Flow-straightener vane for counter-torque device with ducted rotor and ducted flow-straightening stator, for helicopter
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United States of America Patent
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-
Oct 3, 1995
Grant Date -
N/A
app pub date -
Sep 1, 1994
filing date -
May 4, 1994
priority date (Note) -
In Force
status (Latency Note)
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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.
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