Title:
SYSTEM AND METHOD FOR CONTROLLING THE MODIFICATION OF THE PITCH OF THE BLADES OF A TURBINE ENGINE
Document Type and Number:
WIPO Patent Application WO/2022/200088
Kind Code:
A1
Abstract:
The invention relates to a system for controlling the modification of the pitch of the blades (13) of a fan of a turbine engine (10), in particular for an aircraft, the turbine engine (10) comprising blades (13) mounted radially in a drive shaft (11) and a setting device (14) configured to modify the pitch of the blades (0) on the basis of an axial force (F) applied to said setting device (14). The control system comprises a hydraulic actuator (3), a hydraulic pump (4), a connecting ring (5) connected mechanically to the hydraulic pump (4) such that the flow rate of the hydraulic pump (4) is proportional to the relative speed between the drive shaft (11) and the connecting ring (5), and a magnetic coupling device (6) designed to control the drive speed of the connecting ring (5) in order to control the pitch of the blades (13) independently of the speed of the drive shaft (11).
Inventors:
AURIOL JACQUES (FR)
Application Number:
PCT/EP2022/056441
Publication Date:
September 29, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
SAFRAN AIRCRAFT ENGINES (FR)
International Classes:
B64C11/38
Foreign References:
| FR2831225A1 | 2003-04-25 | |||
| US2699220A | 1955-01-11 | |||
| US20190136867A1 | 2019-05-09 | |||
| US1959631A | 1934-05-22 | |||
| FR2831225A1 | 2003-04-25 | |||
| US2699220A | 1955-01-11 | |||
| FR3036093A1 | 2016-11-18 |
Attorney, Agent or Firm:
ARGYMA (FR)
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