Flap hinge mechanism and method for manufacturing the same

摘要

Flap hinge mechanism (10) comprises a blade-secured portion (11) which is secured to blade (1), a flap-secured portion (12) which is secured to flap (2), and a coupling portion (13) which couples blade-secured portion (11) and flap-secured portion (12) so as to permit angular displacement. The blade-secured portion (11), coupling portion (13), and flap-secured portion (12) are formed of fibers which serve as composite material. The fibers of the blade-secured portion (11) and flap-secured portion (12) are impregnated with matrices, and the fibers of the coupling portion (13) are not impregnated with a matrix. Such constitution permits attainment of smooth flap motion in spite of large centrifugal forces, making achievement of thin, light designs possible.