder after the primer has been struck? And seep quickly at that!
They never watched Mr. Wizzard and how much fun he had with gunpowder. I weep for our young'uns.
Mr. Wizard isn't the only thing teaching common sense, is it?
edit: wasn't (past tense)


Also, regarding freezing quickly in space. It's absolutely amazing that people don't realize how a Thermos works. Must be magic!
Okay, two guys were walking to work one morning. The first guy was from <your university>, the other guy was from <your rival>.

The guy from <your university> was carrying a thermos. The guy from <your rival> "What's that?"

He answers "It's a thermos, I've got my coffee in it, the thermos will keep it hot all day."

The nest day the same two are walking to work again and the guy from <your university> has his thermos again. The rival guy says "Havin' coffee again?"

He answers, "No today I've got fruit juice in it, the thermos will keep it nice and cold all day."

"So it'll keep things hot OR cold?" "Yep."

Next day they walk to work together again and the guy from <your rival> has a thermos. The guy from <your university> asks him what's in it.

He answers "One cup of chili and an ice cream sandwich."


try the veal.
__________________
Tigers are great
They're the toast of town
Life's always better
When a tiger's around!
Gibsons is offline   Reply With Quote
Old 08-20-2009, 09:42 PM   #56
FoBoT
Super Moderator
 
FoBoT's Avatar
 
Join Date: Apr 2001
Location: Holden MO
Posts: 63,088
Default Will a bullet fire in outer space?

Quote:
Originally posted by: sandorski
The big question is: Plane on a Treadmill in Space, does it take off?
i think you mean a rocketship on a treadmill
__________________
“Sometimes the questions are complicated and the answers are simple.”
― Dr. Seuss
FoBoT is offline   Reply With Quote
Old 08-20-2009, 09:44 PM   #57
LifesABeta
Senior Member
 
LifesABeta's Avatar
 
Join Date: Mar 2009
Location: California
Posts: 279
Default Will a bullet fire in outer space?

Space thugs are the next social threat to outer space society.
LifesABeta is offline   Reply With Quote
Old 08-20-2009, 10:13 PM   #58
TehMac
Diamond Member
 
TehMac's Avatar
 
Join Date: Aug 2006
Posts: 9,961
Default Will a bullet fire in outer space?

Quote:
Originally posted by: Skoorb
Quote:
Originally posted by: 91TTZ
Quote:
Originally posted by: Skoorb
Yes. The russians even had a high caliber gun on one of their spy satellites in the 70's (?). It was intended to be used by the guys on it to take out other satellites if the opportunity ever arose. It never did, but I think they may have done a test fire of it.
That seems really unlikely, considering that most satellites aren't even remotely close to one another. You'd have to steer over to the other satellite which isn't even possible if they're in different orbits.
Yeah it would be all but impossible, plus the speed it would be going by you, I don't know why they bothered.

link

Quote:
In 1974, the Soviet Union launched the Salyut 3 space station, code-named Almaz, which secretly carried a 23-mm Nudelmann aircraft cannon. According to Soviet cosmonauts, tests run on this very first space gun were a success?the cannon even destroyed a target satellite. Although Almaz tracked several American spacecraft, including Skylab, the Soviets never attacked any of them.
And so the question definitively answered.

That's pretty fucking awesome actually. Russians are gods when it comes to designing weapons.
TehMac is offline   Reply With Quote
Old 08-20-2009, 10:15 PM   #59
jlee
Lifer
 
jlee's Avatar
 
Join Date: Sep 2001
Location: AZ
Posts: 43,843
Default Will a bullet fire in outer space?

Quote:
Originally posted by: techs
Quote:
Originally posted by: Gibsons
Quote:
Originally posted by: apac
no oxygen = no kaboom
atmospheric oxygen isn't needed.
So you are saying there is an oxidizer in the gun powder? (and there would also have to be some in the fulminate of mercury, or whatever they are using nowadays as the primer)
Bullets are pretty tight in the casing. You don't need to poke a hole in it before you fire, do ya?
__________________
Heat Tacoma MR2 LX450
jlee is offline   Reply With Quote
Old 08-20-2009, 10:17 PM   #60
spidey07
No Lifer
 
spidey07's Avatar
 
Join Date: Aug 2000
Posts: 65,044
Default Will a bullet fire in outer space?

Quote:
Originally posted by: JLee
Quote:
Originally posted by: techs
Quote:
Originally posted by: Gibsons
Quote:
Originally posted by: apac
no oxygen = no kaboom
atmospheric oxygen isn't needed.
So you are saying there is an oxidizer in the gun powder? (and there would also have to be some in the fulminate of mercury, or whatever they are using nowadays as the primer)
Bullets are pretty tight in the casing. You don't need to poke a hole in it before you fire, do ya?
I'm gonna have to go back to Mr. Wizzard. Gun powder was invented...what? 1800 years ago?

And yet here we are. Gun powder seems to be some magic powder that doesn't work in space. I blame our education system.
__________________
___
(\__/)
(='.'=)
(")_(")
spidey07 is online now   Reply With Quote
Old 08-21-2009, 01:34 PM   #61
SammySnood
Member
 
Join Date: Aug 2008
Posts: 52
Default Will a bullet fire in outer space?

Quote:
Bullets are pretty tight in the casing. You don't need to poke a hole in it before you fire, do ya?
Is that why they call that thing a firing pin???

Edit: Uh, considering some of the replies in this thread, I thought I'd better add a or something.
SammySnood is offline   Reply With Quote
Old 08-21-2009, 02:06 PM   #62
AyashiKaibutsu
Diamond Member
 
AyashiKaibutsu's Avatar
 
Join Date: Jan 2004
Location: Maryland
Posts: 8,551
Default Will a bullet fire in outer space?

Quote:
Originally posted by: zerocool84
Quote:
Originally posted by: Fayd
Quote:
Originally posted by: zerocool84
The gun would freeze before they even shot it. It's -455*F/-270*C out there.
except there's nothing to transfer heat away from the gun, so it just radiates. radiating heat is a very slow process.
I'm no expert but wouldn't the sliding mechanism not function with a change of temp that quickly assuming it's made out of metal of course???
Jesus christ do people even read...
__________________
The large print giveths and the small print taketh away.
AyashiKaibutsu is offline   Reply With Quote
Old 08-21-2009, 02:16 PM   #63
Auryg
Platinum Member
 
Auryg's Avatar
 
Join Date: Dec 2003
Posts: 2,377
Default Will a bullet fire in outer space?

I think the real question is how fast would the barrel overheat? With basically no heat dissipation I imagine it wouldn't take very many shots.
__________________
The Sidehatch - Prizes for playing flash games - My Website
Auryg is offline   Reply With Quote
Old 11-10-2012, 07:14 PM   #64
physicsnerd
Junior Member
 
Join Date: Nov 2012
Posts: 1
Default Will bullets fire in space?

Contrary to popular belief (excluding the fact that you and the gun will freeze if not wearing appropriate clothing) guns will indeed fire in space. Fires can't burn in the oxygen-free vacuum of space, but guns can shoot. Modern ammunition contains its own oxidizer, a chemical that will trigger the explosion of gunpowder, and thus the firing of a bullet, wherever you are in the universe. No atmospheric oxygen required.

The only difference between pulling the trigger on Earth and in space is the shape of the resulting smoke trail. In space, it would be an expanding sphere of smoke from the tip of the barrel!
physicsnerd is offline   Reply With Quote
Old 11-10-2012, 07:24 PM   #65
Minerva
Platinum Member
 
Join Date: Nov 1999
Posts: 2,027
Default

Space is nearly a perfect vacuum, I don't see this mentioned anywhere in the thread.

Has anyone studied the effects of exceedingly low atmospheric pressure on shell casings and their reliability? Shotgun shells would "vent" quickly as the crimp is far from a perfect seal.
Minerva is offline   Reply With Quote
Old 11-10-2012, 07:26 PM   #66
oldsmoboat
Elite Member
 
oldsmoboat's Avatar
 
Join Date: Mar 2000
Location: Kaliforniastan
Posts: 45,686
Default

Quote:
Originally Posted by physicsnerd View Post
Contrary to popular belief (excluding the fact that you and the gun will freeze if not wearing appropriate clothing) guns will indeed fire in space. Fires can't burn in the oxygen-free vacuum of space, but guns can shoot. Modern ammunition contains its own oxidizer, a chemical that will trigger the explosion of gunpowder, and thus the firing of a bullet, wherever you are in the universe. No atmospheric oxygen required.

The only difference between pulling the trigger on Earth and in space is the shape of the resulting smoke trail. In space, it would be an expanding sphere of smoke from the tip of the barrel!
What have you done with Ruby?!
__________________
For A Friend
BetterCreditCard.Com
It's not the odds that guide me, it's the stakes
oldsmoboat is offline   Reply With Quote
Old 11-10-2012, 07:31 PM   #67
gorcorps
aka Brandon
 
gorcorps's Avatar
 
Join Date: Jul 2004
Location: South Bend
Posts: 24,741
Default

Quote:
Originally Posted by physicsnerd View Post
Contrary to popular belief (excluding the fact that you and the gun will freeze if not wearing appropriate clothing) guns will indeed fire in space. Fires can't burn in the oxygen-free vacuum of space, but guns can shoot. Modern ammunition contains its own oxidizer, a chemical that will trigger the explosion of gunpowder, and thus the firing of a bullet, wherever you are in the universe. No atmospheric oxygen required.

The only difference between pulling the trigger on Earth and in space is the shape of the resulting smoke trail. In space, it would be an expanding sphere of smoke from the tip of the barrel!
nerd
__________________
-So sayeth Brandon, knower of things
360: GORcorps|||PS3: gorcorps|||Steam: gorcorps
HEATWARE
gorcorps is online now   Reply With Quote
Old 11-10-2012, 07:39 PM   #68
WaTaGuMp
Lifer
 
WaTaGuMp's Avatar
 
Join Date: May 2001
Location: Orange County CA
Posts: 14,867
Default

Fucking thread necroer's.
__________________
3570k @ 4.6 1.25v /MSI Z77A-GD65/Hyper 212 EVO /8GB Corsair Vengence DDR3 1600/Asus GTX 770 SLI/Samsung 840 120gb /Hitachi 1TB /Cooler Master V700/Qnix QX2710 @ 96hz/Logitech Z5300/ Razer Deathadder/NZXT Phantom 630/Windows 7 Ultimate 64

RIP, John, my best friend Oct 17th 1966 - Nov 13th 2010
RIP, Victor, my dad, June 26th 1927 - April 13th 2011
WaTaGuMp is online now   Reply With Quote
Old 11-10-2012, 07:40 PM   #69
oldsmoboat
Elite Member
 
oldsmoboat's Avatar
 
Join Date: Mar 2000
Location: Kaliforniastan
Posts: 45,686
Default

Quote:
Originally Posted by WaTaGuMp View Post
Fucking thread necroer's.
Post count +1
__________________
For A Friend
BetterCreditCard.Com
It's not the odds that guide me, it's the stakes
oldsmoboat is offline   Reply With Quote
Old 11-10-2012, 07:43 PM   #70
WaTaGuMp
Lifer
 
WaTaGuMp's Avatar
 
Join Date: May 2001
Location: Orange County CA
Posts: 14,867
Default

Quote:
Originally Posted by oldsmoboat View Post
Post count +1
Do bullets fire in basements in space?
__________________
3570k @ 4.6 1.25v /MSI Z77A-GD65/Hyper 212 EVO /8GB Corsair Vengence DDR3 1600/Asus GTX 770 SLI/Samsung 840 120gb /Hitachi 1TB /Cooler Master V700/Qnix QX2710 @ 96hz/Logitech Z5300/ Razer Deathadder/NZXT Phantom 630/Windows 7 Ultimate 64

RIP, John, my best friend Oct 17th 1966 - Nov 13th 2010
RIP, Victor, my dad, June 26th 1927 - April 13th 2011
WaTaGuMp is online now   Reply With Quote
Old 11-10-2012, 07:46 PM   #71
oldsmoboat
Elite Member
 
oldsmoboat's Avatar
 
Join Date: Mar 2000
Location: Kaliforniastan
Posts: 45,686
Default

Quote:
Originally Posted by WaTaGuMp View Post
Do bullets fire in basements in space?
Not much space in the basement...
__________________
For A Friend
BetterCreditCard.Com
It's not the odds that guide me, it's the stakes
oldsmoboat is offline   Reply With Quote
Old 11-10-2012, 07:57 PM   #72
WaTaGuMp
Lifer
 
WaTaGuMp's Avatar
 
Join Date: May 2001
Location: Orange County CA
Posts: 14,867
Default

Quote:
Originally Posted by oldsmoboat View Post
Not much space in the basement...
Just fire them into the dead ATOT members bodies you have down there. Hi mods, we are talking in the necro thread.
__________________
3570k @ 4.6 1.25v /MSI Z77A-GD65/Hyper 212 EVO /8GB Corsair Vengence DDR3 1600/Asus GTX 770 SLI/Samsung 840 120gb /Hitachi 1TB /Cooler Master V700/Qnix QX2710 @ 96hz/Logitech Z5300/ Razer Deathadder/NZXT Phantom 630/Windows 7 Ultimate 64

RIP, John, my best friend Oct 17th 1966 - Nov 13th 2010
RIP, Victor, my dad, June 26th 1927 - April 13th 2011
WaTaGuMp is online now   Reply With Quote
Old 11-10-2012, 09:06 PM   #73
Paratus
Diamond Member
 
Paratus's Avatar
 
Join Date: Jun 2004
Location: 51.6 @ 17500 mph
Posts: 4,869
Default

While I know this is a necro I have to mention this.

While deep space is exceedingly cold, 2 degrees K above absolute 0, that's only if you are pointed at deep space. If you are pointed at the sun it's much warmer.

Heat transfer only happens through radiation which sucks compared to convection or conduction. So it would take hours to freeze a person exposed to deep space.

Now if these bullets were fired in orbit around a planetary body, depending on the the trajectory any slugs that missed may return the following orbit and recontact the ship they were fired from.

<- works for NASA
__________________
i7920 @ 3.33 on a CM Hyper 520/ Asus P6T Deluxe v2 & Asus USB3/SATA6 card /MSI Lightening 7970 GHZ Ed. / 6x2GB G-Skill @ 1333 / Samsung 830 256GB SSD, WD 300GB Velociraptor, WD 2TB Caviar Black, & WD 500GB / CM Praetorian T01 + 4x 80mm Panaflow Hi Speed fans./ HP LP2475w /
Paratus is online now   Reply With Quote
Old 11-10-2012, 09:11 PM   #74
Farmer
Diamond Member
 
Farmer's Avatar
 
Join Date: Dec 2003
Location: Pittsburgh, PA
Posts: 3,289
Default

It's hard to say. You would actually need to solve the problem to see if you freeze at all. If the time constant on the cooling is large, so is the steady state resistance to heat transfer, so maybe the steady state temperature of your skin may not be below freezing. Due to constant heat generation in your body, the steady state temperature is not somewhere around 2 K.

Not sure how working for NASA qualifies your post. I'm sure every 1st year science student knows about conic orbits.
__________________
Phenom II 720BE Unlocked Core @ 3.41GHz,1.55V/ Scythe Mugen 2 Rev. B / ASUS M4A78T-E / Corsair 8GB DDR3-1600 @ 1333MHz / Geforce GTX560Ti / PCP&C S610 circa 2007 / Win7-64 Ent | BF3 Stats

Last edited by Farmer; 11-10-2012 at 09:15 PM.
Farmer is offline   Reply With Quote
Old 11-10-2012, 09:27 PM   #75
Paratus
Diamond Member
 
Paratus's Avatar
 
Join Date: Jun 2004
Location: 51.6 @ 17500 mph
Posts: 4,869
Default

Quote:
Originally Posted by Farmer View Post
It's hard to say. You would actually need to solve the problem to see if you freeze at all. If the time constant on the cooling is large, so is the steady state resistance to heat transfer, so maybe the steady state temperature of your skin may not be below freezing.

Not sure how working for NASA qualifies your post. I'm sure every 1st year science student knows about conic orbits.
Any engineer who has taken heat mass transfer knows that radiation is the slowest method of heat transfer with the same source and sink temperatures in general.

And yes you would have to know more about the given scenario to figure out what the final temperature of a gun would be.

I happen to be an electrical/thermal flight controller for the ISS. We see temperatures down to -60 C on the radiators and occasionally up to 30 or 40 C on our external powered equipment depending on attitude, solar beta, and how well the cooling system is working.

People on this board tend to mention what they do if they are posting about something they are familiar with from their jobs. Like mentioning your in IT when talking about enterprise storage solutions.
__________________
i7920 @ 3.33 on a CM Hyper 520/ Asus P6T Deluxe v2 & Asus USB3/SATA6 card /MSI Lightening 7970 GHZ Ed. / 6x2GB G-Skill @ 1333 / Samsung 830 256GB SSD, WD 300GB Velociraptor, WD 2TB Caviar Black, & WD 500GB / CM Praetorian T01 + 4x 80mm Panaflow Hi Speed fans./ HP LP2475w /
Paratus is online now   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:38 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.