Variable-pitch multi-blade propeller having individually...

Details Variable-pitch multi-blade propeller having individually... Variable-pitch multi-blade propeller having individually...

B - Operations, Transporting

64

C

244/15, 26/150

B64C 27/45 (2006.01) B29D 99/00 (2010.01) B64C 11/26 (2006.01) B64C 27/473 (2006.01) B64C 27/82 (2006.01) F01D 5/28 (2006.01)

Patent

CA 1264313

"Variable-pitch multi-blade propeller incorporating individually dismountable blades made of composite materials, process for manufacturing such blades and blades thus produced" ABSTRACT OF THE DISCLOSURE Each blade is fixed to the hub by the root part of the spar, arranged in the form of a loop surrounding a connection element bolted on the hub, with the interposition of rigid rings by a pin simultaneously fixing the hub on a drive sleeve transmitting thereto the driving torque of the central shaft. The hub comprises two coaxial cylindrical walls in each of which is pierced, for each blade, a circular opening in which the member for controlling the angle of attack which is fast with the blade root is mounted to rotate via self-lubricating rings. The invention is particularly applicable to helicopters.

449257

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