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Match Document Document Title
US20150147177 ROTORCRAFT TOP FAIRING HAVING A PROFILE IN THE SHAPE OF A TRUNCATED DROP OF WATER THAT IS PROVIDED WITH A HUMP OF UNEVEN SURFACE  
A rotorcraft provided on top with a fairing (3) arranged below the rotary wing of a main rotor of substantially vertical axis of the rotorcraft, and covering a mechanism enabling the blades of the...
US20090060742 Rotor Head for a Twin-Rotor Helicopter  
A rotor head includes a hub and two joint members. The hub has opposite tubular end portions, each formed with a socket that extends inwardly from an end face thereof along a tube axis and that...
US20130034443 PLANAR FLEXBEAM UNIT  
A planar flexbeam unit (1, 40) as interface between a rotor shaft (2) and a multi-blade rotor, especially for a multi-blade main rotor of a helicopter. The planar flexbeam unit (1, 40) comprises a...
US20080112808 ROTOR SYSTEM WITH PITCH FLAP COUPLING  
An articulated rotor system with a servo-flap rotor control system locates the focal point of a blade retention spherical elastomeric bearing inboard of a joint in the servo-flap pitch control...
US20100092294 HELICOPTER ANTITORQUE TAIL ROTOR  
A blade for an antitorque tail rotor of a helicopter, having a leading edge and a trailing edge opposite each other and elongated along a longitudinal axis of the blade; the trailing edge, in use,...
US20100038469 Helicopter rotor  
A rotor for a helicopter, the rotor having a drive shaft rotating about a first axis; a hub connected functionally to the drive shaft in angularly fixed manner with respect to the first axis and...
US20100034654 Sculptured Throat Spool  
A sculpted throat spool of a tension-torsion strap assembly is disclosed. Using the sculpted throat spool minimizes the stress riser typically present at the edge of the spool when a...
US20140271199 High Flapping Yoke Hub Assembly Using a Cylindrical Elastomeric Attachment to Avoid Holes  
An apparatus comprising a rotor yoke comprising two longitudinal side portions interconnected by two outboard portions, wherein a center portion of each longitudinal side portion comprises a...
US20080014087 Tail rotor for remotely controlled toy helicopter  
A tail rotor for a remotely controlled toy helicopter includes a pitch control clevis rotatably mounted on a drive mast and including two side links including a member having an oval tunnel formed...
US20070122283 Rotor blade conncection  
The present invention concerns a rotor blade for a wind power installation comprising a plurality of holes which are arranged in the region of the rotor blade root and which are in the form of...
US20080253891 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...
US20140255191 Low Shear Modulus Transition Shim for Elastomeric Bearing Bonding in Torsional Applications  
A bearing assembly comprises a bearing, a shim disposed within the bearing, and a component disposed within the shim. The shim comprises a first material, the component comprises a second...
US20090162201 UNIFORM FATIGUE LIFE SPHERICAL ELASTOMERIC BEARING  
An elastomeric spherical bearing includes a multiple of elastomeric layers with an essentially equivalent fatigue life.
US20070128037 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...
US20090175725 LOW MAINTENANCE STIFF IN PLANE GIMBALED ROTOR HEAD  
A stiff in-plane gimbaled rotor head for a rotorcraft, such as a helicopter, includes a vertically extending rotor shaft, a center hub disposed on the rotor shaft for conjoint rotation therewith,...
US20150139800 HELICOPTER TRANSMISSION MOUNT SYSTEM  
A restraint system for a transmission in an aircraft can include a first strut having a first fluid chamber, a first piston resiliently coupled to a first housing with a first elastomeric member....
US20080152497 Pitch bearing containment seal  
A flexible, resilient seal protects a bearing in a pitch joint of a helicopter blade assembly from contaminants. The seal includes a flexible, resilient body having a first end bonded to a...
US20140271201 Jam-Tolerant Linear Control Motor for Hydraulic Actuator Valve  
According to one embodiment, a linear control motor includes a first permanent magnet, a coil, a first magnetic material, a shaft, and a first non-magnetic material. The first non-magnetic...
US20080267778 Torque Coupling for Rotary-Wing Aircraft  
A torque coupling (13) for a rotor head (11) of a rotary-wing aircraft has upper and lower plates (29, 31) configured for rotation with a rotor mast (19). Drive links (33) pivotally connected to...
US20070280828 Blade having an integral cuff, and a rotorcraft rotor provided with such a blade  
A rotorcraft blade is provided having at least one spar and an outer covering. At the root of the blade, the spar is subdivided into at least one bottom tape and at least one top tape. The blade...
US20140248150 Constant Velocity Joint with Spring Rate Control Mechanism  
According to one embodiment, a constant velocity (CV) joint includes a first yoke, a second yoke, and three bearings. The first yoke is configured to be rotatably coupled to an input device about...
US20150086358 ROTORCRAFT ROTOR INCLUDING PRIMARY PITCH HORNS AND SECONDARY HORNS  
A rotorcraft rotor comprises a blade having a pitch axis, a primary pitch horn for the blade, and a secondary horn opposite the primary pitch horn with respect to the pitch axis.
US20080003106 Rotor apparatus and methods for vertical lift aircraft  
Rotor apparatus and methods for vertical lift aircraft are disclosed. In one embodiment, a bearing assembly adapted for rotatably coupling a rotor blade to a support member includes an inner...
US20080304967 Actuation system, helicopter using the same, and controlling method therefor  
An actuation system includes a pump assembly configured to form a pump chamber; an actuator having first and second chambers and a movable member and configured to convert pressures applied to the...
US20130175384 Bearing Restraint for Rotor Systems  
According to one embodiment, a rotor system comprises a yoke, a grip, an elastomeric bearing, and a bearing restraint. The grip is positioned around a portion of the yoke and has both a closed end...
US20140133979 Constant Velocity Joint with Control Mechanism  
According to one embodiment, a constant velocity (CV) joint includes a first yoke, a second yoke, and a control mechanism. The first yoke is configured to be rotatably coupled to an input device...
US20140241884 ROTARY WING AIRCRAFT PITCH BEAM ATTACHMENT WITH ANTI-ROTATION PLATE DESIGN  
A retaining assembly for a tail rotor system is provided including a washer having a plurality of splines. The washer is configured to couple to an adjacent pitch change shaft. A retaining nut...
US20130084183 DUAL SERIES DAMPER SYSTEM  
A dual series damper includes a fluid damper portion and a elastomeric damper portion. The fluid damper portion includes a first housing, a first connection member, and a piston coupled to the...
US20140271200 Flexing Clevis Arrangement Bolted Joint Attachment For Flexible Rotor Hub With High Offset And High Flapping  
A flexible joint assembly for providing flexure to a rotor blade comprising an upper hub plate and a lower hub plate configured to secure a rotor blade yoke via a bolted joint located radially...
US20150239555 ROTORCRAFT ELASTOMERIC BEARING ASSEMBLY  
In some embodiments, a rotorcraft may include a yoke, a blade, a spindle associated with the yoke, and an elastomeric bearing assembly. The center length of the spindle may define a center axis...
US20130224022 HELICOPTER BLADE RETENTION COMPOSITE YOKE  
A rotary wing aircraft yoke is provided including an arcuate medial portion. A pair of arms extends from the medial portion and each terminates in a distal end. The yoke is made from multiple...
US20110027082 METHOD OF REDUCING OR EVEN ELIMINATING THE VIBRATION OF A ROTORCRAFT LIFT AND PROPULSION ROTOR, AND AN AIRFOIL ASSEMBLY AND A ROTOR IMPLEMENTING SAID METHOD  
The present invention relates to a method of reducing the vibration of a lift and propulsion rotor (5) of a rotorcraft (1), the rotor having a plurality of airfoil assemblies (10) that perform...
US20140263855 Spindle Mounted Tiltrotor Pylon with Fixed Engine Arrangement  
A rotor system for tilt rotor aircraft comprises an engine disposed at a first fixed location on a wing member; a prop-rotor pylon mechanically coupled to the engine along a drive path, and a...
US20140377068 ROTOR BLADE CONTROL DEVICE  
Rotor blade control device for a helicopter, consisting of a swash plate disk, the swash plate disk consisting of a non-rotating part of the swash plate disk, which is stationary stationarily...
US20150104314 ADAPTIVELY-TWISTABLE BLADE, AND AN AIRCRAFT INCLUDING SUCH A BLADE  
A blade (1) having an outer covering (2) defining a cavity (8). A carriage (20) is arranged in said cavity (8), the carriage (20) being provided with a torsion bar (21) and at least two arms (22)...
US20140314563 VIBRATION CONTROL OF A SWASHPLATELESS COAXIAL ROTOR  
A rotary wing aircraft is provided including a dual counter-rotating, coaxial rotor system having an upper rotor system and a lower rotor system rotatable about a common axis. A plurality of blade...
US20150034772 Composite Flexure for Tiltrotor Rotor System  
According to one embodiment, a composite flexure may secure a rotor blade to a yoke in a tiltrotor rotor system. The composite flexure includes a composite body, a first end configured to couple...
US20150125300 ROTOR HUB FOR A ROTORCRAFT  
A drive mechanism for a rotary aircraft includes an outer drive member having a plurality of drive trunnions extending therefrom; a middle drive member resiliently coupled to the outer drive...
US20150240868 BEARING ARRANGEMENT WITH A FIRST BEARING LAYER AND A SECOND BEARING LAYER  
A bearing arrangement with a first bearing layer comprising a first bearing support element and a second bearing layer comprising a second bearing support element, the first and second bearing...
US20100196161 ROTOR HEAD OF REMOTELY-CONTROLLED HELICOPTER AND REMOTELY-CONTROLLED HELICOPTER  
When an R/C helicopter of a single rotor type is configured to have a small size and light weight to be used indoors, a flying operation thereof can be stabilized and operability can be improved....
US20150158583 STIFF-IN-PLANE ROTOR CONFIGURATION  
A rotor assembly for a rotary-wing aircraft, the rotor having a central hub assembly with a flexure-type, twist-shank yoke with multiple arms, each arm being adapted for a rotor blade to be...
US20120201678 FLEXBEAM ROTOR  
A rotor hub assembly for a helicopter includes a rotor hub operably connectible to a shaft of a helicopter. One or more flex beams extend through the rotor hub, with each end of each flex beam...
US20150203198 FLEXBEAM UNIT FOR A BEARINGLESS OR A HINGE- AND BEARINGLESS MULTI-BLADE ROTOR OF A ROTARY WING AIRCRAFT  
A flexbeam unit for a multi-blade rotor of a rotary wing aircraft, said flexbeam unit defining a predetermined number of torsion elements that are connectable with associated rotor blades, at...
US20150158582 BEAM FOR A ROTORCRAFT ROTOR AND ROTORCRAFT ROTOR  
A beam for a rotorcraft rotor and particularly to a helicopter rotor. Said beam comprises a hub connection portion, a blade connection portion, a first flexure portion located between the hub...
US20140241885 PARTLY CRUCIFORM FLEXBEAM AND METHOD OF MANUFACTURING SUCH A FLEXBEAM  
A partly cruciform flexbeam (1) of a bearingless main rotor system of a helicopter with a hub drive and an airfoil blade. The partly cruciform flexbeam (1) comprises a flexbeam head (2) with a...
US20130034442 LEAD LAG DAMPER FOR HELICOPTER ROTOR UNIT  
A lead lag damper (10, 11) for a helicopter rotor unit has a rotor and a hub (8), said rotor having N rotor modes, with N being the number of blades. This centered single lead lag damper (10, 11)...
US20100124501 MULTIPLE FUNCTION INTERFACE FITTING  
An apparatus may comprise a housing, a first member, and a second member. The housing may have a first end, a second end, a first side, a second side, an opening located in the first end, and a...
US20070014665 Process and apparatus for manufacturing a connection and stress transmission element by overinjection  
A connection and stress transmission element for automotive vehicle mechanisms, the apparatus and the process for manufacturing the joining element by ovreinjection. The joining element has a...
US20100278648 TENSION-TORQUE-TRANSMISSION ELEMENT FOR A FENESTRON BLADE AND METHOD FOR PRODUCING IT  
A tension-torque-transmission element (3; 3′; 4) for a rotor blade of a rotary wing aircraft (helicopter), in particular for a fenestron blade of a tail rotor, with a connecting section on the...
US20150197333 FLEXBEAM UNIT FOR A HINGELESS OR A HINGE AND BEARINGLESS MULTI-BLADE ROTOR OF A ROTARY WING AIRCRAFT  
A flexbeam unit for a multi-blade rotor of a rotary wing aircraft, said flexbeam unit comprising a plurality of flexbeam elements that define a predetermined number of torsion elements and a...

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