Patent application number | Description | Published |
20090173248 | Supercavitating Projectile and Operation Thereof - A method for operating a supercavitating projectile is disclosed. | 07-09-2009 |
20090173249 | Supercavitating Projectile and Operation Thereof - A method for operating a supercavitating projectile is disclosed. | 07-09-2009 |
20090320345 | Underwater Gun Comprising a Valve-Type Barrel-Seal - An apparatus and method for sealing the barrel of an underwater gun between firings is disclosed. The apparatus comprises a valve that is moved between a sealing and non-sealing state by a valve-actuator. In some embodiments, the valve actuator is driven by gases that result when a round is fired. | 12-31-2009 |
20100225256 | Simple Pitch Control System for Objects of Right Circular Cylinder Body Geometry - A technique for controlling the pitch of a supercavitating projectile is disclosed. For example, the illustrative embodiment controls the pitch of a supercavitating projectile by shifting its center of gravity. The center of gravity of the projectile is shifted by moving a ferromagnetic mass inside the projectile forward or backward, depending on the desired pitch. In some embodiments of the present invention, the position of the ferromagnetic mass is directed by a controller that has a predetermined trajectory stored in its memory. | 09-09-2010 |
20100251589 | UNDERWATER GUN COMPRISING A TURBINE-BASED BARREL SEAL - An apparatus and method for sealing the barrel of an underwater gun between firings is disclosed. The apparatus comprises a turbine that is disposed at the outlet of the muzzle of the gun. The turbine draws in water and, in various embodiments, either (a) vaporizes it, forming a vapor barrier along the spin axis that keeps water out of the barrel, (b) expels it radially, thereby re-directing it so that it does not enter the barrel, or (c) generates water jets that prevent water from entering the barrel. | 10-07-2010 |
20100281728 | Underwater Gun Comprising a Barrel Adapter including a Barrel Seal - An apparatus and method for sealing the barrel of an underwater gun between firings is disclosed. The apparatus comprises an adapter that attaches to the barrel and includes a physical adaptation that is capable of sealing the barrel. In some embodiments, the physical adaptation is actuated to un-seal the barrel via combustion gases from firing of a round. | 11-11-2010 |
20100281729 | Underwater Gun Comprising a Plate-Type Barrel Seal - An apparatus for sealing the barrel of an underwater gun between firings is disclosed. The apparatus comprises a magnetically-attractable water-impermeable disk. Via operation of a drive system, the disk is movable between a sealing position, wherein it prevents water from entering the barrel by moving into alignment with the first bore, and a firing position, wherein the first water-impermeable disk moves out of alignment with the first bore. | 11-11-2010 |
20100281730 | Underwater Gun Comprising a Passive Fluidic Barrel Seal - An apparatus and method for sealing the barrel of an underwater gun between firings is disclosed. The apparatus clears the barrel and/or prevents water from entering the barrel based on pressure variations. | 11-11-2010 |
20120085257 | SUPERCAVITATING PROJECTILE WITH REDUCED-DRAG CONTROL SURFACES - The illustrative embodiment provides bumpers which are roughly shaped like skis that face towards the air-water boundary of the air cavity. When the projectile fishtails and one or more of the bumpers come into contact with the air-water boundary, the water imparts torque and a rebounding force to push the projectile completely back into the air cavity. Furthermore, because the bumpers are shaped roughly like skis and not like knives, the bumpers do not penetrate the water or create unnecessary water drag. | 04-12-2012 |
20120097061 | SUPERCAVITATING PROJECTILE HAVING A MORPHABLE NOSE - A supercavitating projectile having a nose that is capable of morphing its shape or length for extended operating range is disclosed. | 04-26-2012 |