Patent ID: 8863382

Claim:
A method for making a rotor blade for a wind turbine, the method comprising: a. providing a first skin and a second skin, said first skin and said second skin each defining an inside surface, said first skin and said second skin each defining a leading edge portion and a trailing edge portion, said first skin and said second skin each having a longitudinal dimension; b. providing a first spar having a first spar base and a plurality of first ribs, said first spar base being elongated and having an elongated dimension, each of said first ribs extending in said elongated dimension; c. attaching said first spar base to said inside surface of said first skin, said elongated dimension of said first spar being generally parallel to said longitudinal dimension of said first skin; d. providing a second spar having a second spar base and a plurality of second ribs, said second spar base being elongated and having an elongated dimension, each of said second ribs extending in said elongated dimension; e. attaching said second spar base to said inside surface of said second skin, said elongated dimension of said second spar being generally parallel to said longitudinal dimension; f. attaching said first and said second skins one to the other by attaching one of said first ribs to a corresponding one of said second ribs and not attaching at least one of said first ribs to a corresponding one of said second ribs at a location along said first spar or said second spar.