| Author |
 Topic  |
|
twud
Advanced Member
USA
1385 Posts |
 Posted - Oct 30 2009 : 15:17:26
|
Do bullets get hot?
I was watching the Military channel last night.
They were doing one of their top 10 deals on planes. Number 10 was the SR 71 super spy plane. At altitude they fly at 3x the speed of sound (probably faster but for the secrecy). They said when the plane lands the hull tempurature was around 650 degrees from the air friction.
This got me thinkin'. Most bullets fly that fast or faster in a denser medium than air at 50,00 ft., they also endure air friction (although for not as long), they must endure emmense friction going down the bore, and some heat(maybe) from the propellent charge.
So the million dollar question is, Does a bullet arrive at it's target hot?
I've heard soldiers say that when struck the wound burns.
I really need something more constructive to think about.
Mark
|
NRA Life Member
 |
|
|
IraqVet2003
Advanced Member
USA
1206 Posts |
Posted - Oct 30 2009 : 16:12:54
|
Actually the Blachbird lands with a hull surface temp of 1000 deg F. The difference we need to look at here though is sustained speed Vs. deminishing speed. The Blackbird can hold mach 3 speeds for up to 90 mins at a time. A bullets on the other hand yes has frinction going down the barrel causing heat and then air friction once leaving the barrel. However once the bullet leaves the barrel it begins to slow some calibers loose speed slower than others but eventually the bullet cools do to air passing over it Vs. heating up due to air friction.
The Bleackbird is 98% Titanium, the Titanium was bought by a ghost company set up by the CIA, from the largest producer of titanium in the world Russia. The engineers ran into a problem with the hull plates that when a bird would come in super heated when the plates cooled they would warp and not return to shape. The way they got around this was to coragate the plates in key areas the ribs lying with the direction of the hull of the plane. When the Blackbird is on the ground it leaks like a sive, when it takes of it must link up with a tanker at altitude minutes after. This is said by some to be the hardest of all requirment to be a pilot of the SR-71. A plane designed to fly super sonic is very difficult to control at the sub sonic speeds it must fly to match the speed of the tanker. It is the heat produced by air friction that make the plates expand and seal the tanks, when full it will hold 80,000 lbs of JP7 fuel.
Here is a link that tells you most of what I said and more about the SR-71 Blackbird.
http://www.youtube.com/watch?v=-1250fZuhUg |
Edited by - IraqVet2003 on Oct 30 2009 16:28:26 |
 |
|
|
Kansas Ed
Advanced Member
USA
701 Posts |
Posted - Oct 30 2009 : 16:35:15
|
Lil brother was in the Navy during Gulf-I as an Avionics Tech on the Carl Vinson. He had been sent to a base (I forget the name) in Nevada for training. Apparently this base had been Army, till they didn't want it anymore, who turned it over to the AF, who later turned it over to the Navy.
While he was there at the base in Nevada an SR-71 came blasting in, out of fuel, requesting an airstrip to land on. Getting permission from the Navy, they hit the runway hot, and the pilots started screaming for the largest hangar to get the plane into immediately. The Navy told them that they weren't displacing Navy aircraft from Navy hangars for non-Navy equipment....but that they could park it on the ramp and they would provide guards to watch it.
Brother said it took a couple of days to truck in the special fuel...while the plane sat on the ramp the whole time. He indicated that he figured that heads rolled over that one. Saying that it was an incredible aircraft...from his distance view..as the MP's wouldn't allow anyone even remotely near it.
Didn't mean to steal the thread, but figured you all would enjoy that little story.
Ed |
Are we there yet??? |
|
|
|
Paul B
Advanced Member
1681 Posts |
Posted - Oct 30 2009 : 17:19:16
|
The only navy base in Nevada that I can think of would be fallon NAS at Fallon Nevada. Passed through there more than a couple of time. Damned desolate area. Sure do wish I could afford to move back to Nevada though. I really liked it there.
Paul B. |
|
|
|
lightman
Average Member
127 Posts |
Posted - Oct 30 2009 : 23:29:06
|
| Hey Ed,That was an interesting story.I guess everyone forgets who is on there side sometimes.Guess I'm guilty of high jacking too, sorry. Lightman |
|
|
|
fishstan2
Advanced Member
USA
1601 Posts |
Posted - Oct 31 2009 : 03:12:11
|
Twud, have been shot twice, Not in the Army but by my Brother and a crazy lady who lived in our area when I kid on the farm. Once by a 22 (thru my left calf muscle in and out) and I am here to tell you it burned like "Hell", long story, but my Brother and I were being very stupid, very, very, very stupid. LOL. The other time I was shot in the back side buy 00 Buck and Rock Salt!!!!. The salt as you know burns but the 00 really burned (Mom was a nurse and picked all of it out with tweezers, no fun). That time all I was doing was going accross the ladies property and she thought I was a thief, after the fact she said she was sorry, still hurt very bad. Stan |
WILLIAMS, STANLEY W.
SGM U.S. ARMY
CAMP TAJI IRAQ
"SHOOT EM FROM LONG" RANGE" |
|
|
|
Wolfgang
Advanced Member
1553 Posts |
Posted - Oct 31 2009 : 07:16:59
|
| Requires a real long answer to explain but "YES" bullets heat from air and from the barrel. I'll explain later, heading to the VA ER to see if they'll let me sitting around there for three weeks like I've been doing waiting on a doctor appointment. Oh, ya, it's real bad now! Check back in when/if I can. |
 Carry the battle to them. Don't let them bring it to you. Put them on the defensive and don't ever apologize for anything."
Harry S. Truman
mark@fire-iron.biz
|
|
|
|
Mike70560
Junior Member
USA
73 Posts |
Posted - Oct 31 2009 : 09:26:21
|
| If you shoot NRA highpower enough you will eventually have the opportunity to pick up a freshly fired bullet while in the pits. You will only do it one time. |
Mike |
|
|
|
Perferator
Average Member
USA
144 Posts |
Posted - Oct 31 2009 : 09:36:40
|
| Interesting thread, guys. Stan, that neighbor lady.....was this in Beverly Hills?? :) |
I love to shoot. Shoot, I could shoot all day. Shoot the breeze, shoot the bull, heck shoot the cat. |
|
|
|
coyotin
Junior Member
USA
62 Posts |
Posted - Oct 31 2009 : 09:44:49
|
| Twud, I saw a similiar show on the military channel where the F6FHellcat 6 .50 cal machine were sending hot lead thru the zeros igniting their fuel tanks. I would have to say the lead gets just as hot as the brass, for a few moments anyway. |
"Show me something worthwhile and I will show you someone who has overcome adversity" Lou Holtz |
|
|
|
AvyDriver
Average Member
USA
80 Posts |
Posted - Oct 31 2009 : 11:50:30
|
| I am on the range all the time because of my job, for example all this past week and all next week 8 hours a day (bummer, lol). We get pistol ammo that will come back on us out of the burm on occasion. Its never fast enough to do any harm but Ive had it land at my feet and pick it up before. Yes its hot, quit hot, but not so hot you cant play hot potatoe between your hands. |
Brett
New Reloader
243 Win Howa 1500 heavy bbl on B&C stock & Nikon Monarch 3 12x42
Dolce Bellum Inexpertis |
|
|
|
AvyDriver
Average Member
USA
80 Posts |
Posted - Oct 31 2009 : 11:51:54
|
| Did I mention I got to shoot 3000 rounds in the past week, keep in mind I am an instructor so its all during lunch and after everyone leaves? I just wanted to share. =D |
Brett
New Reloader
243 Win Howa 1500 heavy bbl on B&C stock & Nikon Monarch 3 12x42
Dolce Bellum Inexpertis |
|
|
|
IraqVet2003
Advanced Member
USA
1206 Posts |
Posted - Oct 31 2009 : 13:07:52
|
| Mike70560, given your post, at what point would a bullet not me hot to the touch? Correct me if I am wrong but IIRC NRA highpower is 600-1000 yards yes? Thanks Vet |
|
|
|
lefty o
Advanced Member
USA
583 Posts |
Posted - Oct 31 2009 : 13:48:20
|
| shot a lot of critters, even with some pretty fast rifles have never seen singed hair around an entrance wound. |
|
|
|
twud
Advanced Member
USA
1385 Posts |
Posted - Oct 31 2009 : 16:04:55
|
I guess it stands to reason that if a barrel gets hot so would the projectile. Although it stands to reason that some of this comes from the burning propellent.
Mark |
NRA Life Member
|
|
|
|
Mike70560
Junior Member
USA
73 Posts |
Posted - Oct 31 2009 : 19:11:39
|
quote:
Originally posted by IraqVet2003
Mike70560, given your post, at what point would a bullet not me hot to the touch? Correct me if I am wrong but IIRC NRA highpower is 600-1000 yards yes? Thanks Vet
It is shot at 200, 300, and 600 (or 500) yards in a "across the course" match.
600 yards for mid-range
800, 900, 1000 yards for Palma
1000 yards for Long range
I do not remember the distance but more than likely the one I grabbed was at 600 yards or under as I shot mostly across the course matches, but they are hot.
Flight time from 600 to 1000 yards is minimal and the bullet is supersonic so I would not think there is much difference in heat in those ranges.
it will happen when someone shoots the protection berm and the bullet then hits a target frame without enough velocity to penetrate and falls down in the pits. |
Mike |
Edited by - Mike70560 on Oct 31 2009 19:15:41 |
|
|
|
Topic |
|
Heat
