| 摘要 |
<p>A turbine blade 1 for a water current e.g. tidal turbine or a wind turbine is manufactured by shaping and curing first and second blade shells 2, 3. A spar 7, 8 is installed in the first shell 2, and the internal volume of the blade is partially filled with foam sheets 9. A volume of a foam forming substance is provided in voids 12 between the foam sheets or the spar and an inner surface of the shells before fitting the second shell 3 to the first shell 2 to enclose the spar and foam sheets and the assembled blade is cured. This method ensures that the blade is fully filled with foam, but without the need to machine the foam sheets to the precise shape of the blade cavity.</p> |
