| 摘要 |
The present invention relates to a rotorcraft rotor blade ( 1 ) that comprises at least one tiltable trailing-edge flap ( 5 ), said flap ( 5 ) being suitable for pivoting about a virtual hinge axis (Y') extending substantially in the span direction of said blade ( 1 ) and of said flap ( 5 ). The blade ( 1 ) is remarkable in that the flap ( 5 ) is provided with at least two fastener ball joints ( 30 ), each provided with an inner cage ( 32 ) together with an outer cage ( 33 ) and a first pin ( 31 ) that is also secured to said flap ( 5 ), the first pins ( 31 ) of the fastener ball joints ( 30 ) being perpendicular to the virtual pivot axis (Y') of the flap ( 5 ). In addition, the blade ( 1 ) is provided at its trailing edge (BF) with a fastener tongue ( 20 ) provided with ball-receiving sockets ( 21 ), the outer cages ( 33 ) of the fastener ball joints ( 30 ) being secured to the ball-receiving sockets ( 21 ).
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