Flow-straightener vane for counter-torque device with ducted rot

Details Flow-straightener vane for counter-torque device with ducted rot Flow-straightener vane for counter-torque device with ducted rot

1994-09-01

1995-10-03

Look, Edward K.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

4152112, 4152151, 244 1719, B64C 2720, F01D 900, F04D 2954

Patent

active

054546915

ABSTRACT:
The vane (9) comprises a hollow metal central part forming its main vane section (24) and the vane (9) root (17) and vane (9) tip (18) are each arranged as an end fitting (25, 28) equipped with at least one transverse tab (26, 29) for fastening the vane (9). The method of manufacture consists in extruding a hollow metal section of cross-section corresponding to the aerodynamic profile of the vane, in cutting off a section portion of length not substantially less than the span of the vane, and in arranging each end of the section portion as an end fitting with at least one fastening tab, either by machining and deformation of the ends of the section portion, or by fitting end fittings attached to its ends.

REFERENCES:
patent: 3594097 (1971-07-01), Mouille et al.
patent: 4585391 (1986-04-01), Vuillet et al.
patent: 4594761 (1986-06-01), Murphy
patent: 4626173 (1986-12-01), Mouille et al.
patent: 5131604 (1992-07-01), Yoerkie, Jr. et al.
patent: 5251847 (1993-10-01), Guimbal
patent: 5272869 (1993-12-01), Dawson
Proceedings of the nineteenth european rotorcraft forum, 14 Sep. 1993, "A new generation of fenestron fan-in-fin tail rotor on EC 135" by Vialle and Arnaud.

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