Rolls-royce Corporation

Jem Athing Rongong

Daniel Clark

Geoffrey R Tomlinson

Richard C Harvey

Bishakh Bhattacharya

A turbomachine including securing means that extend between the pressure wall and the suction surface and which includes an energy absorbing portion for absorbing energy after impact to the blade by a foreign object. The energy absorbing portion has a catch that provides the blade with an improved resistance to bursting.

Turbomachine blade

A turbomachine blade comprising a root portion and an aerofoil portion, the aerofoil portion having a leading edge, a trailing edge, a concave metal wall portion extending from the leading edge to the trailing edge and a convex metal wall portion extending from the leading edge to the trailing edge, the concave metal wall portion and the convex metal wall portion forming a continuous integral metal wall, the aerofoil portion having a hollow interior defined by at least one internal surface, the hollow interior of the aerofoil portion being at least partially filled with a vibration damping material that is separated from the metal wall portions by a thermally insulating material.

A turbomachine blade comprising a root portion and an aerofoil portion, the aerofoil portion having a leading edge, a trailing edge, a concave metal wall portion extending from the leading edge to the trailing edge and a convex metal wall portion extending from the leading edge to the trailing edge. The concave metal wall portion and the convex metal wall portion form a continuous integral metal wall. The aerofoil portion has a hollow interior defined by at least one internal surface and the hollow interior of the aerofoil portion is at least partially filled with a vibration damping and stiffening system that comprises a vibration damping material. The vibration damping material is bonded to the at least one internal surface and the vibration damping and stiffening system comprises a variation of material properties between the wall portions.

A vibration damping system ( ) wherein the system ( ) comprises a magnetism generating medium ( ) and a magnetism energy dissipating medium ( ) whereby, in use, vibration of the magnetism generating medium ( ) generates a magnetic field, the magnetism generating medium ( ) and the magnetism energy dissipating medium ( ) being so disposed with respect to each other that the magnetic field is then dissipated by the magnetism energy dissipating medium ( ) thereby damping the vibrations of the magnetism generating medium ( ).

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Stockport, United Kingdom

Jem Athing Rongong