User Panel
User Panel
User Panel
|
Posted: 6/29/2018 3:32:37 AM EDT
[#1]
Krytox would work fine. Lube-wise.
Inertia is not a problem either. You're either mag-booted to a deck, or you have a propulsion system with you. Other wise, every time you moved quickly, you'd go careening off. |
|
|
|
Posted: 6/29/2018 3:42:03 AM EDT
[#2]
Now, consider
A. The moon (18% gravity, 0% atmosphere) B. Mars (50% gravity, 3% atmosphere, depending on season) In both cases, you can ignore the gravity and atmosphere, generally. It's still point blank, for all practical purposes, to the visible horizon. MAYBE some windage in a massive dust storm on Mars, but, who's going to be fighting then? Everyone will be huddled in habitats. The real question, is defensive. The offensive weapons will be so easy it's laughable. But, just a nick in the self contained atmosphere bubble you're wearing is gonna be a kill, right now. The real issue is self sealing suits, quick patches, shields and armor, etcetera. |
|
|
|
Posted: 6/29/2018 3:43:17 AM EDT
[#3]
Quote HistoryQuoted:
Thank the Lord, at least one.  |
|
|
|
Posted: 6/29/2018 3:51:56 AM EDT
[#4]
Heinlein and Varley imagined ballons, for example, with a sticky patch. Floating around. You get holed, and the balloons, just filled with ordinary ship air, will start to drift towards the leak. When they reach it, the balloon pops and the string is blown out, followed by the patch, exactly like a heavy duty tire patch, blowing the stem out and the patch seals the leak. That's brilliant. I can imagine a suit with yet another layer, and some sort of space-slime layer. You get a small tear, the slime oozes out and solidifies as the plasticizers flash out. That's just one idea.
|
|
|
|
Posted: 6/29/2018 3:52:49 AM EDT
[#5]
A Sci-fi movie could use with this rifle with few modifications.
|
|
|
|
Posted: 6/29/2018 3:53:36 AM EDT
[#6]
Quote HistoryQuoted:
Only problem I see is like another poster pointed out, lubrication. Quote HistoryQuoted:
Quoted:
Thank the Lord, at least one. |
|
|
|
Posted: 6/29/2018 3:54:16 AM EDT
[#7]
Quote HistoryQuoted: Only problem I see is like another poster pointed out, lubrication. Here it is.  Attached File |
|
|
|
Posted: 6/29/2018 4:03:51 AM EDT
[#8]
Polyperfluoralkoxyether-PTFE is the hi techest of high tech futuristic shit. I already use silicone based, non-petroleum lube on my stuff. Krytox takes that a step further. It's about 25$ an ounce but it goes incredibly far.
It's so inert it's unreal. Back in the day I used to use teflon tape on ground glass joints for highly reactive reagents under high vacuum high temp reflux. Then DuPont came out with krytox. It was so brilliant. A leetle wee dab of krytox on the joint, and you can boil HI solutions for days. No change. <1Torr, highly reactive reagents at 130 C. No worry. Lube is not any kind of issue. Leave alone the near zero friction coatings. |
|
|
|
Posted: 6/29/2018 4:10:37 AM EDT
[#9]
Quote HistoryQuoted:
but what if you happened to be stationed in geosynchronous orbit over NY? |
|
|
|
Posted: 6/29/2018 4:11:01 AM EDT
[#10]
An aside, a general rule of thumb you should be aware of is that, generally, the more reactive the reagents, the more stable the products. Nitrogen is very unreactive. So nitrogen compounds tend to be unstable. Most explosives are nitrogen based. OTOH, fluorine is the most reactive element. Fluorine compounds tend to be very stable. Teflon is a fluorine compound. Polytetrafluoroethylene.
The noble gasses do form some compounds, as does gold. Many of them are incredibly unstable. There are a half dozen gold compounds so unstable they explode from a loud noise, or just because fuck it, I'm gonna explode now because fuck you, I didn't want to form a compound anyway. |
|
|
|
Posted: 6/29/2018 4:24:50 AM EDT
[#11]
Quote HistoryQuoted: Since zero gravity means weight doesn't matter why not a howitzer with the hubble telescope mounted on top of it? |
|
|
|
Posted: 6/29/2018 4:25:04 AM EDT
[#12]
Quote HistoryQuoted:
Ok. Guns work just fine in vacuum. No external oxygen required. Assuming microgravity, point blank is infinite, no velocity loss for any range, practically speaking. No bullet drop. No windage. It's pure ballistics and relative velocity. NO DIFFERENCE BETWEEN THE TRAJECTORY OF BULLET WEIGHTS. The only difference is time of flight, which for practical calculations, is a constant relative to velocity. Issues: 1. You will need to set the sight, whichever you choose, to perfectly flat. No more setting zero with an assumed upward bore axis. Line of sight and line of bore will now be parallel. 2. Rather than figuring bullet drop, and windage for conditions, plus a moving target when applicable, now you need only figure relative velocity. 3. IMHO, tracers, 100% tracers, would be best for standard issue ammo. Tracers lead back to the shooter, so a delay burn is better. Say, ignition at 100 yards. 4. A highly variable, highly magnified scope would be nice, but really, a long burn tracer and iron sight would be even better. A 3000 meter burn would be great. Remember, bullet weight and ballistic coefficient no longer apply. Pack the tracer compound in there. Basically, if you can see it, you can hit it, virtually, forever. You can double the bullet length of a 5.56, use it all for extra tracer compound, and that measly 2200 MV is still 2199 fps at 3000 yards, in space. Quote HistoryQuoted:
Quoted:
Will gunpowder even combust in a vacuum? Assuming microgravity, point blank is infinite, no velocity loss for any range, practically speaking. No bullet drop. No windage. It's pure ballistics and relative velocity. NO DIFFERENCE BETWEEN THE TRAJECTORY OF BULLET WEIGHTS. The only difference is time of flight, which for practical calculations, is a constant relative to velocity. Issues: 1. You will need to set the sight, whichever you choose, to perfectly flat. No more setting zero with an assumed upward bore axis. Line of sight and line of bore will now be parallel. 2. Rather than figuring bullet drop, and windage for conditions, plus a moving target when applicable, now you need only figure relative velocity. 3. IMHO, tracers, 100% tracers, would be best for standard issue ammo. Tracers lead back to the shooter, so a delay burn is better. Say, ignition at 100 yards. 4. A highly variable, highly magnified scope would be nice, but really, a long burn tracer and iron sight would be even better. A 3000 meter burn would be great. Remember, bullet weight and ballistic coefficient no longer apply. Pack the tracer compound in there. Basically, if you can see it, you can hit it, virtually, forever. You can double the bullet length of a 5.56, use it all for extra tracer compound, and that measly 2200 MV is still 2199 fps at 3000 yards, in space. |
|
|
|
Posted: 6/29/2018 4:29:59 AM EDT
[#13]
Quote HistoryQuoted: Actually your projectile’s velocity would increase. If your mv was 2200fps, you’d have a further acceleration phase from the tracer compound imparting thrust during it’s combustion. |
|
|
|
Posted: 6/29/2018 4:34:29 AM EDT
[#14]
In order to provide thrust, it has to be a reaction that evolves gas that flows away. Tracer compound is mostly an oxidizer and an alkali metal substitution. Heat and photons.
|
|
|
|
Posted: 6/29/2018 4:43:56 AM EDT
[#15]
Quote HistoryQuoted:
Will gunpowder even combust in a vacuum? |
|
|
|
Posted: 6/29/2018 4:45:47 AM EDT
[#16]
Quote HistoryQuoted:
Lever action rifle or revolver. Because most guns won't cycle properly in space. |
|
|
|
Posted: 6/29/2018 4:46:09 AM EDT
[#17]
Quote HistoryQuoted:
Lever action rifle or revolver. Because most guns won't cycle properly in space. kidding 
|
|
|
|
Posted: 6/29/2018 4:50:30 AM EDT
[#18]
Quote HistoryQuoted:
Now, consider A. The moon (18% gravity, 0% atmosphere) B. Mars (50% gravity, 3% atmosphere, depending on season) |
|
|
|
Posted: 6/29/2018 5:07:59 AM EDT
[#19]
Quote HistoryQuoted:
Mars gravity is 38% of Earth's. But I enjoy being pedantic, too!
|
|
|
|
Posted: 6/29/2018 5:09:50 AM EDT
[#20]
I just worked 24/48, so I'm dewinding and uncompressing. Yesterday's fun was a known schizo with a sledgehammer and pick/mattock yelling at people.
|
|
|
|
Posted: 6/29/2018 5:18:48 AM EDT
[#21]
Quote HistoryQuoted:
I just worked 24/48, so I'm dewinding and uncompressing. Yesterday's fun was a known schizo with a sledgehammer and pick/mattock yelling at people. |
|
|
|
Posted: 6/29/2018 5:35:09 AM EDT
[#22]
I wonder what configuration the military cooked up for the AR15s they planned to mount to spaceplanes for disabling enemy satellites as part of the Dyna-Soar program during the 60s.
https://medium.com/war-is-boring/wondering-what-the-u-s-air-forces-secretive-spaceplane-can-do-history-offers-clues-9b5a30ea7084 The Dyna Soar inspector would be backed off from the target satellite if the pilot judged it to be a threat. With the addition of a nuclear radiation detector and a mass measurement system, the pilot could determine whether the satellite in question was equipped with a nuclear power source or warhead. Mission time was up to 24 hours.
If the crew judged the target satellite to be an unhardened, non-nuclear target, the negation system to be used sounds quaint—a rifle. An AR-15, .223-caliber automatic rifle, to be exact. The pilot wasn’t to simply roll the window down and take potshots at the satellite. Instead, the AR-15 was mounted to the sensor turret. The crew could fire it at the satellite from a range of 100 to 200 feet to damage solar panels, rocket motors and other delicate structures. 
Shuttle door gunner was close to being a real thing .
|
|
|
|
Posted: 6/29/2018 5:40:58 AM EDT
[#23]
Quote HistoryQuoted:
You go ahead and strap yourself to a Howitzer and shoot it. Have fun with your TBI. No gravity does not equal no inertia. Quote HistoryQuoted:
Quoted:
Quoted:
Need recommendations on the best of the best for combat in space. Actually shtf, no wait hd, eff it all of it. No budget here people. Any optics you think I should go with? What should I zero at? And go... Joking aside, lots of potential up there. No gravity does not equal no inertia.
|
|
|
|
Posted: 6/29/2018 5:44:00 AM EDT
[#24]
Quote HistoryQuoted:
Now, consider A. The moon (18% gravity, 0% atmosphere) B. Mars (50% gravity, 3% atmosphere, depending on season) In both cases, you can ignore the gravity and atmosphere, generally. It's still point blank, for all practical purposes, to the visible horizon. MAYBE some windage in a massive dust storm on Mars, but, who's going to be fighting then? Everyone will be huddled in habitats. The real question, is defensive. The offensive weapons will be so easy it's laughable. But, just a nick in the self contained atmosphere bubble you're wearing is gonna be a kill, right now. The real issue is self sealing suits, quick patches, shields and armor, etcetera. Damn, those Fudds were right after all! |
|
|
|
Posted: 6/29/2018 5:57:51 AM EDT
[#25]
|
|
|
|
Posted: 6/29/2018 5:59:42 AM EDT
[#26]
Quote HistoryQuoted:
Will gunpowder even combust in a vacuum? |
|
|
|
Posted: 6/29/2018 6:02:26 AM EDT
[#27]
Quote HistoryQuoted:
You managed to yell at people while wielding a sledgehammer for that long? Quote HistoryQuoted:
Quoted:
I just worked 24/48, so I'm dewinding and uncompressing. Yesterday's fun was a known schizo with a sledgehammer and pick/mattock yelling at people. --EOR-- |
|
|
|
Posted: 6/29/2018 6:05:02 AM EDT
[#28]
|
|
|
|
Posted: 6/29/2018 6:06:36 AM EDT
[#29]
Quote HistoryQuoted:
but what if you happened to be stationed in geosynchronous orbit over NY?
|
|
|
|
Posted: 6/29/2018 6:10:04 AM EDT
[#30]
I'm sorry but the F2000 is the official issue weapon of the USSF
|
|
|
|
Posted: 6/29/2018 6:17:15 AM EDT
[#31]
If you fire a bullet in space does it continue to travel at the same fps...forever?
|
|
|
|
Posted: 6/29/2018 6:31:40 AM EDT
[#32]
Quote HistoryQuoted:
If you fire a bullet in space does it continue to travel at the same fps...forever? |
|
|
|
Posted: 6/29/2018 6:35:34 AM EDT
[#33]
*24,000 years later.
"You know, G'raxxzl, we should attend the space opera ton-" *thwip-splat! "Holy Zarquon, B'rezeab! Are you froodl? Oh no!" 
And that was how the brazarkians discovered they were not alone in the universe. Except they were, because the civilization from which the projectile came had self-immolated in an internecine squabble over would pay for the free government cheese 8000 years before the bullet accidently killed poor B'rezeab. |
|
|
|
Posted: 6/29/2018 6:43:26 AM EDT
[#34]
why not just P90's like this Tier 1 crew
|
|
|
|
Posted: 6/29/2018 6:45:14 AM EDT
[#35]
lol
|
|
|
|
Posted: 6/29/2018 6:58:22 AM EDT
[#36]
Quote HistoryQuoted:
why not just P90's like this Tier 1 crew http://www.sg1props.com/sites/default/files/styles/article_feature_image/public/media/articles/featured/FullSize-sg10717-0158xe.jpg?itok=NzXDOnSK&c=9ee6e754b458ae0993d90ab8d6b48d25 Low recoil impulse Ambidextrous Decent capacity AP ammo for puncturing suits SS197/frangible for sensitive inside use Compact Decent brass catcher already exists Incorporate a laser parallel laser close to the bore, and mod the ergos a bit for use with a vac suit... I’d also probably switch to steel cases, and mod the brass catcher with a magnet to keep the casings from wandering back into the action in micro g. 
|
|
|
|
Posted: 6/29/2018 7:03:42 AM EDT
[#37]
Quote HistoryQuoted:
Will gunpowder even combust in a vacuum? YES, gunpowder will burn perfectly in space! Why is this still a question? |
|
|
|
Posted: 6/29/2018 8:23:59 AM EDT
[#38]
Hmm, May need some sort of caseless ammo. We don't need thousands of brass casings orbiting the earth at 17,000mph.
|
|
|
|
Posted: 6/29/2018 8:33:43 AM EDT
[#39]
Quote HistoryQuoted:
Will gunpowder even combust in a vacuum? Skip to 5:26 for tl;dw [youtube]Zv6KQzlLwU4?t=5m26s[/youtube] |
|
|
|
Posted: 6/29/2018 8:37:46 AM EDT
[#40]
Storm trooper white with black trim.
I bet PSA would help us out on that |
|
|
|
Posted: 6/29/2018 8:39:06 AM EDT
[#41]
Quote HistoryQuoted: Since zero gravity means weight doesn't matter why not a howitzer with the hubble telescope mounted on top of it? |
|
|
|
Posted: 6/29/2018 8:42:30 AM EDT
[#42]
Heavy bolter or melta.
|
|
|
|
Posted: 6/29/2018 8:55:47 AM EDT
[#43]
Quote HistoryQuoted:
gyrojet will return  Attached File Attached File |
|
|
|
Posted: 6/29/2018 9:12:13 AM EDT
[#44]
Recoil has to be dampened at all cost.
All gass expansion will require counter-balance so it is neutral in all directions. Something that looks like a supressor will need to be used to duct it. Here is a good start; 
I like the White: 
|
|
|
|
Posted: 6/29/2018 9:14:32 AM EDT
[#45]
Quote HistoryQuoted:
Sort of, not really. Maybe it would work better in a cartridge and ignited all at once with a primer. Skip to 5:26 for tl;dw  https://www.youtube.com/watch?v=Zv6KQzlLwU4?t=5m26sQuote HistoryQuoted:
Quoted:
Will gunpowder even combust in a vacuum? Skip to 5:26 for tl;dw https://www.youtube.com/watch?v=Zv6KQzlLwU4?t=5m26sIf anyone stillllllll doubts it..... Here is a Mythbusters snippet to help assuage your unfounded doubts.
https://m.imgur.com/gallery/OX84RQV |
|
|
|
Posted: 6/29/2018 9:19:44 AM EDT
[#46]
Quote HistoryQuoted:
If you fire a bullet in space does it continue to travel at the same fps...forever? |
|
|
|
Posted: 6/29/2018 9:21:05 AM EDT
[#47]
Quote HistoryQuoted:
A Sci-fi movie could use with this rifle with few modifications.
https://cdna.artstation.com/p/assets/images/images/007/751/964/large/rolf-bertz-hera-arms-cqr-rolf-bertz.jpg?1508270995 |
|
|
|
Posted: 6/29/2018 9:23:11 AM EDT
[#48]
Whatever you have, you better make sure you have a tether on it!
|
|
|
|
Posted: 6/29/2018 9:27:40 AM EDT
[#49]
For weightless and vacuum infantry warfighting, handheld lasers are the key. No recoil, which most projectile weapons will have an will cause all kinds of problems in a weightless environment. The laser doesn't have to be very strong, just strong enough to put a hole in the enemy infantry suit; at that point the vacuum would stop or kill them. In a weightless environment, the technology has probably advanced to the point where a single man could carry the weight currently required for laser weapons.
|
|
|
|
Posted: 6/29/2018 9:31:51 AM EDT
[#50]
P90, all you need to do is pierce their suit and nature takes over from there.
|
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
