Patent ID: 8061994

Claim:
A rotorcraft rotor blade ( 1 ) having a blade root ( 1 ′) and a free end remote from said blade root ( 1 ′), said blade ( 1 ) being at least provided with a main spar ( 2 ) laid flat on a suction-side face ( 3 ) and a pressure-side face ( 4 ) of the blade ( 1 ), said spar ( 2 ) being secured to an attachment fitting ( 5 ) at said blade root ( 1 ′), wherein said attachment fitting ( 5 ) comprises first and second horizontal fastener bushings ( 10 , 20 ), said first and second fastener bushings ( 10 , 20 ) being firstly perpendicular to the span of the blade ( 1 ) and secondly substantially perpendicular to an elevation direction (Z), said elevation direction being perpendicular to said span and to the plane of rotation of the blade when said blade is rotated by said rotor.