DEPLOYABLE BOAT-TAIL DEVICE FOR USE ON PROJECTILES
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United States of America Patent
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N/A
Issued Date -
Feb 3, 2011
app pub date -
Aug 2, 2010
filing date -
Jul 31, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In accordance with one aspect of the invention, a system, method and apparatus for a boat-tail device is described herein. A body section for a projectile having a deployable portion is provided. Gun gases may pass through an orifice at an aft end of a piston and pressurize a volume in a plenum within the body section. Depressurization at muzzle exit may allow the gas pressurized in the plenum to push the piston aft deploying the deployable portion. A stopping and locking mechanism such as a complementarily tapered piston and opening may engage at the end of the stroke of the piston to stop and lock the piston at a predetermined location. A releasable protective cover may be used to protect the structure of the deployable element and other elements from gun gases and launch loads.
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