B - Operations – Transporting – 64 – C
Patent
B - Operations, Transporting
64
C
B64C 27/46 (2006.01) B29D 99/00 (2010.01) B29C 45/14 (2006.01) B29C 70/34 (2006.01) B29C 70/72 (2006.01) B64C 11/22 (2006.01) B64C 27/473 (2006.01) B29D 31/00 (2006.01)
Patent
CA 2111887
"BLADE MADE OF THERMOPLASTIC COMPOSITE, IN PARTICULAR FOR DUCTED TAIL ROTOR OF A HELICOPTER, AND ITS METHOD OF MANUFACTURE WITH INJECTION STEP" EUROCOPTER FRANCE Invention of: AUBRY Jacques COFFY René ABSTRACT The blade has its lower-surface and upper-surface skins of its shell, its front and rear filling bodies and its spar made of a composite material having the same thermoplastic matrix, preferably made of PEEK, reinforced preferably with carbon fibres. The spar is extended outside the shell by an integrated rooting part with linkage attachment, in a loop or laminate, in the same thermoplastic composite. The method consists in assembling the spar with the skins, after manufacturing these components in the form of prefabricated elementary pieces, by injecting under pressure a fluidized thermoplastic composite with short reinforcing fibres moulding the filling bodies. Figure 3.
Aubry Jacques Antoine
Coffy Rene Louis
Eurocopter France
Goudreau Gage Dubuc
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