Metal working – Method of mechanical manufacture – Impeller making
Patent
1995-04-13
1997-04-15
Cuda, Irene
Metal working
Method of mechanical manufacture
Impeller making
29889, B23P 1500
Patent
active
056197977
ABSTRACT:
A method of manufacturing a vane for a counter torque device includes 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.
Arnaud Remy E.
Barquet Henri F.
Cuda Irene
Eurocopter France
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