Rolls-royce Corporation

Stuart Yeo

Peter Jeffrey Goodman

A vibration damper for a gas turbine engine has convergent friction surfaces and and is located radially inward of the platforms and of two adjacent turbine blades. The angle subtended by the friction surfaces and is smaller than that subtended by the angled faces and associated with the platforms and . The center of mass of the damper lies in a plane bisecting the angle subtended by the friction surfaces and . In use the damper is urged radially outwards by centrifugal force so that at least one of the friction surfaces and makes planar contact with at least one of the angled faces and . Vibrational energy is dissipated by the resultant sliding movement between the friction surfaces and and the angled faces and . A secondary vibration damping mechanism arises from the oscillation of the damper between the platforms and

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Stretton, United Kingdom

Stuart Yeo