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| Number | Title | Issue Date |
| 8442706 | Module for integrated approach to an offshore facility A system and method to facilitate approach of a VTOL aircraft to an offshore facility includes inputting a waypoint for a landing platform of an offshore facility into an aircraft module, inputting an offset distance from the landing platform into the aircraft modul... | 05/14/2013 |
| 8440045 | Conformal deltoid noodle for a composite structure A method of fabricating a conformal deltoid noodle includes providing a composite prepreg material having a predetermined length and a width, the predetermined length being aligned along a longitudinal axis; subjecting the composite prepreg material to a cutting pro... | 05/14/2013 |
| 8403643 | Dual frequency hub mounted vibration suppressor system A vibration suppressor system includes an annular electric motor system which independently controls rotation of at least two masses about the axis of rotation to reduce in-plane vibration of the rotating system. A method of reducing vibrations in a rotary-wing airc... | 03/26/2013 |
| 8398869 | Transfer film and method for fabricating a circuit A method of fabricating a circuit includes bonding an electrically conductive layer to a carrier film using an adhesive selected from acrylic polymer and silicone polymer, removing selected portions of the electrically conductive layer from the carrier film to provi... | 03/19/2013 |
| 8397603 | Split-torque gear box A split torque gearbox system provides a multiple path, three stage power gear train that transmits torque from a high-speed engine to a low speed output shaft, while providing equal gear load distribution with a floating pinion in the second stage of reduction. The... | 03/19/2013 |
| 8392037 | Stabilized approach to a point in degraded visual environment A flight control system includes a fly by wire system operable to provide predictive termination point symbology overlaid on a synthetic imagery displayed by a display system in response to a control system and a sensor system. A method to facilitate a VTOL aircraft... | 03/05/2013 |
| 8384605 | Wireless communication between a rotating frame of reference and a non-rotating frame of reference A communication system includes a first communication module within a rotating frame of reference and a second communication module within a fixed frame of reference. The first communication module and the second communication module in wireless communication at lea... | 02/26/2013 |
| 8372498 | Composite core densification A reinforcement tube for composite core densification and a composite article therewith. ... | 02/12/2013 |
| 8353673 | Main rotor blade with integral cuff A main rotor blade assembly includes a main spar with an integral cuff. The main spar is directly to a rotor hub assembly through the integral cuff. ... | 01/15/2013 |
| 8349093 | Method of plasma nitriding of alloys via nitrogen charging A nitrided metal includes a metal core with a first microstructure and a nitrogen-containing solid solution region on the metal core. The nitrogen-containing solid solution region is free of nitride compounds and includes a second microstructure which is equivalent ... | 01/08/2013 |
| 8341934 | Infrared suppression system with spiral septum An InfraRed Suppression System (IRSS) includes a double-walled exhaust duct and double walled septum. The double walled structure provides a flow path for secondary (non-exhaust gas) cooling air flow to slots along the surfaces exposed to exhaust gases. Exhaust gas ... | 01/01/2013 |
| 8327738 | Composite transmission housing with discontinuous fiber preforms A composite transmission housing includes resin transfer molding or vacuum assisted resin transfer molding manufacturing processes combined with discontinuous fiber preforms. The preforms are assembled in a prepared injection and cure mold with additional details an... | 12/11/2012 |
| 8303248 | Swash plate anti-torque mechanism An anti-torque mechanism which permits a full range of swashplate assembly motion. The anti-torque mechanism generally includes an anti-torque shaft and a compound bearing mounted thereto to provide five-degrees-of-freedom (spherical-linear-elastomeric) so as to per... | 11/06/2012 |
| 8303208 | Locknut assembly for a coaxial shaft An exemplary lock out assembly includes a lock nut defined about an axis. The lock nut defines inner apertures along an inner diameter and outer apertures along an outer diameter. The inner apertures are at least partially threaded. The outer apertures are at least ... | 11/06/2012 |
| 8275585 | Spherical elastomeric bearing with improved shim thickness An elastomeric spherical bearing includes a multiple of shims, at least two of which have different thicknesses. In one exemplary embodiment, each of the shims has a different thickness with an essentially equivalent stress on each shim. ... | 09/25/2012 |
| 8271151 | Flight control system for rotary wing aircraft A flight control system and method includes a control loop control law to bias the collective stick toward a trim reference position with a motor and generate a force gradient with a clutch. ... | 09/18/2012 |
| D665720 | Rotary wing aircraft | 08/21/2012 |
| 8231085 | Automatic trim system for fly-by-wire aircraft with unique trim controllers A flight control system includes a controller which defines a controller displacement and a control surface which defines a control surface authority. A module operable to provide a displacement feel to the controller in response to a remaining portion of the contro... | 07/31/2012 |
| 8200442 | Usage monitor reliability factor using an advanced fatigue reliability assessment model According to one non-limiting embodiment, a method includes accessing flight regime rates of occurrence distributions associated with one or more flight regimes for a fleet of aircraft. Using the accessed flight regime distributions, a factor for at least one of the... | 06/12/2012 |
| 8172540 | Airfoil for a helicopter rotor blade An airfoil family for a helicopter rotor blade, designated SC362XX. SC362XX essentially removes the large lower surface suction peak associated with ‘drag creep’ at moderate lift coefficients while reducing the peak Mach number and shock strength at high lift/Ma... | 05/08/2012 |
| 8142158 | Compact load path swashplate assembly A swash plate assembly includes a rotationally stationary swash plate and rotational swash plate which rotates relative to the rotationally stationary swash plate through a bearing system. Each servo control rod is attached to the swash plate assembly to communicate... | 03/27/2012 |
| 8091862 | Butterfly valves having sleeve inserts A butterfly valve having a valve body, a butterfly shaft, a butterfly plate, and a sleeve insert is provided. The valve body is made of a first material and the sleeve insert is made of a second material. The butterfly shaft is in the valve body for rotation about a... | 01/10/2012 |
| 8043458 | Method of forming panels using an in-situ tape placement process and panels formed therefrom A composite panel and method of manufacture includes a support structure and a tape skin wound about the support structure. A mandrel assembly with extractable longitudinal mandrels facilitates winding of the tape skin onto the support structure. The composite panel... | 10/25/2011 |
| 8043053 | Self locking trim tab A trim tab assembly includes first and second shape memory alloy (SMA) actuators and a trim tab substrate which provide elastic/plastic locking in response to an induced strain actuation. ... | 10/25/2011 |
| 8042659 | Active force generation/isolation system employing Magneto Rheological Fluid (MRF) A system for reducing vibrations in a rotating system uses a variable viscosity medium that is redistributed in a housing connected to the rotating system. Specifically, the medium is responsive to a control signal that is generated as a function of rotational speed... | 10/25/2011 |
| 8038394 | System and method of damping a 1P motion A rotor system includes a multiple of rotor blade yokes mounted to a rotor hub. A lead/lag damper is mounted to each of the rotor blade yokes and to a damper hub. An actuator system is operable to shift a damper hub axis of rotation relative the rotor axis of rotati... | 10/18/2011 |
| 8032269 | Control surface failure detection for fly-by-wire aircraft A flight control system which detects a failure of a flight control surface and performs at least one action in response to the detected failure. ... | 10/04/2011 |
| 8021115 | Active force generation system for minimizing vibration in a rotating system A method and device for reducing vibratory noise in a system with an integral rotating member includes independently operable drive systems for controlling the angular velocity of at least two independently rotatable masses. Control signals manipulate the drive syst... | 09/20/2011 |
| 8015900 | Split-torque gear box A split torque gearbox system provides a multiple path, three stage power gear train that transmits torque from a high-speed engine to a low speed output shaft, while providing equal gear load distribution with a floating pinion in the second stage of reduction. The... | 09/13/2011 |
| 7999790 | Multi-functional mission grip for a vehicle A mission control grip mounted to a consol to provide a crew interface with a multitude of systems through a multitude of Multi-Functional Displays (MFDs). The mission control grip includes a fist-shaped grip movable about a first axis and a second axis, a thumb-ope... | 08/16/2011 |
| 7988089 | Swashplate trajectory control A system and method of controlling a rotary-wing aircraft includes transforming a non-rate limited servo position command into a rate limited servo position command. ... | 08/02/2011 |
| 7984146 | Aircraft health and usage monitoring system with comparative fleet statistics A Health and Usage Monitoring System (HUMS) utilizes a common architecture which permits OEM and rotorcraft operators to view and trend HUMS data for an entire aircraft fleet independent of aircraft model, HUMS vendor, or raw data format. The system operates through... | 07/19/2011 |
| 7983809 | Aircraft integrated support system (ISS) An aircraft integrated support system (ISS) downloads Integrated Vehicle Health Management System (IVHMS) data from an aircraft, processes the downloaded data to infer a status of aircraft systems and displays maintenance information via an Interactive Electronic Te... | 07/19/2011 |
| 7970498 | Model based sensor system for loads aware control laws A flight control system includes a model-based sensor system which estimates angular accelerations to control rotor system moment such that loads on the aircraft structure are reduced to thereby allow an aircraft structural envelope to more closely follow an aircraf... | 06/28/2011 |
| 7967239 | Rotor drive and control system for a high speed rotary wing aircraft A drive system for a high speed rotary-wing aircraft includes a combiner gearbox in meshing engagement with a main gearbox. The combiner gearbox is driven by one or more engines such that a main rotor system and a translational thrust system are driven thereby. The ... | 06/28/2011 |
| 7958801 | Harmonic force generator for an active vibration control system A force generator for an active vibration control (AVC) system provides a mass located upon an inner circular member which is movable within an outer circular member to simultaneously complete one revolution about its axis as it orbits within the outer circular memb... | 06/14/2011 |
| 7954766 | System and method for improved rotary-wing aircraft performance with interior/external loads An interactive aircraft load management system automates calculation and provides simulation capability to changes in an aircraft C.G. limit for display on a three-dimensional aircraft symbology. The aircraft load management system also communicates with a fly by wi... | 06/07/2011 |
| 7942365 | Variable speed transmission for a rotary wing aircraft A transmission gearbox for a rotary-wing aircraft includes a main gearbox and a variable speed gearbox in meshing engagement with the main rotor gearbox. The variable speed gearbox permits at least two different RPMs for the main rotor system without disengaging the... | 05/17/2011 |
