| 摘要 |
A propeller type wind motor arrangement having a blade mounting hub, a plurality of air foil blades, and blade receiving means for mounting the blades to the hub for pivotal movement about a longitudinal axis of the blades is provided with a governor for retaining the blades at a first high torque, relatively low tip speed ratio forming angle during motor start-up and at rotational speeds below a minimum normal operational speed, and for abruptly shifting said blades to a second high efficiency, relatively high tip speed ratio forming angle when said operational value is reached.
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