Patent ID: 6447249
Filing Date: 2002-09-10
Classification: B64C,B64D

Abstract:
A rotorcraft rotor, comprising:a hub intended to be driven in rotation about an axis of the hub which is the axis of rotation of the rotor, at least three blades, each of which is connected to the hub by a connecting member which is substantially radial with respect to the axis of rotation, and an outer radial end of which is shaped as a clevis in which a corresponding blade has a root retained by two blade pins each passing through aligned bores in the clevis and the blade root, the two blade pins being substantially mutually parallel, at least one blade being foldable on one side of the rotorcraft and having at least one removable blade pin, so that withdrawal of said removable blade pin from the blade root and from the clevis of the connecting member allows the blade to be pivoted about the other blade pin, and an electrical connection installation comprising, for each blade, at least one electrical connecting cable connecting a first connector, carried by the hub and powered by at least one supply conductor, to a second connector fixed on the blade and connected to at least one electric conductor of an electric device for deicing or preventing the icing of said blade, wherein the connecting cable for at least one folding blade comprises a first length connecting said second connector on said folding blade to a first end, in an outer radial position, of a second length held on the corresponding connecting member of said connecting cable, said first length of which includes a part forming spare length and wound into an S-shape in a plane substantially perpendicular to the corresponding two blade pins around two reels each of which is mounted at an end of a respective one of the corresponding two blade pins so that withdrawal of at least one removable blade pin and of the corresponding reel releases at least a portion of said part forming spare length of said first length, allowing the blade to be folded back without disconnection at the second connector.