Lm Wind Power A/s

Blade Dynamics Limited

Jelmer Cnossen

Paul Damian Michael Todd

Manish Mukherjee

Afroz Akhtar

Christian Frank Andersen

Paul Todd

Andrea Avaldi

John Korsgaard

Chris Paul Swatton

Harry George James Fish

Rajkumar Sivanantham

The present invention relates to a wind turbine blade comprising an aerodynamic shell having an outer surface forming at least part of an exterior surface of the wind turbine blade and an inner surface. An access window extends through the shell. A panel is arranged within a recessed portion at the inner surface of the shell adjacent to the access window for closing the access window.

Wind turbine rotor blade with access window

A method for manufacturing a shelland, is disclosed. The method includes laying one or more layers of fibres, on a surface of a mouldto form at least a portion of a shell half structureand. A first paneldefined with noise reduction membersis positioned adjacent to the one or more layers of fibres on the surface of the mould. Further, resin is infused through the one or more layers of fiber and the first paneland is subsequently cured to obtain the shell half structureor, where the first panelwith noise reduction membersadheres to the shell half structureandupon curing the infused resin.

Method of manufacturing a shell of a wind turbine blade

A wind turbine blade comprising a plurality of spar components extending along the longitudinal axis and providing the main bending stiffness of the wind turbine blade a major principal axis defining a structural pitch angle of at least 1° with respect to a chord line, and including: one or more suction-side spar caps each having a centre line; one or more pressure-side spar caps each having a centre line; and one or more shear webs distributed around a central shear web line and at least one of which being connected to first spar caps, wherein at least one suction-side spar cap centre lines is arranged with a first chordwise distance to the central shear web line, and at least one pressure-side spar cap centre lines is arranged with a second, different, chordwise distance to the central shear web line.

Aeroelastic stable wind turbine blade

The present invention relates to a wind turbine blade () comprising an aerodynamic shell () having an outer surface () forming at least part of an exterior surface of the wind turbine blade and an inner surface (). An access window () extends through the shell (). A panel () is arranged within a recessed portion () at the inner surface of the shell adjacent to the access window () for closing the access window ().

An extendable wind turbine blade for being extended in length during operation thereof, the wind turbine blade having an exterior surface with a root region and an airfoil region and comprising a first blade segment including a first portion of the exterior surface, a second blade segment including a second portion of the exterior surface, and a connection mechanism connecting the blade segments, and being configured to bring the wind turbine blade to a retracted state, in which the portions of the exterior surface are flush and adjoining, when the wind turbine blade operates above a threshold rotational speed and to bring the wind turbine blade to an extended state, in which the portions of the exterior surface are disconnected and the blade length is at least 101% of the blade length in the retracted state, when the wind turbine blade operates below the threshold rotational speed.

Extendable wind turbine blade

The present invention relates to an access arrangement () of a wind turbine blade for accessing a hollow space within the blade. The access arrangement () comprises an access opening () provided in the blade shell member, a cover panel () for covering the access opening (), a sealing member () arranged between the cover panel () and the blade shell member, and one or more fasteners () for releasably fastening the cover panel () to the blade shell member. The present invention also relates to a wind turbine blade comprising the access arrangement ().

Growing community of inventors

Eastleigh, United Kingdom

Jelmer Cnossen