Patents Assigned to The United States of America as represented by the Scretary of the Navy
  • Patent number: 10210669
    Abstract: A system and method provide for rapid generation of 3D models of complex environments by using a coordinate measurement machine to scan an environment having one or more objects to generate a point cloud comprising a plurality of points, analyzing the points without creating surfaces using the points to determine boundaries of the environment and boundaries of the object within the environment, excising a region of points within the point cloud representing the object, where the excised region of points is determined using the boundaries of the environment and the boundaries of the object, and creating a modified point cloud by replacing the excised region of points with a digital object from a digital object library.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: February 19, 2019
    Assignee: The United States of America as represented by the Scretary of the Navy
    Inventor: Stephen C. Cox
  • Patent number: 9880259
    Abstract: A method for estimating the position of a mobile station (MS) comprising the following steps: physically moving the MS at a constant velocity v in an environment comprising S stationary scatterers; wirelessly transmitting N uplink communication signals from a transmitter physically mounted to the MS; receiving each of the N uplink signals via D distinct paths at a fixed-location base station (BS); recording with the BS a time of arrival (TOA) ?, an angle-of-arrival (AOA) ?, and a Doppler-shifted frequency (DSF) of each received uplink signal; estimating the location of the MS using a least squares algorithm based on the TOA, the AOA, and the DSF.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: January 30, 2018
    Assignee: The United States of America as represented by Scretary of the Navy
    Inventor: Rohan Yash Ramlall
  • Patent number: 9423228
    Abstract: A fragmentation structure is provided with improved performance e.g., fragmentation, projectile generation, storage, and manufacturing. An embodiment can include an open fragmentation structure that can be separated into individual components that can include a structure body section with a compartment, a removable initiator or detonator, a top cap section having an aperture configured to accept the removable initiator or removable detonator, and an explosive. An exemplary explosive can be preassembled to fit within the structure without a need for pouring in an explosive. An exemplary structure or top cap of the structure can receive an embrittlement treatment increasing its fragmentation characteristics. An ability of the structure to be easily disassembled allows for safer storage and a longer shelf life. A design of an exemplary embodiment of the structure allows it to be used with a wide range of explosive materials in addition to many types of removable initiators or detonators.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: August 23, 2016
    Assignee: The United States of America as represented by the Scretary of the Navy
    Inventors: Brad Moan, Eric Scheid, Lucas Allison, Nishkamraj Deshpande
  • Patent number: 8520471
    Abstract: A forward and aft open-ended, towed underwater acoustic source having a hollow with a plurality of wires disposed in parallel across one or both of the end openings. In operation, water flows around the wires and proceeds through the hollow body, exiting the aft open end of the body. The tensioned wires are situated normal to the direction of flow in order to cause production of Strouhal vibration frequencies due to the vortex shedding action of the water flow behind the wires. The source transmits broadband acoustic energy without requiring heavy transducers.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: August 27, 2013
    Assignee: The United States of America as represented by the Scretary of the Navy
    Inventor: Anthony A. Ruffa
  • Patent number: 8300501
    Abstract: A system for three-dimensional tracking of high speed undersea projectiles may utilize a distributed field of randomly positioned passive acoustic sensors. The system measures variables related to the pressure field generated by a supercavitating projectile in flight wherein the amplitude of the pressure generated at a point in space is related to the projectile dimensions, velocity, and trajectory. The system iteratively processes data from the sensors to measure launch velocity, flight direction (trajectory), ballistic coefficient (drag), and/or maximum range.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: October 30, 2012
    Assignee: The United States of America as represented by the Scretary of the Navy
    Inventors: Abraham N. Varghese, Robert Kuklinski, Thomas J. Gieseke
  • Patent number: 4315169
    Abstract: A staircase electrode-wall configuration for a MHD generator which uses fd dynamic means to protect the electrodes from substantial damage due to arcing and chemical attack. The electrode walls of a MHD generator duct have periodic conductor/insulator elements where channel divergence or convergence is accomplished in a stepwise fashion. The electrode is situated within the insulator of each element to be backward-facing so as not to be directly exposed to the hot gas flow. The turbulence which exists at the backward-facing electrode moves the arc spot about the surface to prevent severe local damage. Chemical attack is inhibited by a laminated electrode surface of a low corrosive material and the turbulence which aids in cooling the electrode face. Additional cooling may be obtained by a purge jet at the electrode face.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: February 9, 1982
    Assignee: The United States of America as represented by the Scretary of the Navy
    Inventor: Oscar Biblarz