Patents Assigned to OFFICE OF NAVAL RESEARCH
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Patent number: 10621883Abstract: A method of simulating 3-degrees of freedom spacecraft rotational dynamics is provided that includes attaching a payload, using a spherical air bearing, to an inner gimbal of a 3-axis gimbal, where the 3-axis gimbal includes an outer gimbal, a mid-gimbal and the inner gimbal, using a motion controller to control motion of each the gimbal of the 3-axis gimbal, where the motion controller includes an appropriately programmed computer and a motion control motor, sensing limits of free travel of the spherical air bearing, using a position sensor, and changing a position of the 3-axis gimbal away from the limit of free travel of the spherical air bearing when the spherical air bearing approaches the limit of free travel, wherein the position change effects travel of the spherical bearing to be unbounded by the limit of free travel, wherein 4? steradians spacecraft dynamics of the payload are simulated.Type: GrantFiled: July 28, 2014Date of Patent: April 14, 2020Assignees: The Regents of the University of California, The United States Government as represented by the Secretary of the Navy, Office of Naval ResearchInventors: Simone Chesi, Marcello Romano
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Patent number: 9884788Abstract: The present invention relates to a method of producing ultra-high melting point nonoxide ceramics with low porosity based on sintering at low temperatures of below about 1000° C. with low DC electric fields of less than about 100 V/cm.Type: GrantFiled: February 2, 2015Date of Patent: February 6, 2018Assignees: RUTGERS, THE STATE UNIVERSITY OF NEW JERSEY, OFFICE OF NAVAL RESEARCHInventors: Thomas Tsakalakos, Enver K. Akdogan, Ilyas Savkliyildiz, Hulya Bicer, Lawrence Kabacoff, Bart Visser, William Paxton
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Publication number: 20120070790Abstract: The detonation propagation in a channel geometry which suppresses detonation propagation in one direction, allows it in another direction, and does not create flow restrictions in the channel. The geometry consists of a series of divergent sections separated by wedges that form a sawtooth shape. The detonation fails to propagate through this geometry in one direction because the detonation front is weakened by diffraction, and reignition centers are isolated from the main channel. In an opposite direction, convergent parts of the geometry support the detonation propagation, because subsequent shock collisions with oblique walls that form convergent sections create powerful transverse waves. These powerful transverse waves help the detonation propagation or reignite it.Type: ApplicationFiled: September 22, 2011Publication date: March 22, 2012Applicant: US Gov't Represented by the Secretary of the Navy Office of Naval Research (ONR/NRL) Code OOCCIPInventors: Vadim N. Gamezo, Elaine S. Oran
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Publication number: 20120015401Abstract: The subject invention provides novel Plasmodium falciparum antigens and novel polynucleotides encoding these antigens. Also provided by the subject invention are methods of using these antigens and polynucleotides.Type: ApplicationFiled: July 25, 2011Publication date: January 19, 2012Applicants: U.S.A as Represented by the Secretary of the Navy, Office of Naval Research (Code 00CC), Epimmune Inc.Inventors: Alessandro Sette, Denise L. Doolan, Daniel J. Carucci, John Sidney, Scott Southwood
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Publication number: 20110222048Abstract: Obtaining global tropospheric vertical wind profiles by directly detecting atmospheric winds using space borne, airborne and/or ground station platforms is accomplished by a DASH interferometer in the back-end of a Doppler wind LIDAR. In the front-end of the Doppler wind LIDAR, a laser illuminates an atmosphere and a telescope collects backscattered laser light return signals from the laser illuminated atmosphere. The DASH interferometer processes return signals from the atmosphere, forming an interferogram and determines from the interferogram a Doppler shift of the return signals, which is equivalent to determining the line of sight wind speed of the Doppler wind LIDAR observation, by measuring the frequency shift caused by winds.Type: ApplicationFiled: September 7, 2010Publication date: September 15, 2011Applicant: US Gov't Represented by the Secretary of the Navy Office of Naval Research (ONR/NRL) Code OOCCIPInventors: Christoph R. Englert, David E. Siskind
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Publication number: 20100290487Abstract: A method and a system are implemented in the fabrication of a portable high power terahertz beam source that can produce a tunable, high power terahertz beam over the frequency from 0.1 THz to 2.5 THz. The terahertz source employs a recycling pump beam method and a beam quality control device. The beam quality control device may or may not be required for a high power terahertz beam generation. In exemplary embodiments, a lithium niobate (LiNbO3) crystal or a lithium niobate crystal doped with 5% magnesium oxide (LiNbO3:MgO) can be used. Other nonlinear optical crystals, including GaSe can be used in place of the LiNbO3 crystal. Through proper alignment of a pump beam, along with recycling a pump beam, high conversion efficiency is achieved, and a high output power beam is produced at terahertz frequencies.Type: ApplicationFiled: February 23, 2010Publication date: November 18, 2010Applicant: US Gov't Represented by the Secretary of the Navy Office of Naval Research (ONR/NRL) Code OOCCIPInventor: Dong Ho Wu
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Publication number: 20100264502Abstract: Gray tone lithography is used to form curved silicon topographies for semiconductor based solid-state imaging devices. The imagers are curved to a specific curvature and shaped directly for the specific application; such as curved focal planes. The curvature of the backside is independent from the front surface, which allows thinning of the detector using standard semiconductor processing.Type: ApplicationFiled: October 19, 2009Publication date: October 21, 2010Applicant: US Gov't Represented by the Secretary of the Navy Office of Naval Research (ONR/NRL) code OOCCIPInventors: Marc Christophersen, Bernard F. Phlips
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Publication number: 20100264904Abstract: An apparatus, for measuring an applied electrical field and for reducing perturbation to the electrical field being measured, includes a laser integrated into an electro optic crystal sensor head prior to the output fiber. A probe beam is passed along the crystal direction of low birefringence of nearly circular optical indicatrix, rather than one of high EO modulation. The EO crystal is placed between two crossed polarizers and oriented such that a small tilt angle is subtended between its optic axis and the path of the probe beam. Improved optical coupling is achieved by using a large core multimode fiber at the output, to reduce optical insertion losses. A collimating lens emits the intensity modulated laser beam back to a photodetector, where the intensity modulated laser beam is converted to an electrical signal representing both field strength and phase of the electrical field applied to the sensor head.Type: ApplicationFiled: July 1, 2010Publication date: October 21, 2010Applicant: US Gov't Represented by the Secretary of the Navy Office of Naval Research (ONR/NRL) Code OOCCIPInventors: Dong Ho Wu, Anthony Garzarella
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Publication number: 20070059591Abstract: A battery assembly is provided for electrical concatenation in series. The battery assembly includes a plurality of battery packs; a switch; a receiver; and an actuator. Each battery pack includes a plurality of rechargeable battery cells electrically connected in series. The switch electrically connects and disconnects first and second battery packs together. The receiver transmits power from the switch. The actuator operates the switch to connect and disconnect the battery packs. In preferred embodiments, the switch includes first and second buses and a deflector. The first bus electrically contacts the first battery pack. The second bus electrically contacts the second battery pack. The deflector moves the first bus electrically connect and disconnect with the second bus in response to communication with the actuator. An electrical connector is further provided for mechanical engagement and disengagement of electrical conduction to a terminal. The connector includes a block and a plurality of contacts.Type: ApplicationFiled: June 2, 2006Publication date: March 15, 2007Applicant: United States of America via Secr. of Navy Office of Naval Research - Code OOCCInventors: Joseph Sharrow, Frank Peterkin