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1. (WO2018221597) COMPOSITE MATERIAL BLADE AND METHOD FOR PRODUCING COMPOSITE MATERIAL BLADE

Pub. No.:    WO/2018/221597    International Application No.:    PCT/JP2018/020780
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Thu May 31 01:59:59 CEST 2018
IPC: F01D 5/28
F01D 5/30
Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD.
三菱重工業株式会社
Inventors: OKABE, Ryoji
岡部 良次
NONAKA, Yoshinori
野中 吉紀
SHINDO, Kentaro
新藤 健太郎
KAMIYA, Masami
神谷 昌美
Title: COMPOSITE MATERIAL BLADE AND METHOD FOR PRODUCING COMPOSITE MATERIAL BLADE
Abstract:
The present invention minimizes decreases in strength in a blade root section when a composite material is used in a moving blade. Provided is a composite material blade (1) that is formed by layering composite material layers in which reinforcing fibers are impregnated with a resin and that comprises a blade root section (14) and a blade section (10) extending in the lengthwise direction from the blade root section (14). The composite material blade (1) additionally comprises: a first layered body (30) that extends in the lengthwise direction in the blade section (10) and that extends along a first inclination direction (A1) inclined in a direction intersecting the lengthwise direction in the blade root section (14); a second layered body (40) that extends along the lengthwise direction and is in contact with the first layered body (30) in the blade section (10) and that extends along a second inclination direction (B1) inclined toward a side in the opposite direction from the first inclination direction (A1) and separates from the first layered body (30) in the blade root section (14); and a third layered body (50) provided between the first layered body (30) and the second layered body (40) in the blade root section (14).