General Electric Company

General Electric Renovables Espana, S.l.

Emily Jacob Palmer

Ulrich Werner Neumann

Joseph Lawrence Chacon

Ravi Chandra Kamarajugadda

Molly Christine Stieber

It is provided methods of installing a mechanical damper apparatus to an external surface of a tower of a wind turbine, the tower being in an erect state.

Methods of installing a mechanical damper apparatus

A lift system for a rotor blade of a wind turbine includes a lifting device having a structural frame body having a root end and a tip end. The root end supports a root cradle and the tip end supports a tip cradle. The root and tip cradles each have a profile that corresponds to at least one exterior surface of the rotor blade so as to receive and support at least a portion of the rotor blade. Due to a shape of the rotor blade, when the rotor blade is installed in the lifting device and lifted uptower, the rotor blade can experience an asymmetric loading. Accordingly, the lift system also includes a variable airflow assembly coupled to tip end of the lifting device. The variable airflow assembly includes at least one surface moveable between a plurality of positions having varying resistances so as to counteract the asymmetric loading.

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Chicago, IL, United States of America

Emily Jacob Palmer