11.
    发明专利
    未知

    公开(公告)号:DE3320685A1

    公开(公告)日:1983-12-22

    申请号:DE3320685

    申请日:1983-06-08

    Abstract: A blade feathering system for wind turbines includes a feather actuator (299), control means (330 and 335) operatively connected thereto and an adjustment means (340) operatively connected to the control means for selectively varying the rate of operation of the feather actuator for feathering the wind turbine blades (10 and 15) at a variable rate.

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