649 patents
Page 28 of 33
Utility
Method for reducing direct digital synthesizer (DDS) and mixer spurious
13 Apr 20
A method of producing a low spurious output signal in a frequency generator circuit comprises, in a direct digital synthesizer (DDS), generating a signal at a first frequency; mixing the signal to produce a signal at a second frequency in an operating band of interest higher than the first frequency; determining spurious signals in the second frequency signal due to non-linearity in a digital to analog converter (DAC) of the DDS; generating at least one amplitude and frequency vector containing information relating to an amplitude value and frequency value representative of one of the determined spurious energy signals; generating a pre-distortion signal based on the at least one amplitude and frequency vector; and combining the pre-distortion signal with the signal generated by the DDS to produce a corrected output signal, wherein the pre-distortion signal is phase offset from a corresponding determined spurious signal to cancel the corresponding determined spurious signal.
Peter L. Delos, Douglas A. Leonard, Jr.
Filed: 7 Oct 18
Utility
Mandrel forming for discrete wing skin stiffeners
6 Apr 20
In one embodiment, a stiffener may be formed by inserting a plurality of flexible mandrels into a channel of a tool having a three-dimensional contour, placing a vacuum bag over the flexible mandrels and the tool, with the mandrels disposed between the vacuum bag and the tool, and applying vacuum pressure between the vacuum bag and the tool.
Nicholas Lee Huddleston, Jaime Ballester
Filed: 9 Jul 17
Utility
Light weight rigid rotor with blade fold capability
6 Apr 20
A rotor blade rotated about a rotor hub is provided including a first section configured to mount to the rotor hub.
David H. Hunter, Eric Lucien Nussenblatt
Filed: 30 Apr 15
Utility
Coaxial rotor yaw control
6 Apr 20
A method includes determining, by a computing device comprising a processor, a value for at least one parameter related to an operation of a coaxial rotary wing aircraft; processing, by the computing device, the at least one parameter to determine control power available from one or more flight controls comprising a differential cyclic; and establishing, by the computing device, a value for the differential cyclic to create a net yaw moment for the rotary wing aircraft based on the determination of the available control power.
Kenneth S. Wittmer
Filed: 14 Oct 13
Utility
Structural panels for exposed surfaces
6 Apr 20
An apparatus includes a foam layer, a coating layer and an elastomer.
Steven Edward Bullock, Vernecia SharaƩ Meredith, Charles J. Novak
Filed: 23 Apr 17
Utility
Sea state estimation
6 Apr 20
A method for measuring sea state includes scanning an area of a waterborne moving object over a period of time using at least one sensor to obtain point cloud data of the moving object.
William McNeill, Brigid Blakeslee
Filed: 30 Mar 17
Utility
Gas turbine exhaust assembly
6 Apr 20
A gas turbine exhaust assembly includes an exhaust flow path configured to receive an exhaust flow from a gas turbine engine, the exhaust flow path defined by an inner hub and a radially outer wall.
Joseph Lawrence Simonetti, Donald William Lamb, Jr., Shyam Neerarambam
Filed: 24 Feb 16
Utility
Insertion tool for right-angled RF connectors
6 Apr 20
An apparatus includes a shaft, a slide lock, and a pin.
Wesley S. Owen
Filed: 14 Dec 17
Utility
Variable thickness hollow conformal nose cone
6 Apr 20
The embodiments relate to a conformal, sometimes referred to as aerodynamic, nose cone, and in particular to a hollow conformal nose cone that is transparent to electromagnetic radiation of a predetermined wavelength, or wavelengths, and that comprises a variable thickness such that the electromagnetic radiation received on an outer surface of the nose cone forms a predetermined beam pattern within the nose cone.
Robert J. McCarty, Jr., Don A. Larson
Filed: 27 Jul 15
Utility
Strain gauge detection and orientation system
6 Apr 20
A system includes a signal generator configured to generate a signal, the signal being a constant frequency signal or the signal ranging in frequency during a time period.
George N. Edwards
Filed: 2 Nov 17
Utility
Rotorcraft rotor assemblies
30 Mar 20
An attachment assembly for coupling a rotary blade to a hub includes a hollow shear pin, a nut cap, and a tensioning fastener.
Bryan K. Baskin, Robert Higbie, Frank P. D'Anna, Ryan Smith
Filed: 12 Jan 17
Utility
Tension torsion strap
30 Mar 20
A tension torsion strap by which a blade is connectable with a hub of a propulsor is provided.
David A. Darrow, Jr., Ron William Waldo, Joshua Richards, Kristopher Michael Haydel, Lance Halcom
Filed: 8 Jun 16
Utility
Structural pi joint with integrated fiber optic sensing
30 Mar 20
A structural health monitoring system includes a first component and a second component associated at a joint.
Eric C. Schenck, Nathaniel Dew, Andrew M. Brookhart, Jonathan K. Garhart, Cody M. Ture
Filed: 2 Aug 17
Utility
Single lens head-up display apparatus
30 Mar 20
A head-up display (HUD) apparatus is provided.
Jason M. Black, Gregory A. Harrison, Julio Corsi
Filed: 31 Oct 17
Utility
System with a high-power microwave vacuum tube (HPM-VT) device having non-evaporable getters (NEG) integrated in an RF cavity
23 Mar 20
A device comprising an RF cavity enclosure including a tubular section having a plurality of interior structures radially or axially arranged which forms an unobstructed inner hollow center within the tubular section.
Patrick M. Kelly, James-William B. Bragg
Filed: 25 Apr 19
Utility
Two-phase fluid-actuated cooling device, system, and method
23 Mar 20
An electronics circuit card system includes a flexible elongated hollow receptacle; a working fluid disposed within the flexible elongated hollow receptacle; one or more wicking structures formed within an interior hollow region of the flexible elongated hollow receptacle, wherein the one or more wicking structures are configured to circulate the working fluid within the flexible elongated hollow receptacle and expand the flexible elongated hollow receptacle against an electronics circuit card; and a chassis configured to hold the flexible elongated hollow receptacle against the electronics circuit card.
John Ditri, Jay H. Ambrose
Filed: 18 Jan 18
Utility
Magnetic identification assembly and method of identifying a component
23 Mar 20
An embedded magnetic identification assembly includes a base component formed of a material.
Joseph V. Mantese, Nicholas Charles Soldner, Michael A. Klecka
Filed: 15 Oct 15
Utility
Trim tab retention system, an aircraft employing same and a method of retaining a trim tab within a blade housing
16 Mar 20
A trim tab for use in a blade housing includes a cavity connected to an opening extending from the cavity out a trailing edge of the blade housing, the cavity has a first dimension which is greater than a second dimension of the opening at a same spanwise location of the blade housing.
Timothy James Conti, David N. Schmaling, Leon M. Meyer, Yih-Fam Chen
Filed: 21 Apr 16
Utility
Aircraft with overlapped rotors
16 Mar 20
An aircraft is provided and includes a fuselage from which a tilt-wing respectively extends, first prop-rotors, which are formed to define first rotor disks and which are respectively disposed on first portions of each side of the tilt-wing, second prop-rotors, which are formed to define second rotor disks and which are respectively disposed on second portions of each side of the tilt-wing such that the corresponding pairs of first and second rotor disks overlap, and a drive shaft system.
Mark R. Alber, Jeffrey Parkhurst, Charles Gayagoy
Filed: 3 Oct 16
Utility
Rope deployment mechanism and method
16 Mar 20
A rope deployment mechanism includes a load beam pivotable between an open position and a closed position.
Barton J. Hainsworth, Robert Wislocki
Filed: 14 Sep 15