nestork wrote in news:nestork.b197b28 @diybanter.com:
Correct. Different sizes for different purposes.
Depends on what you're hunting. The ammunition used for squirrel, rabbit, grouse, pheasant, or dove is normally lead pellets, whereas non-toxic shot (steel or copper, for instance) is required when hunting waterfowl.
Indeed they do.
That is exactly what happens.
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I think I've got it! (-:
Fascinating!
-- Bobby G.
nch
Interesting story that. I read somewhere that the idea of a satellite gun is not actually possible. There is a top limit to muzzle velocity that cannot be exceeded and is not sufficient to launch a satellite. Though a rail gun might.
This is the reason why depleted uranium is used in projectiles.
end:
A satellite gun isn't possible, even if you could get enough velocity. An orbit must include the point of the last change in velocity. In the case of a bullet, it's at the end of the barrel so the orbit would include this point. The next orbit the would be satellite would intersect the ground somewhere next to the gun (where the gun was).
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Ever heard of a recoilless rifle? "Every action has an opposite and equal reaction" I believe any "space projectile weapon" would have to operate with the same principles as a recoilless gun. ^_^
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If you're saying that a rocket can launch a satellite, then yes, I suppose it can. ;-) However, the same principle applies; the orbit must contain the last point of delta-V.
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DUH!, I was under the impression you were discussing firing a gun in space from a satellite. Premature postification and text skimming error. ^_^
TDD
I seem to remember the Soviets actually tried that from a manned space craft. It wasn't very successful as I recall.
I suppose if your satellite was a one shot and die thing it might work but a rocket is a lot more practical.
The magazine is below the turret and only enough powder to load the guns are actully in the turret at one time. However that still means there could be several thousand pounds of powder in the turret.
There seemed to be two theories as to the cause of the explosion. Sabatoge by someone putting something in the powder. Another is what is called over ramming the charge.
Harry:
"This is the reason why depleted uranium is used in projectiles."
I wondered about that, too, and now it makes sense from an air resistance point of view. Instead of making the projectile bigger to have more mass, just make the projectile out of a denser material.
Oren: Thanks for sharing that link to those pictures with us.
What surprises me is that no one working behind that gun is wearing any hearing protection! I would have expected that anyone not wearing hearing protection in the turret when a gun like that fires would blow out their ear drums and lose 100% of their hearing instantaneously and permanently. I kinda doubt they took off their hearing protection just to take those pictures. Or, maybe it's not actually all that loud in there?
Those two big cylinders on the top of the breach... Are they like giant shock absorbers? When I've seen movies and TV shows showing modern cannons behing fired, something jerks back and then more slowly slides forward again (if I recall correctly) after each firing. I always presumed the whole idea behind that is to use a shock absorber to reduce the peak stress the steel holding that cannon together and in place has to bear. Kinda like the rubber shoulder pad at the butt end of a rifle; allowing the barrel to move backward as the bullet shoots forward might sacrifice a bit of muzzle velocity, but it makes holding the butt end of the rifle against your shoulder "bearable" when you pull the trigger.
-snip-
It is kind of like the recent rockets from Gaza-- Militarily, not so significant-- but the Palestinians called them a victory because of their longer range. more of Israel needs to be aware of them, now.
Jim
It's too bad that Palestinians don't understand that the rocket attacks hurt them and their quest for nationhood more than they hurt Israel.
Still, the German V1 and V2 rockets had a significant psychological effect on the British during WWII, although many historians say it only strengthened their resolve to fight back. If the German atomic research had come to fruition, the V2's lack of pinpoint accuracy wouldn't have been much of an issue.
I've often wondered how effective the Israeli blockade has been because it hasn't seemed to stop the flow of Iranian-made weapons into the Gaza Strip. Based on what's happening now, I don't see a good future for anyone in that part of the world. It would be ironic if the cradle of civilization turned out to be its grave, too. I fear that once the US has mostly withdrawn from the area, Islamic terrorist will re-focus their attacks on Israel.
I've always though Israel should have been carved out of Germany after WWII as a perpetual reminder of the cost of genocide both to the perpetrators and the victims.
-- Bobby G.
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