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7565838 |
Propeller tuner assembly
One embodiment of a propeller tuner assembly ( 10 ) formed in accordance with the present disclosure includes a frame ( 12 ) and a bearing assembly ( 64 ) having a coupler ( 90 ) adapted to...
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7540310 |
Continuity-detecting method of dispensing particles, a particle filling line and apparatus for dispensing particles
A particle filling line comprises a vertically-oriented conduit that includes a conduit hollow. The conduit includes a conduit top and a conduit bottom. The conduit bottom defines an outlet. The...
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7500299 |
Method for introducing a deliberate mismatch on a turbomachine bladed wheel and bladed wheel with a deliberate mismatch
A method to introduce a deliberate mismatch into a turbomachine bladed wheel so as to reduce vibration amplitudes of the wheel in forced response. The method includes a step of determining an...
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7415878 |
Ball bearing turbocharger balancer
An exemplary method for balancing a rotating assembly of a turbocharger, where the rotating assembly includes a shaft rotatably supported by a bearing cartridge, includes loading the rotating...
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7370529 |
Method for balancing an object having multiple radial projections
A method of balancing a movable rotating object having multiple radial projections, such as a ceiling fan, the method comprising the steps of: attaching to a non-rotating portion of the object a...
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7069654 |
Rotor balancing
A method of balancing a rotor ( 10 ), the said method comprising the steps of determining the position of the center of mass of a rotor ( 10 ) to be balanced prior to the rotor ( 10 ) being...
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6909948 |
Accelerometer configuration
The present invention provides a system and method for using the external accelerometer in an aircraft engine configuration as a backup accelerometer, in the event the internally located production...
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5671051 |
Helicopter blade tracking system
A helicopter blade tracking system including an apparatus and method having a self-contained light unit on each blade; each light unit being of similar construction and matched in size and weight....
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5610332 |
Self piloting balance arbor
A self piloting balance arbor for use in the dynamic balancing of gas turbine engine components having shafts extending therefrom. The arbor includes a cylindrical sleeve for receiving the shaft,...
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5475622 |
Method and apparatus for balancing helicopter rotor blades
The rotor blades of a helicopter are balanced both in the chordal direction and in the spanwise direction in a static balancing assembly. The assembly includes a support surface on which there are...
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5219454 |
Method and apparatus for balancing wind turbine rotors
A method for balancing the rotor of a wind turbine and a balancing weight. The weight is formed of a piece of steel or other material of sufficient weight bent in an L shape with holes that allow...
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5140856 |
In situ balancing of wind turbines
A slowly turning rotating mass, such as a wind turbine rotor, is balanced in situ by measuring the magnitude of a phenomenon, such as acceleration, created by rotor unbalance at a location on a...
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4991437 |
Airfoil balancer
The invention is a method and device for precisely balancing the mass and center of gravity of airfoils, one pair at a time. Airfoils are clamped between grooved clamps having a central pin, and...
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4976147 |
Device for measuring dynamic balance of a rotor
A device for measuring dynamic balance of a rotor including a shaft to which an impeller is secured at its one end and which has a neck portion adjacent to the impeller so that the shaft may be...
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4971641 |
Method of making counterrotating aircraft propeller blades
An aircraft propeller blade is constructed by forming two shells of composite material laminates and bonding the two shells to a metallic spar with foam filler pieces interposed between the shells...
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4937758 |
Method and apparatus for reducing vibration over the full operating range of a rotor and a host device
Disclosed is a system and method for minimizing vibration over the full operating range of a rotor of an apparatus. The system includes a transducer or an array of transducers for resolving up to...
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4879792 |
Method of balancing rotors
Given limitations on potential locations, weight sizes and amount of weights all possible applied unbalance magnitudes and angles are calculated after determining the initial unbalance magnitude...
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4716761 |
Method and jig for dynamically balancing an assembly of the jig and rotor
A method of dynamically balancing an assembly of a metal jig and a ceramic rotor attached thereto, the ceramic rotor having a shaft portion, and the metal jig having at its one axial end a fixing...
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4628733 |
Method and apparatus for balancing a motor-fan system
A method and apparatus for balancing of a motor armature and fan coupled thereto is disclosed. The apparatus includes a pair of spaced end brackets for supporting an armature of the motor and the...
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4586225 |
Apparatus for the transfer of a complete turbine module from a balancing machine to an engine and vice versa, and method for operating the said apparatus
Apparatus for the transfer of a module, the module including an outer casing in which is held the stator stage and a turbine rotor constituted by disks supporting blade rows, the disks being held...
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4583862 |
Optical position and orientation sensing systems
Orientation and/or position of a first body, such as the inboard end 42 of a helicopter blade 21, with respect to a second body, such as a rotor hub arm 36, is sensed by determining the position of...
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4573355 |
Device for the determination of the unbalance of propellers
A propeller 12 is supported by means of a propeller accommodation 10 comprising a fixing flange on a tubular hollow bending spring 16. A tubular transmitting member 24 coaxial to the hollow bending...
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4531408 |
Control of rotor blade stroboscopic display
The invention concerns method and apparatus to obtain accurate tracking of rotor blades, as for example helicopter rotor blades, despite the existence of conditions transiently altering rotor...
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4530239 |
Universal balance plate
A universal balancing plate is presented for balance of rotational parts. The plate is an aluminum plate which is webbed for strength and hard coated for wear. There are five slots in radial...
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4513619 |
Testing the balance of a rotatable member
Asymmetries of rotatable members such as aircraft propellers can be balanced out by the careful addition of counterweights at proper positions on the members. An accelerometer coupled to the...
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4489605 |
Balancing machine for large rotatable parts
A machine for balancing large rotatable parts such as marine propellers in the plane of rotation. A swing assembly hangs from a support assembly such as two spaced posts on a stand by means of two...
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4465367 |
Process and device for measuring and adjusting out-of-track distances of helicopter rotor blades
An apparatus and procedure for measuring and regulating the relative vertical displacement of helicopter blades from a rotational plane, comprising a stroboscopic illuminating means, intended to be...
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4372157 |
Aerodynamic data collection procedure
An improved procedure for collecting experimental data reflecting the behavior of a time varying aerodynamic parameter at an airfoil in a cascade of airfoils vibrating harmonically in a fluid...
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4305292 |
Methods and apparatus for balancing ceiling fan blades to improve their aerodynamic performance
Method and apparatus for use in balancing the blades of ceiling fans, wherein the pitch angles of the blades and the dihedral angles of the blades are measured and corrected, if necessary, by use...
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4112774 |
Aircraft rotor out-of-track correction method and apparatus
Vibration of a bladed rotor is reduced by a method that includes: (a) rotating the rotor at a selected power level, at which vibration is produced, (b) detecting an out-of-track condition of a...
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4109549 |
Dynamic balancer for rotating bodies and method of manufacturing same
A rotating mechanism such as a model aircraft propeller shaft is balanced by a dynamic balancing apparatus comprising a disc rotating with the shaft and a stainless steel O-ring partly filled with...
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4053123 |
Method and apparatus to determine need for rotor blade pitch adjustment and/or blade substitution
The output of an aircraft propulsion or lift rotor blade out-of-track pick-up is processed in such a way as to enable quick determination of need for blade pitch adjustment, the approximate amount...
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4046487 |
Turbine blade indexing assembly
A turbine blade indexing assembly adapted for variably adjusting the pitch of the turbine blades in a turbine wheel. The indexing assembly includes a housing secured to a turbine hub and an...
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3954229 |
Automatic one-per-rev control system
Vibration in the helicopter fuselage produced through the helicopter rotor at a frequency of one for each rotation of the rotor (commonly identified in the art as a one-per-rev vibration) is...
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3952601 |
Helicopter rotor blade balancing method
A helicopter rotor blade having at least one ramp tab of selected span and chord dimensions, weight and shaped to define an outer surface of selected angularity with respect to the blade chord and...
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3945256 |
Helicopter rotor balancing apparatus and method
The method of balancing a rotor having multiple blades and defining an axis of rotation, and wherein structure proximate the rotor is subject to vibratory motion due to dynamic unbalance of the...
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3912200 |
Selective rotor blade severing apparatus
An emergency rotor blade disconnect system for at least two pairs of oppog helicopter rotor blades. A plurality of parallel wires are embedded in each blade and electrically connected to an...
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3830109 |
DEVICE FOR DYNAMIC BALANCING OF ROTORS
A device for dynamic balancing of rotors comprising a body in the form of a ring secured on the side surface of the rotor being balanced and a disc with a test weight installed on said body and...
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3802273 |
HELICOPTER ROTOR BALANCING METHOD AND SYSTEM
The method of balancing a rotor having multiple blades and defining an axis of rotation, and wherein structure proximate the rotor is subject to vibratory motion due to dynamic unbalance of the...
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3782202 |
METHOD AND APPARATUS FOR BALANCING SEGMENTED PARTS
A segmented part such as a fan blade is supported on a spherical air bearing so that unbalance in the blade causes the bearing to tilt. Displacement of the bearing is sensed by a pair of...
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3782201 |
METHOD AND APPARATUS FOR STABILIZING A SPHERICAL BEARING
A segmented part such as a fan blade is supported on a spherical air bearing so that unbalance in the blade causes the bearing to tilt. Displacement of the bearing is sensed by a pair of...
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3769854 |
STRUCTURE FOR AND METHOD OF AUTOMATIC BALANCING OF A ROTATING MEMBER
Structure for and a method of minimizing static imbalance of a rotating member including a pair of balance arms with adjustable weights thereon positioned at 90° with respect to each other and...
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3599475 |
APPARATUS FOR THE STUDY OF THERMAL CYCLING OF ELEMENTS PARTICULARLY NUCLEAR REACTOR FUEL ELEMENTS
The apparatus known as a "cycler" is made up of a gastight container in which a gas pressure can be maintained, a specimen-carrier fitted with thermocouples, a furnace surrounding said...
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3524354 |
TRACKING SYSTEM FOR MOVING OBJECTS
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3386031 |
Helicopter rotor blade trackers
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3039314 |
Lawn mower blade balance indicator
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2987924 |
Blade balancer
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2951542 |
Balance and tracking of rotor blades
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2913700 |
Supersonic deviation-measuring apparatus
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2804774 |
Rotor balance wheel
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