Invention Grant
- Patent Title: Blade for a helicopter anti-torque device
- Patent Title (中): 用于直升机防扭矩装置的刀片
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Application No.: US13314258Application Date: 2011-12-08
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Publication No.: US08974189B2Publication Date: 2015-03-10
- Inventor: Marc Gervais , Benoit Gresle , Sébastien Finck , Laurent Sudre
- Applicant: Marc Gervais , Benoit Gresle , Sébastien Finck , Laurent Sudre
- Applicant Address: FR Marignane Cedex
- Assignee: Airbus Helicopters
- Current Assignee: Airbus Helicopters
- Current Assignee Address: FR Marignane Cedex
- Agency: Brooks Kushman P.C.
- Priority: FR1004891 20101215
- Main IPC: B64C11/16
- IPC: B64C11/16 ; B64C11/18 ; B64C27/82

Abstract:
A blade (1) for a tail anti-torque device of a helicopter, said device comprising a ducted rotor (13). The blade (1) has an assembly of sections, a leading edge (2) and a trailing edge (3); a stacking line (4) of the profiles extending at a distance lying in the range 25% to 50% of the chord (C). The stacking line (4) presents a shape that is curved having successively from the root (5) to the end (6) of the blade a back sweep, a forward sweep, and a last back sweep; and a chord (C) that becomes larger going towards the end (6) of the blade (1) over at least the end profile (1a).
Public/Granted literature
- US20120195767A1 BLADE FOR A HELICOPTER ANTI-TORQUE DEVICE Public/Granted day:2012-08-02
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