Abstract: A fan blade (26)comprises a root portion (36) and an aerofoil portion (38). The aerofoil portion (38) has a leading edge (44), a trailing edge (46) and a tip (48) remote from the root portion (36). A concave pressure surface (50) extends from the leading edge (44) to the trailing edge (46) and a convex suction surface (52) extends from the leading edge (44) to the trailing edge (46). A groove (54) is provided in the tip (48) of the aerofoil portion (38)between the leading edge (44) and the trailing edge (46) of the aerofoil portion (38). The groove (54) in the tip (48) of the aerofoil portion (38)is spaced from the leading edge (44) and is spaced from the trailing edge (46). The groove (54) in the tip (48) of the aerofoil portion (38) allows a natural flow of fluid from the concave pressure surface (50) to the convex suction surface (52) of the aerofoil portion (38). This reduces vibrations of the fan blade (26).

Abstract: A fan blade (26) comprises a root portion (36) and an aerofoil portion (38). The aerofoil portion (38) has a leading edge (44), a trailing edge (46) and a tip (48) remote from the root portion (36). A concave pressure surface (50) extends from the leading edge (44) to the trailing edge (46) and a convex suction surface (52) extends from the leading edge (44) to the trailing edge (46). A portion (54) of the tip (48) of the aerofoil portion (38) between the leading edge (44) and the trailing edge (46) of the aerofoil portion (38) is thinner than the remainder (56, 58) of the tip (48). The portion (54) of the tip (48) of the aerofoil portion (38) is spaced from the leading edge (44) and is spaced from the trailing edge (46). The portion (54) of the tip (48) of the aerofoil portion (38) has a recess such that the portion (54) of the tip (48) of the aerofoil portion (38) is thinner than the remainder (56,58) of the tip (48). The recess is arranged on the concave pressure surface (50) of the aerofoil portion (38).