Patent ID: 7976282

Claim:
A spar cap, comprising: a plurality of preform components configured to be affixed together in an end-to-end arrangement successively along a length of a rotor blade for forming a spar cap; wherein: said plurality of preform components each has a swept shape; said plurality of preform components each has a first end and a second end; said plurality of preform components are joined by mating said second end of a first preform component to said first end of a next preform component generally aligning along the length of the rotor blade; an angle of said first end is supplementary to an angle of said second end, wherein mating said second end of said first preform component with said first end of said next preform component comprises a scarf joint; and further comprising at least one pin, wherein said at least one pin extends through said first preform component and said next preform component forming said scarf joint.