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| Number | Title | Issue Date |
| 8439646 | Engine blade with excessive leading edge loading 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 a... | 05/14/2013 |
| 8439645 | High pressure turbine blade airfoil profile 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... | 05/14/2013 |
| 8419373 | Wind turbine blade, wind turbine generator equipped with wind turbine blade and method of designing wind turbine blade It is intended to provide a wind turbine blade with superior aerodynamic characteristics and rigidity, a wind turbine generator equipped with the wind turbine blade, and a method of designing the wind turbine blade. The wind turbine blade 1 is provided with a... | 04/16/2013 |
| 8419372 | Airfoil having reduced wake An airfoil of varying span-wise thickness comprising a suction side and a pressure side coupled together at a leading edge and a trailing edge, with the trailing edge comprising a plurality of spaced-apart wave-shaped projections. Exemplary embodiments provide airfo... | 04/16/2013 |
| 8419371 | Wind turbine blades with twisted and tapered tips A blade for a wind turbine includes a total backward twist of between approximately 6 degrees and approximately 15 degrees between an outer approximately 1 percent to approximately 10 percent of a rotor radius of the blade; and a total normalized chord change of bet... | 04/16/2013 |
| 8408877 | Wind turbine blades with twisted tips A blade for a wind turbine includes a total backward twist of between approximately 6 degrees and approximately 15 degrees between an outer approximately 1 percent to approximately 10 percent of a rotor radius of the blade. ... | 04/02/2013 |
| 8393870 | Turbine blade airfoil An airfoil comprises an external surface formed in substantial conformance with a plurality of cross sections. Each of the cross sections has an axial chord and an offset at a corresponding fractional span as set forth in Table 2. Each of the cross sections is descr... | 03/12/2013 |
| 8382438 | Blade of a turbomachine with enlarged peripheral profile depth A blade for an axial-flow turbomachine with a gap-side blade area I which transits into a free blade end and with a hub-side or casing-side blade area II, respectively. Blade 3 forms a flow line profile section with leading edge VK and trailing edge HK which ... | 02/26/2013 |
| 8356982 | Reversible system for dividing aerogenerator blades into several parts An aerogenerator blade assembly has a blade with a first side and a second side an insert member positioned therein and therebetween. The insert member has a first surface in toothed engagement with a toothed surface on an inner surface of the first side of the blad... | 01/22/2013 |
| 8328522 | Axial flow fan A fan or rotor design where the surface profile may be configured to desired dimensions particular to a given operating environment is disclosed. ... | 12/11/2012 |
| 8277192 | Turbine blade An airfoil profile is formed such that a passage width ratio, represented in a dimensionless manner, of an inter-blade passage width of vane root cross-section to an outlet throat width substantially monotonously decreases from a blade inlet toward a blade outlet. T... | 10/02/2012 |
| 8241000 | Wind turbine rotor blade and airfoil section The present invention includes a set of airfoils, U rails and V rails taken together to describe a blade for use with a horizontal axis wind turbine. The blade's design includes a maximum thickness higher than conventional blades employed for the same use thereby pr... | 08/14/2012 |
| 8215916 | Axial flow fan The axial flow fan includes a plurality of blades disposed around and rotating together with the rotation shaft, the blades each including a leading edge, a trailing edge, a leading edge portion proximate the leading edge, a trailing edge portion proximate the trail... | 07/10/2012 |
| 8182231 | Wind turbine with slender blade Wind turbine with a rotor blade relatively insensitive to turbulence because it is more slender than prior blades and is nevertheless able to generate sufficient lift by virtue of the fact that flow enhancing elements such as vortex generators combat flow separation... | 05/22/2012 |
| 8172539 | Wind turbine rotor blade joint A blade joint for joining a first blade segment and a second blade segment, each having an aerodynamic profile, in a rotor blade is disclosed. The blade joint includes a first joint segment and a second joint segment each having an outer surface, an inner surface, a... | 05/08/2012 |
| 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 |
| 8167567 | Gas turbine engine airfoil A rotor blade for a gas turbine engine includes an airfoil that extends in span between a root and a tip region. A leading edge and a trailing edge of the airfoil section extend between a chord line of the airfoil. A sweep angle is defined at the leading edge of the... | 05/01/2012 |
| 8162617 | Turbine blade with spar and shell A turbine blade with a spar and shell construction in which the spar and the shell are both secured within two platform halves. The spar and the shell each include outward extending ledges on the bottom ends that fit within grooves formed on the inner sides of the p... | 04/24/2012 |
| 8152472 | Blade structure for heat sink fans A fan blade for heat sink fans is provided. The fan blade includes a wheel hub and a plurality of blades which is disposed around the rim of the wheel hub. The surfaces of the blade fans are designed with protruding or recessing inhibiting part. The flow rate on the... | 04/10/2012 |
| 8142162 | Wind turbine blade An aerodynamic profile and a wind turbine comprising a wind turbine blade with reduced sensitivity towards surface irregularities are provided. The invention is mainly directed towards pitch-regulated wind turbines, which are operated at variable rotor speed and hav... | 03/27/2012 |
| 8128375 | Turbomachine blade that is cast with a local fattening of the section of the airfoil The monocrystalline turbomachine blade according to the invention that is cast and directionally solidified, is disclosed. The blade includes an airfoil with a leading edge, a pressure face, a suction face, a trailing edge, a skeleton and having a longitudinal axis,... | 03/06/2012 |
| 8118558 | Runner vane for axial-flow hydraulic machinery A camber line in a radial section of a runner vane has a curved part extending near the tip of the runner vane is convex toward the front surface of the runner vane. The runner vane is formed in a shape meeting a condition expressed by: ρs | 02/21/2012 |
| 8113786 | Stator vane profile optimization An airfoil for a stator vane having an uncoated profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I is provided. The profile is carried only to three decimal places wherein Z is a distance from a platform on which ... | 02/14/2012 |
| 8105042 | Intermediate-manufactured composite airfoil and methods for manufacturing An intermediate-manufactured composite airfoil includes first and second composite skins each having a plurality of fibers in a polymer matrix. A composite core is removably located between the first and second composite skins. The composite core includes a dry, thr... | 01/31/2012 |
| 8105044 | Compressor turbine blade airfoil profile A compressor turbine includes a series of compressor turbine blades each 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 ... | 01/31/2012 |
| 8105043 | HP turbine blade airfoil profile 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... | 01/31/2012 |
| 8100658 | Axial-flow fluid machine blade An axial-flow fluid machine blade which achieves reduction of the frictional loss of the blade and provision of a high surge-resistant property is provided. An axial-flow fluid machine blade 60 used for an axial-flow fluid machine includes a leading edge 6... | 01/24/2012 |
| 8096777 | Mixed flow turbine or radial turbine A mixed flow turbine or radial turbine suppresses a rapid increase in load applied on a leading edge of a blade, and can reduce incidence loss. The mixed flow turbine or radial turbine includes a hub, and a plurality of blades provided on an outer circumference surf... | 01/17/2012 |
| 8092185 | Impeller and cooling fan incorporating the same A cooling fan (10) includes a bottom plate (12) a top cover (14) covering the bottom plate, a sidewall (13) disposed between the bottom plate and the top cover, and an impeller (16) enclosed in a space formed between the bottom pla... | 01/10/2012 |
| 8092186 | Random pitch impeller for fuel pump A random pitch impeller for a fuel pump has number of blades. An incremental angle of the blades is set by the expression: Δθ | 01/10/2012 |
| 8083487 | Rotary airfoils and method for fabricating same A method of fabricating an airfoil is provided. The method includes fabricating at least one airfoil including a suction side and a pressure side coupled together at a leading edge and a trailing edge, wherein the airfoil includes a plurality of first and second cho... | 12/27/2011 |
| 8079818 | Method for manufacturing of a fibre reinforced laminate, use of a wrinkle-preventing material, wind turbine blade and wind turbine A method for manufacturing of a fiber reinforced laminate is provided. A part of the laminate is build up to a determined thickness. A layer of wrinkle-preventing material is placed on top of the partially completed laminate. The layer of wrinkle-preventing material... | 12/20/2011 |
| 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 electrical generator. In an embodiment, a rotor is responsive to wind ... | 12/06/2011 |
| 8061996 | Wind turbine blade planforms with twisted and tapered tips A blade for a wind turbine includes a total backward twist of between approximately 6 degrees and approximately 15 degrees between an outer approximately 1 percent to 10 percent of a rotor radius of the blade; and an approximate planform distribution within the foll... | 11/22/2011 |
| 8043064 | Fan and fan wheel thereof A fan and a fan wheel thereof are provided. The fan comprises the fan wheel and a fan cowl. The fan wheel comprises a hub and a plurality of blades. The hub can define an axial direction and a radial direction, and each of the blades has an axial length and a radial... | 10/25/2011 |
| 8038406 | Axial fan and blade design method for the same An axial fan which includes a hub portion having the rotational center thereof and blades arranged on the outer periphery of the hub portion is equipped with a thickness reinforcing portion which extends from the joint portion between the blade front edge portion of... | 10/18/2011 |
| 8016566 | High performance low noise rotorcraft blade aerodynamic design One embodiment of the present invention is a main rotor helicopter blade for generating higher lift with less drag and delaying stall at high Mach numbers. A cross-section of this blade includes aft camber. The difference between a chord line of the cross-section an... | 09/13/2011 |
| 7997872 | Fan blade The suction surface blade angle of a transonic fan blade, subject in use to a shock wave, progressively reduces along part of the suction surface, beginning at a position upstream of the shock wave position. The increased area variation at the location of the shock ... | 08/16/2011 |
| 7997874 | Wind turbine rotor blade joint A blade segment is disclosed for a rotor blade formed from a plurality of blade segments, the blade segment having a span and a chord. The blade segment includes a shell segment having a pressure side and a suction side extending between a leading edge and a trailin... | 08/16/2011 |
| 7985052 | Curved blade for wind turbines A curved blade for use on horizontal wind turbines, the blade comprising a substantially semicircular tip portion, a substantially semicircular counter-tip portion opposite the tip portion, and a body portion extending between the tip portion and the counter-tip por... | 07/26/2011 |
