The Down Range Forum
Member Section => Down Range Cafe => Topic started by: philw on May 09, 2009, 07:05:18 PM
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http://channel.nationalgeographic.com/series/naked-science/2614/Overview#tab-Videos/02181_05
little about TNT
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Oh, my. That poor shotgun. :'(
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Note to self; don't use TNT in place of gunpowder.
btw........nice shed explosion.
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Damn...at 20,000fps, TNT is 'sudden' ain't it?
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Oh, my. That poor shotgun. :'(
Little JB weld, some duct tape.......it'll be good as new. :)
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http://www.youtube.com/watch?v=zesiBbCBrj0
The Navy gets the coolest toys!!! The Mark 48 Torpedo...
;D
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Oh, my. That poor shotgun. :'(
At least they used an O/U and not a beautiful SxS!
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I read this thing one time that talked about modern torpedos and it said that they blow up actually a meter or so away from the vessel in which they are trying to destroy. That the force of water caused by the detonation does more damage than a direct hit from the torpedo. It kinda looks like what happens in this video. The ship almost looks to get swallowed up by the blast instead of the actual hull being punctured and the exploding from with in.
http://www.youtube.com/watch?v=zesiBbCBrj0
The Navy gets the coolest toys!!! The Mark 48 Torpedo...
;D
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Let's blow up a dead stinky whale. :P
HILARIOUS news footage from 1970.
http://www.youtube.com/watch?v=ZFwxH3PPWiU&NR=1
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When you want to blow it up, do it right...
http://www.youtube.com/watch?v=I98YuLvTsAs&feature=related
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http://www.youtube.com/watch?v=oEiwFmiatTk&feature=related
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I read this thing one time that talked about modern torpedos and it said that they blow up actually a meter or so away from the vessel in which they are trying to destroy. That the force of water caused by the detonation does more damage than a direct hit from the torpedo. It kinda looks like what happens in this video. The ship almost looks to get swallowed up by the blast instead of the actual hull being punctured and the exploding from with in.
I saw a video on Discovery channel once where they made an explosion detonate around 200 feet below the surface under an old battleship in Australia (I think). The resulting bubble caused way more damage than a hit would have. The ship broke in half and sank quickly.
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talked to a submariner in Guam about torpedoes. he says that they do detonate under the ship and create a bubble under the ship. the lack of water dense enough to support the ship in the middle causes it to sag (when buoyancy is greater fore and aft, but heavier in the middle - midships) and the resulting stress is much to great for any ship to withstand. that destroyer was built to take severe hits and stay afloat. seperate watertight compartments etc.. but the stress from the explosion - initial shock and then the sagging in the middle - breaks her back and that's the end. :P the ship I'm on would be gone in a couple of seconds. hope we don't have another real naval war, I'd be in the middle of it, and one hell of a target.
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just a note about hogging and sagging, it's the #1 reason for ships lost at sea, the 1st mate is in charge of cargo, and if he doesn't know what he's doing he can break a ship in half in a few hours of cargo operations. and most mates are clewless.
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just a note about hogging and sagging, it's the #1 reason for ships lost at sea, the 1st mate is in charge of cargo, and if he doesn't know what he's doing he can break a ship in half in a few hours of cargo operations. and most mates are clewless.
Yes, but can they spell?
;D
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.... most mates are clewless.
Is that a pun? Clew-less?
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Yes, but can they spell?
;D
Could've been worse...he could have said "clawless"....................... ;)
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The Mark 48...
Torpedoes are self-propelled guided projectiles that operate underwater and are designed to detonate on contact or in proximity to a target. They may be launched from submarines, surface ships, helicopters and fixed-wing aircraft. The three major torpedoes in the Navy inventory are the Mark 48 heavyweight torpedo, the Mark 46 lightweight and the Mark 50 advanced lightweight.
Since sonic waves (explosion = sonic wave created by HExplosive) travel about 5 times faster in water, a more dense medium than air, the explosive force is nearly 5 times more powerfull (Newtons Third Law). If a Mark 48 detonates on contact or within the vacinity of a ship, the damage would be similar. Depth charges are based on that damaging wave and the physics involved in the displacement of the water around the charge.
The 650 lbs of high explosive in a M48 is devastating on a direct hit but nearly as deadly if detonated at or near the target. I think, and can verify with my brother on the max depth for optimal destructive force but then he would have to shoot me... ;D
As they said in my debriefing..."I don't have a need to know"... ;)
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just a note about hogging and sagging, it's the #1 reason for ships lost at sea, the 1st mate is in charge of cargo, and if he doesn't know what he's doing he can break a ship in half in a few hours of cargo operations. and most mates are clewless.
That was why the 4 and 5 masted sailing ships did not last, bow and stern would lift on waves and middle would break.
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bow and stern would lift on waves and middle would break.
pictures from a trip to Japan from Hawaii. we had a hull crack caused by the seas and the captain refusing to slow down despite warnings from the chief engineer. and these guys are supposed to know what they're doing. they take classes and train for this and they still screw up.
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pictures from a trip to Japan from Hawaii. we had a hull crack caused by the seas and the captain refusing to slow down despite warnings from the chief engineer. and these guys are supposed to know what they're doing. they take classes and train for this and they still screw up.
OH, HELL NO...!!!!!!!!!!...................... so saith the 'Landlubber' ............ :o :o :o :o :o
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Nice Tanker
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Funny where U Tube takes ya..... Old Aircraft Carrier crashes....
http://www.youtube.com/watch?v=4gpCLeWqY0w&NR=1
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Nice Tanker
eight years old and just under 600 feet long. carries around 37,000 tons of cargo. mostly diesel fuel and aviation fuel for the Navy
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Thats about 600 feet shorter than a Nimitz class carrier.....don't turn too quick does she!
;)
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Thats about 600 feet shorter than a Nimitz class carrier.....don't turn too quick does she!
depends on how fast she's going. has both bow and stern thrusters. don't really need tug boats to get in and out of port, but it sure is safer and quicker with them.
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That was why the 4 and 5 masted sailing ships did not last, bow and stern would lift on waves and middle would break.
Don't remember if this is what caused the Edmund Fitzgerald to sink, but it was one of the theroies at one time. A guy I knew from college named David Weiss, nicknamed Cowboy, was lost in the sinking along with Tom Bentsen from my hometown.
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Don't remember if this is what caused the Edmund Fitzgerald to sink, but it was one of the theroies at one time. A guy I knew from college named David Weiss, nicknamed Cowboy, was lost in the sinking along with Tom Bentsen from my hometown.
I also knew one of the coasties involved in the search. I was on a ship that carried the same cargo, (iron) and the big worry was that the stuff shifts alot. due to the wait of the material you can't fill the cargo hold and so there's a lot of area for it to shift causing instability. of course we won't know what happened to the 'Fitzgerald' because there are so many possibilties.
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Deepwater,
I went to Northwestern Michigan College in Traverse City which also housed the Great Lakes Maritime Accademy. My first year roomate was a Maritimer, so I met a lot of the students in that program. When the Fitz was lost and I heard that David Weiss was one of the cadets from the program and was lost I didn't know who they were talking about. Until that time I had only known him as Cowboy. Cowboy was a good person. We had a memorial service on the docks at the Maritime Accademy to honor David Weiss and the rest of the crew. It's been along time ago, but I beleive that Tom Bentsen from my hometown had also attended the Accademy, but that was before my time. I was fortuneate one time to have by chance been at the Soo locks when the Fitz came through.
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Blackwolfe:
I to have lost friends at sea, in fact been involved in searching for them. it's always difficult not knowing if they are still out there waiting to be picked up when you stop looking. anyway, I know what you feel when you remember your friends and the Fitz. My 1st engineer on the ship studied there as well and still lives in Michigan, the maritime world is very small.
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A little explosion that we filmed for our kid's show. That's me doing the camera on the bottle. Just FYI, GatorAide bottles are the toughest ones and consequently make the loudest noise. The video doesn't quite do it justice but the other camera person was partially deaf the rest of the day.
http://s252.photobucket.com/albums/hh20/alfsauve/?action=view¤t=ExplosionShort.flv (http://s252.photobucket.com/albums/hh20/alfsauve/?action=view¤t=ExplosionShort.flv)
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A little explosion that we filmed for our kid's show. That's me doing the camera on the bottle. Just FYI, GatorAide bottles are the toughest ones and consequently make the loudest noise. The video doesn't quite do it justice but the other camera person was partially deaf the rest of the day.
http://s252.photobucket.com/albums/hh20/alfsauve/?action=view¤t=ExplosionShort.flv (http://s252.photobucket.com/albums/hh20/alfsauve/?action=view¤t=ExplosionShort.flv)
VERY entertaining video....................(ok. what's the mystery solution? I won't tell) ::)
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This is quite the rage with high schoolers recently. Just search for "works bomb"
Our videos are used to teach children biblical principles so there was a message following the explosion that "The Professor" delivered once he had the boys and girls' attention. I cut the video down so DRTV could just enjoy the explosion part.