Patents by Inventor David L. Hunn
David L. Hunn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8276497Abstract: A blast attenuator includes an enclosure defining a cavity; a core defining a plurality of interconnected pores, the core disposed in the cavity; and a shear thickening fluid disposed in the cavity, such that the shear thickening fills a portion of a pore volume of the core. A blast attenuation assembly includes a blast attenuator including a shear thickening fluid and a crushable element that omits a shear thickening fluid operably associated with the blast attenuator. A method includes the steps of providing a rigid core defining a plurality of interconnected pores and placing an enclosure about the core, the enclosure defining a filling port. The method further includes the steps of filling at least a portion of a pore volume of the core with a shear thickening fluid and closing the filling port to seal the enclosure and form a first blast attenuator.Type: GrantFiled: March 9, 2006Date of Patent: October 2, 2012Assignee: Lockheed Martin CorporationInventor: David L. Hunn
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Publication number: 20120234163Abstract: An armor includes a metallic matrix; a plurality of ceramic rods disposed in the metallic matrix, the plurality of ceramic rods and the metallic matrix forming a core; and a spall liner disposed adjacent a rear face of the core. The metallic matrix places a compressive stress on the plurality of ceramic rods. A method for making an armor includes the steps of providing a plurality of ceramic rods in a desired configuration and embedding the plurality of ceramic rods in a metallic matrix to form a core, such that the metallic matrix provides a compressive stress to the plurality of ceramic rods. The method further includes providing a spall liner and disposing the spall liner adjacent a rear surface of the core to form an armor.Type: ApplicationFiled: April 17, 2008Publication date: September 20, 2012Applicant: LOCKHEED MARTIN CORPORATIONInventor: David L. Hunn
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Publication number: 20120180627Abstract: A blast attenuator includes an enclosure defining a cavity; a core defining a plurality of interconnected pores, the core disposed in the cavity; and a shear thickening fluid disposed in the cavity, such that the shear thickening fills a portion of a pore volume of the core. A blast attenuation assembly includes a blast attenuator including a shear thickening fluid and a crushable element that omits a shear thickening fluid operably associated with the blast attenuator. A method includes the steps of providing a rigid core defining a plurality of interconnected pores and placing an enclosure about the core, the enclosure defining a filling port. The method further includes the steps of filling at least a portion of a pore volume of the core with a shear thickening fluid and closing the filling port to seal the enclosure and form a first blast attenuator.Type: ApplicationFiled: March 9, 2006Publication date: July 19, 2012Inventor: David L. Hunn
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Publication number: 20120180632Abstract: A vehicle hull includes a personnel compartment and an apparatus for inhibiting effects of an explosive blast operably associated with the personnel compartment. The apparatus is configured to redirect at least a portion of a blast wave resulting from an explosive blast. The apparatus defines a cavity in which a blast attenuator is disposed. The blast attenuator comprises a core defining a plurality of interconnecting pores defining a pore volume of the core, a shear thickening fluid disposed in the pore volume of the core, and an enclosure in which the core and the shear thickening fluid are disposed.Type: ApplicationFiled: December 12, 2009Publication date: July 19, 2012Applicant: LOCKHEED MARTIN CORPORATIONInventors: David L. Hunn, Sang J. Lee, James C. Copp
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Publication number: 20120132064Abstract: An armor includes a core that, in turn, includes a first layer of prismatic elements arranged in a tessellated fashion and a second layer of prismatic elements arranged in a tessellated fashion. The first layer of prismatic elements is nested into the second layer of prismatic elements. An armor includes a strike face sheet, a rear face sheet, and a core disposed between the strike face sheet and the rear face sheet. The core includes a first layer of prismatic elements arranged in a tessellated fashion, a second layer of prismatic elements arranged in a tessellated fashion, and a strain isolation layer. The first layer of prismatic elements is nested into the second layer of prismatic elements with the strain isolation layer disposed between the first layer of prismatic elements and the second layer of prismatic elements.Type: ApplicationFiled: November 10, 2009Publication date: May 31, 2012Applicant: Lockheed Martin CorporationInventors: David L. Hunn, Kenneth W. Havens, Sang J. Lee
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Publication number: 20120125187Abstract: An armor includes a core that, in turn, includes a first layer of prismatic elements arranged in a tessellated fashion and a second layer of prismatic elements arranged in a tessellated fashion. The armor further includes a smart component operably associated with a component of the armor. The first layer of prismatic elements is nested into the second layer of prismatic elements.Type: ApplicationFiled: November 10, 2009Publication date: May 24, 2012Applicant: Lockheed Martin CorporationInventor: David L. Hunn
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Publication number: 20110113950Abstract: A composite material suitable for use as an armor includes a first layer of a metallic material and a second layer, metallurgically bonded with the first layer. The second layer includes a matrix of the material of the first layer and a plurality of brittle particles dispersed in the matrix. A method for making a composite structure suitable for use as an armor from a workpiece of a metallic material includes the steps of plasticizing a fractional thickness of the workpiece using a friction stir process, introducing a plurality of brittle particles into the plasticized, fractional thickness of the workpiece, and dispersing the plurality of brittle particles into the plasticized, fractional thickness of the workpiece using the friction stir process.Type: ApplicationFiled: January 10, 2006Publication date: May 19, 2011Inventors: Charles K. Reed, David L. Hunn, Michael L. Fortner
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Patent number: 7657134Abstract: An impact-sensing, thermal insulation system includes a light source; an optical detector; and an optically-transmissive insulation optically coupled with the light source and the optical detector, the optically-transmissive insulation being operably associated with an outer surface of a pressure vessel. A missile includes a body; a propulsion system including a pressure vessel having an outer surface; and an impact-sensing, thermal insulation system operably associated with the outer surface of the pressure vessel. The impact-sensing, thermal insulation system includes a light source; an optical detector; and an optically-transmissive insulation optically coupled with the light source and the optical detector, the optically-transmissive insulation being operably associated with the outer surface of the pressure vessel.Type: GrantFiled: July 14, 2008Date of Patent: February 2, 2010Assignee: Lockheed Martin CorporationInventor: David L. Hunn
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Patent number: 7631589Abstract: An apparatus for inhibiting effects of an explosive blast includes a central portion including a stiffening element and defining a radiused exterior surface and a plurality of sides extending from the central portion for attachment to a structure. The central portion and the plurality of sides are configured to redirect at least a portion of a blast wave resulting from an explosive blast. A vehicle hull includes a personnel compartment and an apparatus for inhibiting effects of an explosive blast operably associated with the personnel compartment. The apparatus includes a central portion including a stiffening element and defining a radiused exterior surface and a plurality of sides extending between the central portion and the personnel compartment. The central portion and the plurality of sides are configured to redirect at least a portion of a blast wave resulting from an explosive blast.Type: GrantFiled: May 1, 2006Date of Patent: December 15, 2009Assignee: Lockheed Martin CorporationInventors: David L. Hunn, Sang J. Lee, James C. Copp
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Publication number: 20090272254Abstract: An apparatus for inhibiting effects of an explosive blast includes a central portion including a stiffening element and defining a radiused exterior surface and a plurality of sides extending from the central portion for attachment to a structure. The central portion and the plurality of sides are configured to redirect at least a portion of a blast wave resulting from an explosive blast. A vehicle hull includes a personnel compartment and an apparatus for inhibiting effects of an explosive blast operably associated with the personnel compartment. The apparatus includes a central portion including a stiffening element and defining a radiused exterior surface and a plurality of sides extending between the central portion and the personnel compartment. The central portion and the plurality of sides are configured to redirect at least a portion of a blast wave resulting from an explosive blast.Type: ApplicationFiled: May 1, 2006Publication date: November 5, 2009Inventors: David L. Hunn, Sang J. Lee, James C. Copp
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Patent number: 7546796Abstract: An armor includes a face sheet, a spall liner, and a core disposed between the face sheet and the spall liner. The core includes a polymeric matrix and a plurality of ceramic rods disposed in the polymeric matrix. The armor further includes a first shock dissipation layer disposed between the face sheet and the core. The armor optionally includes a second shock dissipation layer disposed between the spall liner and the core.Type: GrantFiled: February 3, 2006Date of Patent: June 16, 2009Assignee: Lockheed Martin CorporationInventor: David L. Hunn
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Patent number: 7543523Abstract: An antiballistic armor includes a core having a first surface, a second surface, and pockets extending into the core. The antiballistic armor further includes projectile impeding elements, wherein one of the projectile impeding elements is disposed within each of the pockets of the core. Further, the antiballistic armor includes a first face sheet joined to the first surface of the core and a second face sheet joined to the second surface of the core. A method includes producing pockets in a core that extend into the core, attaching projectile impeding elements within the pockets in the core, joining a first face sheet onto the first surface of the core, and joining a second face sheet onto a second surface of the core.Type: GrantFiled: October 1, 2001Date of Patent: June 9, 2009Assignee: Lockheed Martin CorporationInventor: David L. Hunn
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Publication number: 20090126557Abstract: An armor includes a face sheet, a spall liner, and a core disposed between the face sheet and the spall liner. The core includes a polymeric matrix and a plurality of ceramic rods disposed in the polymeric matrix. The armor further includes a first shock dissipation layer disposed between the face sheet and the core. The armor optionally includes a second shock dissipation layer disposed between the spall liner and the core.Type: ApplicationFiled: February 3, 2006Publication date: May 21, 2009Inventor: David L. Hunn
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Publication number: 20090114082Abstract: An antiballistic armor includes a core having a first surface, a second surface, and pockets extending into the core. The antiballistic armor further includes projectile impeding elements, wherein one of the projectile impeding elements is disposed within each of the pockets of the core. Further, the antiballistic armor includes a first face sheet joined to the first surface of the core and a second face sheet joined to the second surface of the core. A method includes producing pockets in a core that extend into the core, attaching projectile impeding elements within the pockets in the core, joining a first face sheet onto the first surface of the core, and joining a second face sheet onto a second surface of the core.Type: ApplicationFiled: October 1, 2001Publication date: May 7, 2009Inventor: David L. Hunn
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Publication number: 20090087135Abstract: An impact-sensing, thermal insulation system includes a light source; an optical detector; and an optically-transmissive insulation optically coupled with the light source and the optical detector, the optically-transmissive insulation being operably associated with an outer surface of a pressure vessel. A missile includes a body; a propulsion system including a pressure vessel having an outer surface; and an impact-sensing, thermal insulation system operably associated with the outer surface of the pressure vessel. The impact-sensing, thermal insulation system includes a light source; an optical detector; and an optically-transmissive insulation optically coupled with the light source and the optical detector, the optically-transmissive insulation being operably associated with the outer surface of the pressure vessel.Type: ApplicationFiled: July 14, 2008Publication date: April 2, 2009Applicant: LOCKHEED MARTIN CORPORATIONInventor: David L. Hunn
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Patent number: 7484450Abstract: An apparatus for launching a vehicle includes a bag and an inflator in fluid communication with the bag, the inflator configured to generate a gas to inflate the bag. The apparatus is operable to launch the vehicle. A method for launching a vehicle includes the step of providing an apparatus for launching the vehicle, the apparatus comprising a bag and an inflator in fluid communication with the bag. The method further includes the step of activating the inflator, such that a gas flows from the inflator, and the step of inflating the bag with the gas to launch the vehicle.Type: GrantFiled: February 23, 2006Date of Patent: February 3, 2009Assignee: Lockheed Martin CorporationInventors: David L. Hunn, R. Vince Caruth, John S. Buchan
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Publication number: 20090007765Abstract: An apparatus for launching a vehicle includes a bag and an inflator in fluid communication with the bag, the inflator configured to generate a gas to inflate the bag. The apparatus is operable to launch the vehicle. A method for launching a vehicle includes the step of providing an apparatus for launching the vehicle, the apparatus comprising a bag and an inflator in fluid communication with the bag. The method further includes the step of activating the inflator, such that a gas flows from the inflator, and the step of inflating the bag with the gas to launch the vehicle.Type: ApplicationFiled: February 23, 2006Publication date: January 8, 2009Inventors: David L. Hunn, R. Vince Caruth, John S. Buchan
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Patent number: 7387072Abstract: A fluid jet apparatus includes a housing defining a propellant cavity, a fluid cavity, and a passage through the housing in fluid communication with the fluid cavity. The apparatus further includes a membrane separating the propellant cavity and the fluid cavity, a propellant disposed in the propellant cavity, and a fluid retained in the fluid cavity. The propellant urges the fluid from the fluid cavity through the passage upon initiation of the propellant. A munition system includes a munition and at least one fluid jet apparatus adapted to vent the munition. A method includes initiating a propellant to produce a rapidly expanding gas and urging a fluid through a passageway with the gas to produce a fluid jet.Type: GrantFiled: May 13, 2005Date of Patent: June 17, 2008Assignee: Lockheed Martin CorporationInventors: David L. Hunn, Ben T. Milam, Kenneth W. Havens
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Patent number: 7261040Abstract: A penetrator includes a fore body comprising a pin and having a center of aerodynamic pressure forward of a center of gravity and a stabilizing portion comprising a material of lower density than that of the fore body and a plurality of outwardly extending fins for improving an aerodynamic stability of the projectile and defining a bore in which the pin is received for removably attaching the fore body thereto such that, when attached to the fore body, a center of gravity for the penetrator is forward of a center of aerodynamic pressure for the penetrator.Type: GrantFiled: April 26, 2006Date of Patent: August 28, 2007Assignee: Lockheed Martin CorporationInventors: David L. Hunn, Johnny E. Banks, Carlton B. Cowan
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Patent number: 7107910Abstract: A penetrator includes a fore body comprising a pin and having a center of aerodynamic pressure forward of a center of gravity and a stabilizing portion comprising a material of lower density than that of the fore body and a plurality of outwardly extending fins for improving an aerodynamic stability of the projectile and defining a bore in which the pin is received for removably attaching the fore body thereto such that, when attached to the fore body, a center of gravity for the penetrator is forward of a center of aerodynamic pressure for the penetrator.Type: GrantFiled: November 12, 2004Date of Patent: September 19, 2006Assignee: Lockheed Martin Corp.Inventors: David L. Hunn, Johnny E. Banks, Carlton B. Cowan