Matches 1 - 50 out of 153 1 2 3 4 >


Match Document Document Title
8961140 Aircraft propeller balancing system  
An aircraft system and method with a first counterweight rotating balancing rotor mass concentration, and a second counterweight rotating balancing rotor mass concentration to balance a first...
8961139 Aircraft propeller balancing system  
An aircraft system/method for propeller balancing. The system includes an inboard driver with a first and second inboard electromagnetic coil, the inboard driver and the first counterweight...
8955409 Rotating assembly including a dynamic balancing system  
A rotating assembly includes a shaft having a driven end and a driving end. At least one rotating member coupled to the driven end. A support member is operatively connected to the at least one...
8920125 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...
8882464 Aircraft propellers  
An aircraft propeller taper bore insert apparatus includes a tapered outer surface, the outer surface dimensioned and configured to fit within and be of substantially a same size and shape as an...
8672625 Wind turbine with monitoring sensors  
A vibration-resistant wind turbine and process for operation is provided. The wind turbine has a rotor with at least two blades, each of which includes an inclinometer arrangement with at least...
8668457 Gas turbine engine trim balance  
A trim balance for a gas turbine engine having a hollow rotatable rotor shaft includes an elongate support rod adapted for longitudinal accommodation within and mounting on an interior surface of...
8631578 Radial balancing clip weight for rotor assembly  
A balancing weight clip with a mass adapted to balance a rotor assembly of a gas turbine engine, includes a weight portion, a first flange engaging portion and a second flange engaging portion...
8632308 Fluid elastomeric damper assembly including internal pumping mechanism and volume compensator  
Rotary wing system with a rotating blade rotating about a rotation axis. The system includes a fluid damper with a damper fluid for controlling a troublesome motion. The fluid damper has an...
8579589 Mechanism for attenuating torque pulsations between an engine and a rotorcraft rotor driven by the engine  
The invention provides a mechanism for attenuating torque pulsations between an engine (2) and a rotor (1) of a rotorcraft. Torsion means (5) are interposed between the driving and driven shafts...
8573935 Helicopter rotor comprising a vibration damper, and method for updating the same  
A rotor for a helicopter, having: a hub rotating about an axis and in turn having a number of blades; and an at least partly hollow drive shaft connectable to a drive of the helicopter and...
8517685 Device for reducing vibration generated by rotorcraft rotor, and rotorcraft provided with such device  
A device (10) for reducing vibration of a main rotor (1) having a support (20) and a plurality of heavy elements (30) and of rollers (50). Each heavy element (30) includes two first openings (31)...
8516885 Rotating object dynamic balancing system and method  
A rotating object dynamic balancing system and method for balancing a rotating object including a shaft by using centrifugal force on a plurality of weighted masses traveling along at least one...
8506253 Balancing apparatus for rotor assembly  
A balancing assembly for a rotor assembly of a gas turbine engine includes a flange engaging portion defining a flange receiving opening for mating with the flange in a slidable manner. A hole...
8491265 Rotor imbalance load limiting system and method  
Methods and apparatus are provided for limiting the load on a rotor support structure when a rotationally mounted rotor becomes imbalanced. The rotor is rotationally mounted within a plurality of...
8474745 Rotor hub vibration attenuator  
A vibration attenuator for an aircraft has at least one weight mounted in a rotating system of a rotor hub of the aircraft, each weight being rotatable about an axis of rotation of the hub...
8454315 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...
8424799 Rotor hub vibration attenuator  
A vibration attenuator for an aircraft has at least one weight mounted in a rotating system of a rotor hub of the aircraft, each weight being rotatable about an axis of rotation of the hub...
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...
8360728 Aircraft with transient-discriminating propeller balancing system  
A system for balancing an aircraft propeller system receives a vibration signal from the aircraft propeller system and determines whether the vibration signal indicates a transient vibration...
8360722 Method and system for validating wind turbine  
A method of validating a wind turbine including a rotor includes intentionally inducing a loading imbalance to the rotor. The method also includes measuring the loading imbalance induced to the...
8336687 Vibration control apparatus, wind turbine generator and vibration control method  
It is intended to provide a vibration control apparatus that can be installed in a small pace and can be produced at low cost, as well as a wind turbine generator equipped with the vibration...
8308435 Methods and system for balancing turbine rotor assemblies  
A balancing system and method for reducing imbalance in a rotatable member of a machine is provided. The system includes a plurality of vibration sensors positioned about a stationary portion of...
8297928 Blade for reducing the drag movements of said blade, and a method of reducing such a drag movement  
A blade (10) extending longitudinally from a root (11) of the blade (10) to a free end (12) of the blade (10), the blade (10) having a resonator (13) incorporated therein to reduce the drag...
8246305 Gas turbine engine balancing  
An apparatus and method for balancing a gas turbine engine rotor includes a plurality of balancing weights adapted to be selectively attached to at least one of inlets or outlets of a cooling...
8235660 Fan, especially a ceiling fan with a balanced single blade  
Described is a fan with a blade suitable for use as a ceiling fan. The blade may be regarded as a single blade, although shaft is not attached to blade at one end thereof; rather, shaft is...
8226364 Blade provided with a resonator to reduce the drag movements of said blade, and a method implemented by said blade  
Described is a blade (10) extending longitudinally from a root (11) of the blade (10) to a free end (12) of the blade (10), the blade (10) being provided with an incorporated resonator (20) for...
8192162 Field installable and removable helicopter rotor blade vibration and blade tracking device  
This invention provides convenient airframe vibration and tracking improvements of a helicopter rotor blade by use of an elastomer profile system that is attached through an adhesive system that...
8186955 Rotating machine balancing member assembly including multiple interlocking balancing members  
A rotating machine includes a stationary member and a rotating member moveable relative to the stationary member. The rotating member includes at least one balancing member assembly receiving...
8186954 Gas turbine engine rotor and balance weight therefor  
A balance weight for a rotor includes: (a) an arcuate body including a front wall and a rear wall interconnected by an end wall, the front, rear, and end walls collectively defining a generally...
8123484 Torsional dynamic damper for a wind turbine and method of using same  
A wind turbine includes a tower, a nacelle located adjacent a top of the tower, a rotor coupled to the nacelle, and a dynamic vibration damper coupled to the tower and configured to dampen...
8070445 Balancing system for turbomachine rotor  
The present invention relates to a turbomachine rotor balancing system comprising a balancing flange (52) provided with through-passageways (78), the system further comprising balance weights (54)...
8070449 Wind turbine  
A vertical-axis wind turbine for use with an electrical generator for producing power by converting the energy of wind currents into mechanical rotational energy which is then used to operate the...
8066486 Method and apparatus for vibration-based automatic condition monitoring of a wind turbine  
Method and apparatus for vibration-based automatic condition monitoring of a wind turbine, comprising the steps of: determining a set of vibration measurement values of the wind turbine;...
8029240 Rotor blade adjustable weight retention system  
In one embodiment, a rotor blade balancing apparatus may include a tube member defining an inner cavity, a plurality of weights, and a biasing member. The tube member may be for the insertion into...
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...
7988416 Wind turbine blade with damping element  
A blade for a wind turbine generally comprises a shell body defined by first and second shells extending between a leading edge and a trailing edge, an inner spar supporting at least a portion of...
7955050 Turbine wheel assembly for a pneumatic rotary vibrator and method of making same  
An apparatus and method for a turbine wheel assembly for a pneumatic rotary vibrator that provides a selectable force output while being removably retained on a vibrator shaft member. The turbine...
7931438 Active tower damper  
A damper system for damping vibrations of a wind turbine having a tower, a nacelle, and at least one rotor blade is provided. The damper system includes a mass for damping vibrations of a wind...
7753651 Balancing flyweight, rotor disk equipped therewith, rotor and aircraft engine comprising them  
The balancing flyweight of a turbomachine rotor includes two pyramid shaped end parts each one having a base and an apex, and an intermediate part which connects the two bases of the end parts...
7581929 Rotational airfoil balance system  
A balance system for a rotational airfoil assembly includes a bulkhead, an elongated member, a support member and at least one balance weight. The elongated member extends through the bulkhead...
7491031 Balancing device of a turbomachine engine  
A device for balancing a turbomachine rotor includes at least one counterweight fitted to the rotor, wherein the counterweight includes two radial bearing surfaces oriented in two opposite radial...
7377749 Device for balancing a rotating part, in particular a turbojet rotor  
A device for balancing a rotating part, in particular a turbine rotor in a turbomachine such as a turbojet or the like, the device comprising at least one balance weight comprising engagement...
7347672 Rotor disk balancing device, disk fitted with such a device and rotor with such a disk  
A rotor disc includes a rim and a balancing device, which includes housings formed in the rim, and balancing masses housed in at least some of the housings.
7270517 Turbine blade with vibration damper  
A blade assembly (10) for a turbine (16) including a vibration damper (12) having a mounting base (38) sealingly disposed at an inlet end (24) of a cooling fluid passageway (22) within the root...
7252477 Rotating blade body  
A rotating blade body is provided that can restrain vibrations of rotating blades effectively. The rotating blade body comprises a rotor disc, a plurality of rotating blades being assembled so as...
7220104 Vibration reduction system for a wind turbine  
A wind turbine includes a tower, a nacelle supported at an upper end of a tower, a rotor having at least one blade and being arranged at the nacelle, and a vibration load reduction system disposed...
7189061 Cooling fan for vehicles  
A cooling fan having a circumferential ring. In ordinary fans of this type, deformation of fan blades causes the ring to buckle inward at locations between the blades. In one form of the...
7118343 Trailing edge adjustable weight system for helicopter main rotor blades  
A system of adjustable balancing weights is provided for a helicopter main rotor blade. The trailing edge of the rotor blade is formed with a plurality of recesses that each receive an...
6974307 Self-guiding wind turbine  
A self-guiding wind turbine made of two reinforced parallel girders whose side center of thrust is displaced from the column axis where it is supported and turns. Its dihedral-shaped two-bladed...

Matches 1 - 50 out of 153 1 2 3 4 >