| 摘要 |
A wind turbine rotor blade is provided. The rotor blade comprises a root portion located in a proximal region of the rotor blade and a tip portion connected to the root portion and located in a distal region of the rotor blade. A spar extends from the root portion to the tip portion. The spar is a unitary member at the root portion and separates into a primary spar and a sub-spar towards the tip region of the rotor blade. Each spar and sub-spar has a respective lifting surface of the rotor blade associated therewith, each lifting surface being distinct from each other lifting surface.
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