| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress deformation of a blade for wind power generation to increase the size of the blade for wind power generation. <P>SOLUTION: The blade 5 used in a wind power generation device 1 includes: a root part 11; a blade body 12 which receives wind and obtains a rotary force; three webs 13 provided in the blade body 12; and girders 14 which connect the webs 13 and the blade body 12. The blade body 12 includes: a front side outer skin 12a and a rear side outer skin 12b which are divided into an upstream side and a downstream side and face each other; a nose portion 12c disposed at a front end portion in the rotational direction of the front side outer skin 12a and the rear side outer skin 12b; and a tail portion 12d disposed at a rear end portion in the rotational direction of the front side outer skin 12a and the rear side outer skin 12b. Further, the root part 11, the front side outer skin 12a, the rear side outer skin 12b and the webs 13 are formed with a PAN-based carbon fiber composite material, and the nose portiont 12c, the tail portion 12d and the girders 14 are formed with a pitch-type carbon fiber composite material. <P>COPYRIGHT: (C)2012,JPO&INPIT |
