Blade provided with a horizontally-wound spar, and a method...

Details Blade provided with a horizontally-wound spar, and a method... Blade provided with a horizontally-wound spar, and a method...

2008-06-24

2011-12-06

Andujar, Leonardo (Department: 2829)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Formed with main spar

C416S21900R, C264S339000, C264S241000

Reexamination Certificate

active

08070452

ABSTRACT:
The present invention relates to a rotorcraft blade (1) provided with a distributed spar (10) on a leading edge (4), a suction side (2), and a pressure side (3) of the blade, and the invention also relates to a method of fabricating such a spar. The blade is provided with a fastener insert (20) integrated in the blade root for the purpose of fastening the blade to a rotor, the fastener insert (20) comprising a horizontal shaft (21) perpendicular to the span of the blade and to an axis of rotation of said rotor, with the distributed spar (10) of the blade being wound in part about the horizontal shaft.

REFERENCES:
patent: 3923422 (1975-12-01), Ianniello et al.
patent: 4096012 (1978-06-01), Belko et al.
patent: 4460531 (1984-07-01), Harris et al.
patent: 4626173 (1986-12-01), Mouille et al.
patent: 5632602 (1997-05-01), Herrmann et al.
patent: 6893223 (2005-05-01), Roberts
patent: 2 186 380 (1974-11-01), None
patent: 2 362 750 (1978-03-01), None
patent: 2 262 966 (1993-07-01), None

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