Patents Assigned to The United States of Americas represented by the Secretary of the AirForce
-
Patent number: 11568221Abstract: A low-power, controllable, and reconfigurable method to control weights in model neurons in an Artificial Neural Network is disclosed. Memristors are utilized as adjustable synapses, where the memristor resistance reflects the synapse weight. The injection of extremely small electric currents (a few nanoamperes) in each cell forces the resistance to drop abruptly by several orders of magnitudes due to the formation of a conductive path between the two electrodes. These conductive paths dissolve as soon as the current injection stops, and the cells return to their initial state. A repeated injection of currents into the same cell results in an almost identical effect in resistance drop. Different, stable resistance values in each cell can be controllably achieved by injecting different current values.Type: GrantFiled: March 8, 2019Date of Patent: January 31, 2023Assignees: ARIZONA BOARD OF REGENTS ON BEHALF OF NORTHERN ARIZONA UNIVERSITY, GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE AIRFORCEInventors: Bertrand F Cambou, Donald A. Telesca, Jr., Brayden Cole David Villa
-
Patent number: 10747711Abstract: Disclosed herein is a computing system with the capability to execute instructions in different positional notation values. The definition of a positional notation value is given by the general formula that represent a base 10 numeral in any positional notation in the following manner: . . . d3r3+d2r2+d1r1+d0r0, where d is a coefficient, r is the base of the positional number system (i.e. r=2 for binary, or r=3 for ternary), and the exponent is the position of the digit. The computing may provide a configuration which hybridizes the instructions of multiple positional notation values in variable ratios. The computing system may dynamically switch between the multiple hybridized instructions sets. Embodiments may be applied to provide security benefits.Type: GrantFiled: March 19, 2019Date of Patent: August 18, 2020Assignees: ARIZONA BOARD OF REGENTS ON BEHALF OF NORTHERN ARIZONA UNIVERSITY, GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE AIRFORCEInventors: Donald A. Telesca, Jr., Bertrand F Cambou, Paul G Flikkema
-
Patent number: 10296477Abstract: A system having a data bus, bus controller(s), remote terminal(s) and a logger. The data bus has an inverted differential line and a non-inverted differential line. The bus controller(s) are electrically coupled to the data bus. The remote terminal(s) are electrically coupled to the data bus. The logger has a bus transceiver and a controller. The bus transceiver is electrically coupled to the data bus. The controller is electrically coupled to the transceiver. The controller is configured to: capture a non-inverted data stream from the bus transceiver, capture an inverted data stream from the bus transceiver, convert the non-inverted data stream into non-inverted packets having a packet size, convert the inverted data stream into inverted packets having the packet size; and write the non-inverted data packets and inverted data packets to a non-volatile memory.Type: GrantFiled: October 11, 2017Date of Patent: May 21, 2019Assignee: United States of America as represented by the Secretary of the AirForceInventor: David C. Prentice
-
Patent number: 9316547Abstract: A new method for determining heat transfer coefficient (h) and adiabatic effectiveness (?) waveforms h(t) and ?(t) from a single test uses a novel inverse heat transfer methodology to use surface temperature histories obtained using prior art approaches to approximate the h(t) and ?(t) waveforms. The method best curve fits the data to a pair of truncated Fourier series.Type: GrantFiled: June 10, 2013Date of Patent: April 19, 2016Assignee: The United States of Americas represented by the Secretary of the AirForceInventors: James L. Rutledge, Jonathan F. McCall
-
Patent number: 9283875Abstract: A semi-active seat cushion and method of using the same. In one embodiment, the semi-active seat cushion comprises a plurality of chambers for containing a pressurized fluid, wherein each chamber is connected to at least one other chamber by an orifice that provides a fluid connection; a supply conduit for supplying a pressurized fluid to each of the plurality of chambers; and at least one relief valve that permits rapid and controlled deflation of the plurality of chambers. In another embodiment, the semi-active seat cushion comprises a smart fluid; a plurality of chambers configured for containing the smart fluid; a field generator; and a field controller.Type: GrantFiled: April 23, 2012Date of Patent: March 15, 2016Assignee: The United States of America as represented by the Secretary of the AirforceInventor: Joseph A. Pellettiere
-
Patent number: 9090519Abstract: Provided is an ionic liquid (IL) having anions and cations with a metalohydride in the IL of borohydrides and/or aluminum hydrides, as fuel and a choice of one or more oxidizers, which fuel and oxidizer have hypergolic tendencies.Type: GrantFiled: May 13, 2011Date of Patent: July 28, 2015Assignee: The United States of America as represented by the Secretary of the AirForceInventors: Tommy W. Hawkins, Stefan Schneider, Michael Rosander, Leslie Hudgens
-
Patent number: 9025333Abstract: A new multifunctional, thermoelastic cellular structure is described. The new structure provides tunable thermal transport behaviors particularly important for thermal switching. In its simplest example embodiment of a single or unit cell, opposing bimetallic elements bend in response to temperature changes and, below a tunable switching temperature, are separated in an open or insulating position and, at and above the switching temperature, bend to come into contact in a closed or conducting position. Multiple cells are combined in different lattice arrays to create structures that are both switchable and load bearing. The cells can be switched by both temperature and other external fields.Type: GrantFiled: November 22, 2011Date of Patent: May 5, 2015Assignee: The United States of America as Represented by the Secretary of the AirforceInventors: Jonathan E. Spowart, Wynn S. Sanders, Garth B. Wilks
-
Patent number: 7786438Abstract: A sensor assembly that replaces a single focal plane array detector with two focal plane array detectors orientated with respect to each other such that a power splitter divides an incoming light source equally between each detector. The two detectors are selected such that the locations of poorly-operating pixels in each detector do not overlay. The output signals of each detector are then electronically or analytically combined to yield 100 percent operability. Separate switchable wavelength filter wheels having one or more different wavelength filters may be positioned between the power splitter and each of the detectors. The power splitter may be replaced by a polarization splitter. One detector can be translated perpendicular to the incoming light source relative to the second detector to compensate for new poorly-operating pixels and/or to improve the spatial resolution.Type: GrantFiled: July 21, 2008Date of Patent: August 31, 2010Assignee: The United States of America as represented by the Secretary of the AirforceInventors: Nathan DeVilbiss, Ryan Olcott, Peter Thomas, Gregory Spanjers, James Winter, Jason Guarnieri, Timothy Klatt, Holly Victorson, Thomas Roberts, Robert Thompson
-
Patent number: 7336858Abstract: An in-fiber optical isolator for high-power operation using two kinds of fiber, not including the active fiber where laser gain occurs. A hi-birefringence passive fiber with a tilted Bragg grating is connected to the active fiber at one end with the connection region stripped and potted to remove pump and s-polarized signals. The other end of the hi-bi fiber is fusion spliced to a low-birefringence fiber and oriented so that the birefringent axes are parallel. The low-bi fiber then passes straight through a gap in a linear magnetic array calculated to cause a 45 degree Faraday rotation. The far end of the low-bi fiber is connected to another hi-birefringence passive fiber with a tilted Bragg grating but with the birefringent axes of the hi-bi rotated by 45 degrees with respect to those of the low-bi fiber. Backward light transmitted by the second Bragg grating will then be removed by the first Bragg grating.Type: GrantFiled: March 8, 2007Date of Patent: February 26, 2008Assignee: The United States of America as Represented by the Secretary of the AirforceInventor: Gerald T. Moore
-
Patent number: 6237795Abstract: A modular reusable transport container system is described for safely transporting small or medium size satellites and other sensitive cargo. The invention incorporates shock and vibration isolation systems, environmental control systems, integrated power converters, battery backup systems, and monitoring systems.Type: GrantFiled: May 26, 2000Date of Patent: May 29, 2001Assignee: The United States of America as represented by the Secretary of the AirforceInventors: Steven Buckley, Eugene Fosness, Steven F. Griffin, Keith Denover, Peter Wegner, Joel Gussy, Steven A. Lane, Sirirak Denover
-
Patent number: 4998112Abstract: A method for measuring the far field antenna pattern of a large phased array antenna on a conventional far field range by applying a correction factor to the antenna phase shifters. As the antenna is electronically steered to each of its scan angle, a particular correction factor is applied to each radiating elements to correct the far field antenna pattern to the shortened far field range.Type: GrantFiled: August 29, 1989Date of Patent: March 5, 1991Assignee: The United States of America represented by the Secretary of the AirforceInventors: Peter R. Franchi, Harvey Tobin