Patent ID: 6752596
Filing Date: 2004-06-22
Classification: B64C,B64D

Abstract:
A rotary-wing aircraft rotor of the type comprising:a hub, designed to be driven in rotation about an axis of the hub which is the axis of rotation of the rotor, at least two blades, each of which is connected to the hub by a link member that is substantially radial with respect to the axis of rotation, and a radially outer end of which is shaped as a fork in which the corresponding blade has a root retained by two substantially mutually parallel blade pins each passing through aligned bores in the fork and the blade root and each retained on the fork by at least one first removable retaining member, at least one blade being foldable on one side of the rotary-wing aircraft rotor and having at least one removable blade pin so that removal of said removable pin from the blade root and from the fork of the link member, after removal of said at least one first removable retaining member holding said removable blade pin on said fork, allows the blade to pivot about the other pin which forms a blade pivot 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 electrically connected on the hub, to a second connector on the blade and connected to at least one electrical device on said blade, wherein the connecting cable for at least one foldable blade, comprises a first flexible section, of essentially cylindrical shape with a rounded cross section, connecting said second connector to a second section, held on the corresponding link member, of said connecting cable, whose first section comprises a releasable part which, when the blade is in the flight configuration, is held above said pivot pin by retaining means which are linked to the pivot pin and arranged in such a way that said releasable part of the first section of cable is manually releasable from said retaining means, said releasable part being manually released from said retaining means, said releasable part being manually released from said retaining means before said removable blade pin is removed, so that once said removable blade pin has been removed the folding of the blade by pivoting about said pivot pin causes the first section of cable to curve and move naturally in order to accommodate said folding without disconnecting at the second connector.