| 摘要 |
<p>A water turbine for use in water flowing in a first direction D comprises a rotor rotatable about a first axis 6 substantially normal to the water flow. At least one hydrofoil 2 is supported by the rotor e.g. from a support disc 3. A track 11 is configured to engage the hydrofoil 2 so as to control the angle of the hydrofoil relative to the support 3. A guide vane 20 is attached to the track 11 to rotate the track about the first axis 6 into alignment with the first direction D, so that the hydrofoil 2 is properly adjusted for water flow from any direction. The track 11 may be circular and offset from the axis 6. The rotor and track are supported by a stationary framework 13.</p> |
