patentstorm.us

Marine propeller drive

Patent Number: 8444391
Publication Date: 2013-05-21
Inventors: ;

A propeller drive for boats features a transition cone between the gearbox housing and the propeller hub(s). The propeller hub (that is closest to the gearbox housing) is smaller in cross-sectional dimension than the gearbox housing. The dimension of the front end of the transition cone corresponds to the cross-sectional dimension of the gearbox housing, and the dimension of the rear end of the transition cone corresponds to the cross-section dimension of the (closest) propeller hub. The ...

Hollow turbine blade

Patent Number: 8444390
Publication Date: 2013-05-21
Inventor:

A blade for a turbine engine made by the diffusion-bonding/superplastic-forming (DB/SPF) process has a hollow skin made of front and back panels 1, 3 and internal reinforcement in the form of webs 5 extending between the two faces or panels at an angle to the plane of the blade. The cavities are filled with viscoelastic damping filler 7. In order to allow the blade to deform more easily so that the filler can take up the strain, the webs are pre-buckled so as to ...

Multiple piece turbine rotor blade

Patent Number: 8444389
Publication Date: 2013-05-21
Inventors: ;

A multiple piece turbine rotor blade with a shell having an airfoil shape and secured between a spar and a platform with the spar including a tip end piece. a snap ring fits around the spar and abuts against the spar tip end piece on a top side and abuts against a shell on the bottom side so that the centrifugal loads from the shell is passed through the snap ring and into the spar and not through a tip cap dovetail slot and projection ...

System of counter-rotating propellers with a feathering device for propeller blades

Patent Number: 8444388
Publication Date: 2013-05-21
Inventor:

A system of counter-rotating propellers for an aircraft turbine engine including a first and a second propeller, each including a stalling control system for the blades, a rotating actuating mechanism for sliding an element to move the angle of attack of the blades, and a disengaging mechanism for rigidly fixing in rotation the rotating actuating mechanism. The system is designed so that when the disengaging mechanism is engaged, a relative rotation speed is created between the elements and ...

Seal plates for directing airflow through a turbine section of an engine and turbine sections

Patent Number: 8444387
Publication Date: 2013-05-21
Inventors: ; ; ; ;

A seal plate for directing an airflow includes a hub, main pumping vanes, and splitter vanes. The hub has a tubular section and an annular flange section flared outwardly relative to the tubular section to define a flow surface. The main pumping vanes are disposed circumferentially on the flow surface around the annular flange section and each has a canted section located radially inward relative to a straight section and aligned with a flow direction of the airflow. The straight section ...

Turbine blade with multiple near wall serpentine flow cooling

Patent Number: 8444386
Publication Date: 2013-05-21
Inventor:

An air cooled turbine blade with a number of multiple pass serpentine flow cooling circuits extending around the airfoil surface in which a first leg of each serpentine flow circuit is located against a hot wall surface and the second legs and even the third legs of the serpentine flow circuits being located inward from the first legs. The circuits include two-pass serpentine circuits in the leading edge and trailing edge region that discharge into collection cavities, and the mid-chord ...

Phase adjustment mechanism

Patent Number: 8444385
Publication Date: 2013-05-21
Inventor:

A variable transmission is described having a transmission mechanism and a phase adjustment mechanism. The transmission mechanism has supports that are movable toward or away from one another to vary the effective size of an effective cog. The phase adjustment mechanism has a differential type gear arrangement that creates a phase change to adjust the transmission mechanism. Another configuration is described which includes a subassembly with a phase adjustment mechanism for adjusting the ...

Rotor blade assembly and method for adjusting loading capability of rotor blade

Patent Number: 8444384
Publication Date: 2013-05-21
Inventor:

A rotor blade assembly and a method for adjusting a loading capability of a rotor blade are disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade further defines a span and a chord. The rotor blade assembly further includes a spoiler assembly operable to alter a flow past a surface of the rotor blade. The spoiler assembly is incrementally ...

Wind turbine with internal ram air turbine

Patent Number: 8444383
Publication Date: 2013-05-21
Inventor:

A wind turbine blade system that includes blades with an internal airflow path that extends within the blade from a location at the tip of the blade to a location near the base or root of the blade. A ram air turbine positioned inside each of the blades, along the airflow path, the ram air turbine being adapted for generate electricity, and thus the current output may then be connected to an electric load, so that air is ingested at the tip of the blade as each blade ...

Rotor hub for use with high-inertia blades

Patent Number: 8444382
Publication Date: 2013-05-21
Inventors: ; ;

A rotor hub has a yoke with radial arms allowing flapping of connected blades about a flap axis. A grip is rigidly attached to each blade, and a lead-lag bearing connects each grip to one of the arms, the bearing defining a lead-lag axis outboard of the flap axis. Each arm has a pair of straps located on opposite sides of the rotor plane for transferring centrifugal force from the blades to the central portion of the yoke. A pair of lead-lag dampers is provided for each grip, the dampers of ...

Gas turbine bucket with serpentine cooled platform and related method

Patent Number: 8444381
Publication Date: 2013-05-21
Inventor:

A cooling circuit for a turbine bucket having a shank, a platform and an airfoil. The cooling circuit includes a first cooling passage extending from an inlet located at a radially inward end of the shank and adapted to communicate with a turbine wheel-space, the first cooling passage, in use, supplying cooling air to a serpentine cooling circuit extending within and across at least one region of the platform. The serpentine cooling circuit connects with a separate internal cooling circuit ...

Cooled turbine airfoil fabricated from sheet material

Patent Number: 8439647
Publication Date: 2013-05-14
Inventor:

A turbine airfoil (20) fabricated as an assembly of U-channels (22A-E), each U-channel having a closed side formed by a cross wall (25), an open side (26) opposite the cross wall, and two side walls (27) extending from the cross wall to the open side. The U-channels are attached to each other in a parallel, closed-side to open-side sequence, forming a series of cooling channels (23) oriented span-wise (S) in the airfoil. A first of the U-channels ...

Engine blade with excessive leading edge loading

Patent Number: 8439646
Publication Date: 2013-05-14
Inventor:

A free end of a blade of a fluid flow machine has a skeleton line camber distribution having an excessive value to a relative skeleton line camber of at least α*=0.35 for a related running length of s*=0.1 in a blade profile flow line section between the free end and a blade section at 30% of a main flow path width from the free end. S* is a local running length relative to a total running length of the profile skeleton line and α* is an angular change of the skeleton line relative to a ...

High pressure turbine blade airfoil profile

Patent Number: 8439645
Publication Date: 2013-05-14
Inventor:

A two-stage high pressure turbine includes a second stage blade having an airfoil with a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil ...

Airfoil leading edge shape tailoring to reduce heat load

Patent Number: 8439644
Publication Date: 2013-05-14
Inventors: ;

An airfoil includes a leading edge surface that includes a non-continuous curvature distribution. A stagnation region of the airfoil includes a curvature larger than adjacent segments to reduce heat transfer into the airfoil. The reduced curvature in the stagnation region is surrounded by the adjacent segments with larger curvatures to tailor the airfoil surface to provide a desired balance between heat transfer properties and aerodynamic ...

Biformal platform turbine blade

Patent Number: 8439643
Publication Date: 2013-05-14
Inventor:

A turbine blade includes an airfoil and integral platform. The platform is biformally contoured in elevation to include bilaterally disposed elevated ridges and depressed troughs on opposite sides of the ...

Pump and pump impeller

Patent Number: 8439642
Publication Date: 2013-05-14
Inventors: ;

A pump assembly that includes a pump housing defining an inlet for receiving fluid to be pumped and an outlet for discharging fluid. A rotatable impeller operatively coupled to a drive motor includes a plurality of vane structures integrally formed with a shroud. Each vane structure includes a curved, axial vane segment extending axially from the shroud. A compound, multi-step auxiliary vane extends transversely from each axial vane segment. The auxiliary vane or wing includes at least ...

Flow driven engine

Patent Number: 8439641
Publication Date: 2013-05-14
Inventors: ; ;

A system for converting between fluid movement, such as wind, and mechanical rotation is disclosed. The system includes a support which is rotatable about a first axis orthogonal to the direction of fluid movement and at least one panel mounted on the support for rotation about a said axis. The panel includes a matrix of flaps (elementary panels) mounted on the panel framework for rotation about a multiple secondary axes; and retaining hardware serving to resist rotation of the said flaps ...

Propeller blade pitch control system

Patent Number: 8439640
Publication Date: 2013-05-14
Inventors: ;

A propeller blade pitch control system includes a propeller hub for mounting at least one propeller blade, and a propeller shaft which rotates about an axis to rotationally drive the propeller hub. A pitch change yoke located within the propeller hub is configured to change a pitch of the at least one propeller blade in response to hydraulic fluid flow to a pitch change actuator. A propeller gearbox includes a first, rear end and a second, forward end located between the first, rear end and ...

Filter system for blade outer air seal

Patent Number: 8439639
Publication Date: 2013-05-14
Inventors: ; ;

A gas turbine engine component having a filter mounted adjacent an impingement cavity to filter particles out of a secondary cooling airflow outboard of a cooling channel in communication with the secondary cooling ...

Blade pitch controller, wind turbine generator, and method of controlling blade pitch

Patent Number: 8439638
Publication Date: 2013-05-14
Inventor:

A hydraulic cylinder is coupled to blades of a wind turbine generator and actuated to change a pitch angle of the blade. A variable displacement hydraulic pump supplies hydraulic oil to the hydraulic cylinder, and a discharge pressure of the pump does not follow a load pressure. When the discharge pressure of the hydraulic pump becomes a set pressure, a pressure control valve is opened to change a discharge amount of the hydraulic pump, and to make the discharge pressure of the hydraulic ...

Turbine blade including mistake proof feature

Patent Number: 8435008
Publication Date: 2013-05-07
Inventors: ; ;

A turbine blade includes a platform, an airfoil located on one side of the platform, and a base located on an opposite side of the platform. The base includes an attachment portion that is receivable in a blade retention slot of a turbine disk and a shelf located outside the turbine disk. The shelf includes a mistake proof feature that projects from an outer surface of the ...

Hybrid turbomachinery component for a gas turbine engine

Patent Number: 8435007
Publication Date: 2013-05-07
Inventor:

The present invention provides a hybrid turbomachinery component for use in a gas turbine engine. The hybrid turbomachinery component may be operative to direct the working fluid of the gas turbine engine and/or addi energy to the working fluid and/or extract energy from the working fluid. One or more portions of the hybrid turbomachinery component are made from one material, and other portions of the hybrid turbomachinery component are made from another ...

Fan

Patent Number: 8435006
Publication Date: 2013-05-07
Inventors: ;

A fan is disclosed herein. The fan includes a hub portion operable to rotate about an axis. The hub portion extends along the axis between forward and aft ends. The fan also includes at least one platform operably fixed with the hub portion. The at least one platform at least partially encircles the axis. The fan also includes at least one airfoil extending from the at least one platform radially outward relative to the axis between a base and a tip. The at least one platform terminates at ...

Manufacturing method of impeller

Patent Number: 8435005
Publication Date: 2013-05-07
Inventors: ;

A manufacturing method of an impeller includes forming a plurality of blades integrally on a blade attachment surface of one of a disc and a cover, placing the cover on a floor so as to face up the blade attachment surface of the cover, disposing the disc on the cover so as to face down the blade attachment surface of the disc, and bonding the plurality of blades to the blade attachment surface of the other of the disc and the cover which is not formed integrally with the plurality of ...

Turbine blade with tip rail cooling

Patent Number: 8435004
Publication Date: 2013-05-07
Inventor:

A turbine rotor blade with a squealer pocket formed by tip rails on the blade tip. A row of tip cooling holes extend along an inner side of the tip rails on the pressure side and the suction side to provide cooling for the blade tip and limit leakage flow across the blade tip gap. A number of vortex flow blockers are positioned within the squealer pocket and extend from the tip rails and into the squealer pocket beyond the tip cooling holes to block any formation of vortex flow from the ...

Apparatus for preventing ice accretion

Patent Number: 8435003
Publication Date: 2013-05-07
Inventors: ;

Aerofoils (22) of a gas turbine engine are provided with a coating (34) or filler (44) of viscoelastic material. As ice accretes on the aerofoils (22) during operation, the resulting aerodynamic stability imbalance induces vibration in the aerofoils (22). The viscoelastic material (34, 44) damps this vibration, and in so doing generates heat, which melts the ice away from the aerofoils (22). Heat-conducting members conduct the heat to regions ...

Helicopter vibration control system and rotating assembly rotary forces generators for canceling vibrations

Patent Number: 8435002
Publication Date: 2013-05-07
Inventors: ;

A rotary blade rotating hub mounted rotating assembly vibration control system including a first imbalance mass concentration rotor, a second imbalance mass concentration rotor, a third imbalance mass concentration rotor, and a fourth imbalance mass concentration rotor. The first imbalance mass concentration rotor has a first imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The second imbalance mass concentration rotor has a ...

Pitch drive apparatus of wind generator and wind generator

Patent Number: 8430639
Publication Date: 2013-04-30
Inventor:

A pitch drive apparatus of a wind generator is made with a simple structure, and the wind generator is capable of preventing reliability of the pitch drive apparatus from being deteriorated. The wind generator includes a wind turbine rotor blade having a blade root mounted so as to be turnable around an axis center O with respect to a rotor head, and a pitch drive apparatus for turning and driving the wind turbine rotor blade around the axis center O to change a pitch angle thereof. The ...

Noise reducer for rotor blade in wind turbine

Patent Number: 8430638
Publication Date: 2013-04-30
Inventors: ; ;

A noise reducer for a rotor blade of a wind turbine and a rotor blade assembly are disclosed. The rotor blade assembly includes a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge and a trailing edge each extending between a tip and a root. The rotor blade further defines a span and a chord. The rotor blade assembly further includes a noise reducer configured on the rotor blade. The noise reducer includes a plurality of rods each having a body ...

Semi-rigid wind blade

Patent Number: 8430637
Publication Date: 2013-04-30
Inventor:

An airfoil 11 for attachment to a hub 13 of a windmill 15 or other turbomachine, the airfoil 11 comprises a leading rod 17 and a trailing rod 27, the leading rod 17 and trailing rod 27 preferably are flexible and able to deflect in a direction opposite to that of the direction of rotation, the leading rod 17 having a first end 19 and a second end 21, the first end 19 secured by a leading rod mount 23 ...

Wind turbine rotor assembly

Patent Number: 8430636
Publication Date: 2013-04-30
Inventors: ;

A rotor assembly for a wind turbine including at least one blade adapted to automatically adjust its shape as a function of rotational speed to create an efficient fluid dynamic profile over a wide range of wind conditions and rotational speeds. The rotor assembly includes at least one blade configured to respond to rotation induced forces to automatically bend in a manner to optimize its wind ...

Mounting apparatus for fan

Patent Number: 8430635
Publication Date: 2013-04-30
Inventor:

A mounting apparatus for mounting a system fan and an exterior fan to a chassis includes a mounting bracket and a plurality of connecting members. The mounting bracket includes a rectangular hollow frame and x-shaped spoke fixed in the rectangular hollow frame. Each of the connecting members includes a first connecting portion and a second connecting portion extending from an end of the first connecting portion. The system fan is secured to the chassis by the first connecting portion each ...

System and method for improving wind turbine efficiency by adjusting blade pitch in response to localized wind speed

Patent Number: 8430634
Publication Date: 2013-04-30
Inventor:

A wind turbine for generating electrical power, the turbine having a rotor assembly comprising a hub, a rim and a plurality of blade members extending between the hub and rim, and at least two anemometers mounted at stationary locations relative to the rotor assembly or on the rotor assembly itself, wherein the pitch of individual blade members is adjustable in response to differences in wind speed detected by the anemometers as the rotor assembly ...

Blade extension for rotor blade in wind turbine

Patent Number: 8430633
Publication Date: 2013-04-30
Inventors: ; ;

A blade extension for a rotor blade and a rotor blade assembly for a wind turbine are disclosed. The rotor blade assembly includes a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge each extending in a generally span-wise direction between a tip and a root. At least one of the leading edge or the trailing edge has a modified aerodynamic contour. The rotor blade assembly further includes a blade extension including a first ...

System and method for pitching a rotor blade in a wind turbine

Patent Number: 8430632
Publication Date: 2013-04-30
Inventor:

A system and method for pitching a rotor blade in a wind turbine are disclosed. The method includes collecting in an individual pitch controller for the rotor blade a pitch offset angle relative to a collective pitch angle. The method further includes determining a synchronized pitch offset angle. The method further includes, after an emergency condition occurs, pitching the rotor blade towards the synchronized pitch offset ...

Wind turbine blade with lightning receptor and method for protecting the surface of a wind turbine blade

Patent Number: 8430631
Publication Date: 2013-04-30
Inventor:

A wind turbine blade has at least one lightning receptor, wherein at least part of a surface of the wind turbine blade close to the lightning receptor is covered by a protective layer having electrical and thermal insulating material. Moreover, a method for protecting the surface of a wind turbine blade close to a lightning protector against temperature increase resulting from lightning impact is disclosed. At least part of the surface of the wind turbine blade is covered with a protective ...