Title:
Attachment system
Document Type and Number:
Japanese Patent JP6121108
Kind Code:
B2
Abstract:
A mounting system is provided for mounting a blade (70) to a rotor body. The system has a pitch control mechanism including an anchor (76) and a pitch change rod (75) extending radially outwardly from the anchor to join to a base of the blade. The pitch control mechanism further includes a torque-transmitting formation (77a,77b) such that pitch-varying torque can be transmitted to the blade while allowing relative radial movement between the blade and the anchor. The system further has a primary bearing formation (80a,80b) which transmits blade centrifugal loads to the rotor body. The system further has a secondary bearing formation (81) which transmits pitch change mechanism centrifugal loads to the rotor body while accommodating rotation of the anchor and the rod during variation of the blade pitch. The mounting system further has a back-up retention formation (79a,79b) which, on failure of the primary bearing formation leading to outward radial movement of the blade relative to the anchor, activates to divert blade centrifugal loads through the secondary bearing formation to the rotor body.
Inventors:
Kenneth, Franklin, Yudal
Alexander, Bacheslavovich, Labrenco
Alexander, Bacheslavovich, Labrenco
Application Number:
JP2012134510A
Publication Date:
April 26, 2017
Filing Date:
June 14, 2012
Export Citation:
Assignee:
ROLLS-ROYCE PUBLIC LIMITED COMPANY
International Classes:
B64C11/06; F02C7/042; F02C9/22; F02C9/58; F02K3/062; F04D29/36
Domestic Patent References:
| JP11022743A | ||||
| JP50124011A |
Foreign References:
| US20100215499 | ||||
| EP0822137A2 | ||||
| GB546621A |
Attorney, Agent or Firm:
Hiroyuki Nagai
Hirohito Katsunuma
Katsuomi Isogai
Junpei Okada
Hideyuki Mori
Yukihiro Hotta
Hirohito Katsunuma
Katsuomi Isogai
Junpei Okada
Hideyuki Mori
Yukihiro Hotta