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Patent Searching and Data


Title:
ANTI-TORQUE ROTOR FOR A HELICOPTER
Document Type and Number:
WIPO Patent Application WO/2020/260979
Kind Code:
A8
Abstract:
An anti-torque rotor (4) is described comprising: a mast (6) rotatable about a first axis (A); a plurality of blades (8) hinged on the mast (6) and rotatable about respective second axes (B) to vary the respective angles of attack; a control element (16) sliding along the first axis (A) with respect to the mast (6), rotatable with the mast (6) and connected to the blades (8) to cause the rotation about the second axes (B); a control mechanism (10), axially sliding and angularly fixed with respect to the mast (6); and a connection element (17) interposed between the control mechanism (10) and the control element (16), sliding integrally with the control mechanism (10) along the mast (6); the control mechanism (10) comprises a first and a second rod (60, 61); the rotor (4) comprises a coupling (70), which is configured to enable/prevent rotation of the second rod (61) with respect to the first rod (60) when the torque exerted by the first connection element (17) on the second rod (61) about the first axis (A) is greater/less than a threshold value in the event of failure of the connection element (17).

Inventors:
DELLI PAOLI, Michele (Divisione ElicotteriVia Giovanni Agusta, 52, Frazione Cascina Costa Samarate, IT)
NANNONI, Fabio (Divisione ElicotteriVia Giovanni Agusta, 52, Frazione Cascina Costa Samarate, IT)
VANNI, Roberto (Divisione ElicotteriVia Giovanni Agusta, 52, Frazione Cascina Costa Samarate, IT)
Application Number:
IB2020/054976
Publication Date:
April 08, 2021
Filing Date:
May 26, 2020
Export Citation:
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Assignee:
LEONARDO S.P.A. (Piazza Monte Grappa 4, Roma, IT)
International Classes:
B64C27/82; B64C27/59
Attorney, Agent or Firm:
DI SCIUVA, Michele et al. (Via Viotti 9, Torino, IT)
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