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Scuba Forum / General / April 2005You guys have talked about and maybe even done it, but here's a recent video
http://www.yukoneer.com/misc/Tank%20shooto...out%20Final.wmv See you in May. > http://www.yukoneer.com/misc/Tank%20shooto...out%20Final.wmv > > See you in May. Link doesn't work, Chilly, see you in Houston tomorrow. > > http://www.yukoneer.com/misc/Tank%20shooto...out%20Final.wmv > > > > See you in May. > > > Link doesn't work, Chilly, see you in Houston tomorrow. Hmm. :^( Bummer. It opens perfectly where I found it. It's a video. Oh well, no time to care. Until tomorrow. Bye again all. >>http://www.yukoneer.com/misc/Tank%20shooto...out%20Final.wmv >> >>See you in May. > > Link doesn't work, Chilly, see you in Houston tomorrow. <http://www.yukoneer.com/misc/Tank%20shootout%20Final.wmv> > http://www.yukoneer.com/misc/Tank%20shooto...out%20Final.wmv > > See you in May. Try this link instead <http://www.yukoneer.com/misc/Tank%20shootout%20Final.wmv> > ? http://www.yukoneer.com/misc/Tank%20shooto...out%20Final.wmv > ? [quoted text clipped - 4 lines] > > <http://www.yukoneer.com/misc/Tank%20shootout%20Final.wmv> That was amazing... I'll definitely be passing it on. > That was amazing... I'll definitely be passing it on. That steel tank took 3 hits from a .30/06 before it went, and it "failed" at the bottom radius, which theoretically should have been the part of the tank with ther best geometry to deflect the bullet. I have to say, I have heard that a 30# propane bottle wrapped with 30 feet of 50 grain per foot det cord, initiated with a number 8 nonel and 2 oz. PETN booster contained under the base (with the obligatory gallon of nitromethane set on the top of the whole mess) is far more impressive. > ? http://www.yukoneer.com/misc/Tank%20shooto...out%20Final.wmv > ? [quoted text clipped - 4 lines] > > <http://www.yukoneer.com/misc/Tank%20shootout%20Final.wmv> Thanks, Alan!! :^) Cool link. Impressive performance by the steel tank. You just have to wonder, what would they have done if the steel tank had not finally punctured. I mean who, in their right mind, would go out and pick up a fully pressurized tank that had been shot a half dozen times? Who, being responsible, could leave it out there for somebody else to pick up. I guess it would have been time to get out the trusty .223 with armor piercing shells. I suspect they would have gone in one side and out the other before the tank even fell over. Lee > I guess it would have been time to get out the trusty .223 with armor > piercing shells. I suspect they would have gone in one side and out the > other before the tank even fell over. Good idea. It will balance the momentum. Matthias No wonder the shark in "Jaws IV: The Revenge" was so pissed off, Chief Brody couldn't have possibly blown up the original one! > I suspect they would have gone in one side and out >> the other before the tank even fell over. > > Good idea. > It will balance the momentum. What fun would it be to balance the momentum? I want to see a film where the valve is shot off.  SignatureSteve The above can be construed as personal opinion in the absence of a reasonable belief that it was intended as a statement of fact. If you want a reply to reach me, remove the SPAMTRAP from the address. > > I suspect they would have gone in one side and out > >> the other before the tank even fell over. [quoted text clipped - 4 lines] > What fun would it be to balance the momentum? I want to see a film where the valve is > shot off. The IRA made a mortar launcher out of angle iron and used compressed gas bottles for propellant. The rig was set up in the back of a van with the roof cut out, and the bottles angled to clear the walls and hit in the courtyard. The valve was smacked off the compressed gas bottles, and I cant remember for sure, but I think they had enough thrust to launch a 50 pound warhead. One was used to attack 10 Downing Street in 1991. > Cool link. Impressive performance by the steel tank. Had to be seen to believe it. I'd like to know what load they were shooting. > You just have to wonder, what would they have done if the steel tank had not > finally punctured. I mean who, in their right mind, would go out and pick > up a fully pressurized tank that had been shot a half dozen times? Kinda gives you a bit of repsect for the EOD guys, eh? I bet they'd send a robot out to open the valve, or get a .300 mag and move up a little... > Who, being responsible, could leave it out there for somebody else to pick > up. I could tell you a story about a dud 81mm HEDP round that we found and reported that would curl your hair. > I guess it would have been time to get out the trusty .223 with armor > piercing shells. I suspect they would have gone in one side and out the > other before the tank even fell over. Personally, I doubt it. The 5.56mm M855 has a steel tip, and despite this, its penetration performance is only roughly equal to the 7.62mm, M80 Ball, which is an all-lead core round. Since they were using an M1 Girand and .30-06 (7.62 x 63) ammo, its muzzle velocity is typically around 90fps higher than .308 (7.62 x 51). Insofar as safe disposal, they did get lucky in one of their shots on the St tank: since a hiss can be heard, it sounded like they got a partial penetration. This PP would have allowed the tank to safely empty, given time, on its own without human intervention risk. However, what this reveals is that a smarter test setup would have been to purposefully include a slow release system. Such venting wouldn't have made a major difference in the test (eg, 2950psi vs 3000psi), but in the event that they couldn't get the tank to go, it would have already been on a glide path to safely vent off over the next XX hours without having to send a human up to risk doing it. Simply cracking the valve slightly open would have been enough to done this, but I'd be concerned about the tank getting knocked over and the valve closing due to a lucky roll-back in the wrong direction, so I'd say that the smart way to have done this would have been to take an old 1st stage regulator (or similar device) with a small vent hole drilled through one of the LP or HP port plugs...this would allow the tank valve to be fully opened to minimize a undesirable valve roll-back from shutting the tank. Of course, the other alternative is to just upgun: a .50 will do it. -hh |
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