Title:
ROTARY WING
Document Type and Number:
WIPO Patent Application WO/2023/149391
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a rotary wing that is excellent in light weight, rigidity, fatigue characteristics, and dimensional accuracy, and in particular, has excellent fatigue characteristics, that is, durability, the rotary wing including a following component [A] that constitutes at least a skin, which is the surface layer of the rotary wing, and a following component [B] that constitutes a core, which is the of the skin, the component [B] being the rotary wing enclosed in the component [A] at least in a cross section at the center of the distance between the central axis during rotation and the tip of the rotary wing. The component [A] is a continuous fiber base material containing continuous reinforcing fibers and a matrix resin, the component [B] is a porous body containing reinforcing fibers and resin, the reinforcing fibers have a mass-average fiber length of 1-15 mm, and voids are formed by bonding the reinforcing fibers through the resin.
Inventors:
MITSUTSUJI YUKI (JP)
HASEGAWA WATARU (JP)
HIRANO NORIYUKI (JP)
HASEGAWA WATARU (JP)
HIRANO NORIYUKI (JP)
Application Number:
PCT/JP2023/002834
Publication Date:
August 10, 2023
Filing Date:
January 30, 2023
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B64C1/00; B29C70/06; B29C70/42; B29C70/68; B64C11/22; F03D1/06
Domestic Patent References:
| WO1989009336A1 | 1989-10-05 | |||
| WO2015029634A1 | 2015-03-05 |
Foreign References:
| JP4561344B2 | 2010-10-13 | |||
| JP2019059048A | 2019-04-18 | |||
| JP2002213387A | 2002-07-31 | |||
| JP2017061600A | 2017-03-30 |
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