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DOW
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Posted: 7/4/2005 6:33:23 PM

THE IMAGE ABOVE IS A PAID ADVERTISEMENT
I've always wondered.
Marines know how to use their bayonets. Army bayonets may as well be paper-weights. [Navy Times; November 1994]

82ndAbn
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Posted: 7/4/2005 6:40:21 PM
Bore evacuators are ejector pumps mounted on cannon to remove propellant gases from the barrel after firing. The bore evacuator contains a reservoir which is charged by high pressure propellant gas during the projectile's transit down the gun bore. After the projectile exits the muzzle, the pressure in the bore decreases to nearly ambient. The high pressure gas in the reservoir then flows through angled ejector nozzles, inducing a flow through the breech end of the gun and clearing the bore. It is highly desirable to improve the effectiveness of the gun bore evacuator. Increased evacuator pumping action will result in reduced flareback potential and greater crew safety.




www.eng.rpi.edu/mane/lightcraft/Research/BoreEvacuator/bedescription.html

I'm the 82nd Airborne and this is as far as the bastards are going!
DOW
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Posted: 7/4/2005 6:46:26 PM
So it's simply a reservoir which fills with gases and expels them towards the muzzle, pushing all remaining gases/particles out of the bore, and it is not powered by anything. Is that right?
Marines know how to use their bayonets. Army bayonets may as well be paper-weights. [Navy Times; November 1994]

82ndAbn
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Posted: 7/4/2005 6:50:43 PM

Originally Posted By DOW:
So it's simply a reservoir which fills with gases and expels them towards the muzzle, pushing all remaining gases/particles out of the bore, and it is not powered by anything. Is that right?



Pretty much, yes.
I'm the 82nd Airborne and this is as far as the bastards are going!
BallisticTip
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Posted: 7/4/2005 6:53:05 PM
Good info, always wandered what that was on the barrel.
"They're telling us they'd rather die than come out and surrender....so.. They're gonna die..."
enemy
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Posted: 7/4/2005 7:11:00 PM
Learn something every day. [
astro
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Posted: 7/4/2005 8:21:03 PM
I always thought that thingy was a sleeve that you could use to pick the barrel up with and not burn your hand.
All bleeding stops, eventually.
82ndAbn
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Posted: 7/4/2005 8:23:15 PM

Originally Posted By astro:
I always thought that thingy was a sleeve that you could use to pick the barrel up with and not burn your hand.



It's multipurpose.
I'm the 82nd Airborne and this is as far as the bastards are going!
Thunderchild
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Posted: 7/4/2005 8:23:51 PM
I wish I had a Bore Evacuator at the party I went to last night.

TC

Manic_Moran
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Posted: 7/4/2005 8:35:33 PM
Thermal Sleeves and Bore Evacuators are of course entirely different things.

Just to confuse matters, some people call bore evacuators fume extractors. Other tanks don't use them at all, and rely on compressed air.

NTM
geish
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Posted: 7/4/2005 8:39:03 PM
I have always wondered wha those things were. I thought it was some type of guidance system. LOL. Thanks.
astro
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Posted: 7/4/2005 8:48:24 PM

Originally Posted By Manic_Moran:
Thermal Sleeves and Bore Evacuators are of course entirely different things.

Just to confuse matters, some people call bore evacuators fume extractors. Other tanks don't use them at all, and rely on compressed air.

NTM



I was playing stupid, something I do quite convincingly I might add.
All bleeding stops, eventually.
fxntime
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Posted: 7/4/2005 8:50:13 PM
It's like an M-4 BBL in reverse, you can mount a m203 under it for indirect fire.
Manic_Moran
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Posted: 7/5/2005 1:06:54 AM
Don't feel bad. I help give tours at the Littlefield's tank musem on occasion, and it's almost invariably a question that is asked there as well.

NTM
82ndAbn
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Posted: 7/5/2005 1:10:44 AM

Originally Posted By astro:

Originally Posted By Manic_Moran:
Thermal Sleeves and Bore Evacuators are of course entirely different things.

Just to confuse matters, some people call bore evacuators fume extractors. Other tanks don't use them at all, and rely on compressed air.

NTM



I was playing stupid, something I do quite convincingly I might add.



Manic_Moran lost his sense of humor gene some time ago.
I'm the 82nd Airborne and this is as far as the bastards are going!
Manic_Moran
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Posted: 7/5/2005 2:24:26 AM
Call it cultural non-assimilation!

NTM