MAIN ROTOR BLADE AND HELICOPTER - NAT RES & DEVELOPMENT AGENCY JAPAN AEROSPACE EXPLORATION AGENCY

Title:

MAIN ROTOR BLADE AND HELICOPTER

Document Type and Number:

Japanese Patent JP2018184079

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a main rotor blade that can reduce a coefficient of resistance in high-speed forward flight of a helicopter with a main blade type or the like and can be controlled readily, and to provide a helicopter including a main rotor blade like that.SOLUTION: A main rotor blade 1 for a high-speed helicopter includes: a blade root part 10 with a length of 30% or more of rotor radius R; and a blade body 20 continuing to the blade root part 10. In the main rotor blade 1, the blade root part 10 preferably has a cross-sectional shape that satisfies (x/a)+(y/b)=1 and a>b, where m represents any number, x represents a chord length direction and y represents a blade thickness direction.SELECTED DRAWING: Figure 1

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Inventors:

SUGIURA MASAHIKO
TANABE YASUTADA
KOBIKI NOBORU
AOYAMA TAKESHI

Application Number:

JP2017086872A

Publication Date:

November 22, 2018

Filing Date:

April 26, 2017

Export Citation:

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Assignee:

NAT RES & DEVELOPMENT AGENCY JAPAN AEROSPACE EXPLORATION AGENCY

International Classes:

B64C27/467; B64C27/473

Attorney, Agent or Firm:

Junichi Omori
Mitsuru Takahashi
Teppei Nakamura
Ori Akira
Masayoshi Sekine
Ayako Kaneko
Shintaro Kanayama
Chiba Ayako
Shiraka Tomohisa

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