Abstract: There is provided a wind power installation azimuth or pitch drive having a travelling wave drive.

Abstract: The present invention concerns a wind power installation comprising a pod having at least one fluid-cooled component and a heat exchanger. To simplify transport and construction of a wind power installation with a heat exchanger and thus to eliminate or at least reduce sources of error in the wind power installation of the kind set forth in the opening part of this specification the heat exchanger is integrated into the external contour of the pod. In that respect the present invention is based on the realization that in that way when transporting and handling the pod, there is no need for any alterations worth mentioning, at the same time however the heat exchanger can also be installed upon assembly of the pod in the factory and can be tested for satisfactory functioning. That leads to a simplification in transporting and constructing the wind power installation and at the same time eliminates possible error sources.

Abstract: A pod of a wind power installation is provided having an aviation obstruction lighting arrangement. The aviation obstruction lighting arrangement includes a central light device which in the erected condition of the wind power installation is arranged on the pod on the top thereof, and two lateral light devices which in the erected condition of the wind power installation are arranged at mutually opposite sides of the pod.