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| Number | Title | Issue Date |
| 8151711 | 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 ... | 04/10/2012 |
| 8151710 | Surface ship, deck-launched anti-torpedo projectile A surface ship, deck-launched anti-torpedo projectile is disclosed. The projectile has a blunt-end nose to create a cavitating running mode. The nose has a gradual, stepped, right-circular cylindrical or conic geometry. In some embodiments, the projectile includes a... | 04/10/2012 |
| 8146501 | 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. ... | 04/03/2012 |
| 8082847 | Cavity-enhancing features and methods for a cavity-running projectile A cavity-enhancing feature and method are disclosed for a projectile that is capable of operating underwater in a cavity-running mode. ... | 12/27/2011 |
| 8015922 | Control system for right circular cylinder bodies 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 m... | 09/13/2011 |
| 8006619 | Underwater acoustic tracer system An underwater supercavitating projectile includes means to form ripples on its surrounding cavity so as to provide well-defined disturbances of the cavity boundary. As the ripples move aft of the supercavitating projectile and into the wake behind the advancing proj... | 08/30/2011 |
| 7975614 | Acoustic shotgun system A high velocity acoustic signal producing underwater shotgun system for dispersing a plurality of relatively small supercavitating projectiles over a wide spatial field at long range using the dynamics of cavity collapse for better target localization in underwater ... | 07/12/2011 |
| 7966936 | Telescoping cavitator A high speed underwater projectile configuration that includes a cylindrical telescoping cavitator design capable of providing projectile nose shape change where such change to the projectile nose tip geometry results in supercavitation and a concomitant vaporous ca... | 06/28/2011 |
| 7895948 | Buoyancy dissipater and method to deter an errant vessel Embodiments of a buoyancy dissipater and method for deterring an errant vessel are generally described herein. In some embodiments, a volume of gas is generated from a propellant and diffused below a waterline of a vessel. The resulting gas bubble dissipates the buo... | 03/01/2011 |
| 7874251 | Cavity-running projectile having a telescoping nose A projectile having a cavity-running mode is provided with a mechanism for changing the diameter of its nose. Based on changed conditions, the diameter of the nose can be actively reduced or increased, as required, to maintain a desired value for the nose-to-body ra... | 01/25/2011 |
| 7836827 | Method of operating a supercavitating projectile based on time constraints A method for operating a thrust-generating supercavitating projectile involves launching the projectile in water from rest at the maximum available thrust, maintaining that thrust until supercavitating movement begins, and then reducing thrust to a near-minimum amou... | 11/23/2010 |
| 7832336 | Method of operating a supercavitating projectile based on velocity constraints A method for operating a thrust-generating supercavitating projectile involves launching the projectile at a velocity above the minimum required to maintain supercavitating movement, delaying initiation of thrust until the projectile slows to a velocity that is near... | 11/16/2010 |
| 7779759 | Supercavitating water-entry projectile A water-entry projectile capable of supercavitation and spin-stabilization comprises a forward section having one or more forward stepped sections, each stepped section being symmetrical in rotation about an axis and having a radius at an aft end that is different f... | 08/24/2010 |
| 7730838 | Buoyancy dissipater and method to deter an errant vessel Embodiments of a buoyancy dissipater and method for deterring a vessel are generally described herein. In some embodiments, a volume of gas is generated from a propellant and diffused below a waterline of a vessel. The resulting gas bubble dissipates the buoyancy of... | 06/08/2010 |
| 7690309 | Supercavitating vehicle control A control system for a supercavitating vehicle includes a set of winglets for rapid maneuverability and a segmented ring wing for fine stabilization control. The winglets and ring wing extend from an aft portion of the vehicle. The winglets are supported by a strut ... | 04/06/2010 |
| 7428870 | Apparatus for changing the attack angle of a cavitator on a supercavatating underwater research model An apparatus for changing the angle of attack of a cavitator on a supercavitating underwater research model. The apparatus has a nose assembly that has a pivotable cavitator tilt plate, an actuator member and a drive system engaged with the actuator member to drive ... | 09/30/2008 |
| 7392733 | High resolution projectile based targeting system A projectile based targeting system for underwater objects includes a trainable gun terminal mounted in a waterproof housing. The gun terminal includes plural gun barrels terminating in waterproof breeches. Noise generating projectiles are launched from the gun barr... | 07/01/2008 |
| 7373883 | Projectile with tail-mounted gas generator assembly A projectile is provided that includes a body having a front tip portion and a rear end portion. A combustion chamber base plate is operatively arranged with the rear end portion of the body and defines a combustion chamber. At least one radial discharge aperture is... | 05/20/2008 |
| 7363862 | Multi-purpose single initiated tandem warhead A multi-purpose tandem warhead needing only a single initiation has a casing that forms front, middle and rear portions. A shaped charge is positioned in the rear portion of the casing and a fragmentation charge is positioned in the front portion of the casing. The ... | 04/29/2008 |
| 7347146 | Supercavitating projectile with propulsion and ventilation jet A supercavitating projectile is disclosed and includes a combustion chamber, a forward-directed jet nozzle and a comparatively larger gas duct/rear-directed jet nozzle. The combustion chamber is filled with a propellant having a hollowed core. The core serves as a p... | 03/25/2008 |
| 6962121 | Boiling heat transfer torpedo A system has a source of gas venting gas at a nose portion of the vehicle to create a gas/vapor cavity on the nose portion and an adjacent hull of the vehicle. A thermal engine propelling the vehicle through ambient water creates waste heat for heating the hull to r... | 11/08/2005 |
| 6951179 | Boiling heat transfer surface A system to create and maintain a gas/vapor cavity about a hull surface includes a fence selectively extendable above and below the hull surface. A gas venting means is positioned beneath the hull surface downstream from the fence. The vented gas can be used to crea... | 10/04/2005 |
| 6923105 | Gun-armed countermeasure A device for countermeasuring an underwater target is provided. The device generally comprises a module having inflatable buoyancy chambers that allow the module to hover at a desired water depth, at least one acoustic array to detect the underwater target, a propul... | 08/02/2005 |
| 6920827 | Vehicle-borne system and method for countering an incoming threat A vehicle-borne system for countering an incoming threat, the system including a sensing device configured to sense an incoming threat, and an active protection system including a maneuverable interceptor incorporating a plurality of kinetic energy rods and an aimab... | 07/26/2005 |
| 6802260 | Safety and arming device using cellulose-based sensor/actuator A safety and arming device has first and second portions of an explosive train fixably supported in a housing. A third portion of the explosive train is fixable in a first position such that the first and second portions remain operably separated from one another, a... | 10/12/2004 |
| 6739266 | High-speed supercavitating underwater vehicle A high-speed supercavitating underwater vehicle includes an elongated hull of circular cross section, the hull having a cavitator at a forward end thereof and means for ventilating gas to form a cavity around the hull in underwater travel. An expandable annular skir... | 05/25/2004 |
| 6601517 | Super-cavitating penetrator warhead The present invention comprises a warhead for penetrating hardened or buried targets. In general, the invention comprises a warhead for penetrating hardened or buried targets comprising a warhead that employs a super-cavitating nose along with a cellular ... | 08/05/2003 |
| 6584924 | Apparatus for controlling pressure recovery An apparatus for controlling fluid pressure recovery includes an elongated housing having an opening at a first end thereof, an opening at a second end thereof, an inner peripheral surface, and a fluid flow passageway therethrough. The apparatus further i... | 07/01/2003 |
| 6530325 | Method of scrapping steel structures A method of breaking up a structure for the recovery of steel as scrap. The structure has steel plates forming a compartment secured to framing in the compartment. The method includes at least partially filling the compartment with a substantially incompr... | 03/11/2003 |
| 6415211 | Weapon and launcher test set (WALT) A portable data acquisition system for use in certifying torpedo tube-launched weapons such as a Mark 48/ADCAP, a Tomahawk missile or a Harpoon and the like. The system includes a portable computer, a rugged four slot chassis, a 32 channel multiplexing mo... | 07/02/2002 |
| 6405653 | Supercavitating underwater projectile A supercavitating underwater projectile adapted to be fired from a gun or the like, comprising a front end or nose portion and a rear end portion. An auxiliary rocket motor is disposed within the rear end portion of the projectile for providing additional... | 06/18/2002 |
| 6401591 | Neutralization chemical injection penetrator The present invention comprises a device for clearing mines comprising a housing assembly with a chamber therein that carries a surface contact chemical that is capable of consuming the explosive fill within a mine. A nose assembly is attached to the hous... | 06/11/2002 |
| 6388184 | Deployable nose for an underwater vehicle A deployable nose is used on an underwater vehicle to provide a shorter length when in a retracted position and to provide a reduced drag when in the deployed position. The deployable nose includes a plurality of nose sections and a deployment mechanism t... | 05/14/2002 |
| 6376762 | Small vehicle launch platform A launch platform for a host vehicle. There is a cradle having a cylindrical shape with peripheral axial recesses formed therein and arranged around the cradle. A release mechanism is positioned within the cradle. The release mechanism releasably joins sm... | 04/23/2002 |
| 6131517 | Method and apparatus for removing abandoned offshore fixed platforms A method and apparatus for removing abandoned or obsolete fixed platforms in a marine environment is provided. The apparatus includes a frame carrying an explosive charge. The frame includes a linear and a curved section which are adjustable moved relativ... | 10/17/2000 |
| 6044745 | Seabed enclosures The disclosure relates to an enclosure for weaponry, listening, identifying, recording, communications equipment or the like for use in or on the seabed. The enclosure comprises an outer cylindrical container (10) having a buoyancy chamber (34) to render ... | 04/04/2000 |
| 5955698 | Air-launched supercavitating water-entry projectile A supercavitating water-entry projectile having empennage on the aft end ch provides both aerodynamic and hydrodynamic stability and a supercavitating nose section is provided. A representative projectile is a subcaliber munition adapted for use in a 25 ... | 09/21/1999 |
| 5929370 | Aerodynamically stabilized projectile system for use against underwater objects A projectile is propelled from a location in air, through an air/water interface, and toward a submerged underwater object. The projectile includes a forward end that forms a cavitation void around the projectile in water, avoiding water drag on the remai... | 07/27/1999 |
| 5690091 | Speargun projectile assembly A projectile assembly for use in a breech loading hydraulic speargun. The assembly consists of a dart connected to a plug end. The assembly is inserted into the breech end of the speargun barrel with the plug end sealing the breech end of the barrel. A tr... | 11/25/1997 |
| 5690090 | Lanyard retainer for a speargun projectile A lanyard retainer for use in a breech loading hydraulic speargun. A projectile is attached to the retainer and the retainer and projectile are inserted into the breech end of the speargun barrel with the retainer sealing the breech end of the barrel. A t... | 11/25/1997 |
