OK, for you tank trivia guys. What production tank (or prototype) carried the first bore evacuator? I don't know the answer to this yet, but I'm pretty sure no WWII tanks carried a bore evacuator. However, they were in use on the M-60 ta...
http://www.armchairgeneral.com/forums/showthread.php?t=...
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While the combustible case is thoroughly consumed during firing, further assurance of a clean tube and chamber for each successive round is provided by a cannon bore evacuator. The evacuator functions as a large vacuum device, sweeping all portions of the barrel interior free of the most minute particles.
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www.globalsecurity.org/military/systems/munitions/120.h...
www.globalsecurity.org/military/systems/munitions/120.htm
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bore evacuator ( ′bör i′vakyə′wādər ) ( ordnance ) A device placed on the tube of artillery weapons to force propellant gases to flow outward through ... Sci-Tech Dictionary: bore evacuator...
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www.answers.com/topic/bore-evacuator
www.answers.com/topic/bore-evacuator
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Projectile base pressure measurements were taken in a 155-mm M284 gun tube using an Armament Research, Development and Engineering Center-designed ...
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www.stormingmedia.us/02/0268/A026824.html
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Since the beginning of M256 cannon development, detailed information on the performance of the bore evacuator for different ammunition types or under various levels of degraded function has not been developed. ... The M256 bore evacuator is a pressure vessel which is charged with high pressure gas during firing of the cannon.
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www.stormingmedia.us/65/6509/A650932.html
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Complete Patent Searching Database and Patent Data Analytics Services. ... US Patent References:; Air-cooled gun; - - 2427374; Bore evacuator for gun barrels; - - 2807986; Gas operated firearm with a movable gas cylinder functioning as an inertia member; - - 3024706; Compensating device for gas operated firearms;
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www.freepatentsonline.com/3122055.html
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United States Patent 2807986 ... US Patent References:; /0790664.html; - - 0790664; Cooling means for rapid firing guns; - - 2376321; Gun barrel cooling means; - - 2641162; ... Howard, Wellington R. Matson, Herman P.
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www.freepatentsonline.com/2807986.html
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We observe that at first launch of the day, e.g., after the bore evacuator reservoir is removed and resealed, peak reservoir pressures can double. ... We first cite further field test data for the 120 mm M256 evacuator. Then, using equilibrium thermochemistry, we perform shock tube analyses that predict lot round ignition...
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stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=...
stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADP009064
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The flow-rate of the propellant gases from the gun tube through the bore evacuator holes controls the cannister charging process and determines the maximum pressure available for tube evacuation. In an attempt to model this complex flow in simple mathematical terms the holes are often treated as orifices.
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stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=...
stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADP009060
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