Patent ID: 7578654

Claim:
A rotorcraft rotor blade ( 1 ) including at least one tiltable trailing-edge flap ( 5 ), said flap ( 5 ) being suitable for pivoting about a virtual hinge axis (Y′) extending substantially along the span of said blade ( 1 ) and of said flap ( 5 ), said blade ( 1 ) including at least one main ball joint ( 30 ) provided with an inner cage ( 32 ) together with a first pin ( 31 ) and an outer cage ( 33 ), the front portion ( 33 ′) of said outer cage ( 33 ) of the main ball joint ( 30 ) being connected to a linear actuator ( 10 , 10 ′) arranged in said blade ( 1 ) and serving to pivot said flap ( 5 ), said first pin ( 31 ) of the main ball joint ( 30 ) being substantially perpendicular to said virtual hinge axis (Y′) about which said flap ( 5 ) pivots.