Patent ID: 8161727

Claim:
A braking device for, in a gas turbine engine, braking a turbine comprising a rotor driving a shaft and rotating with respect to a stator in the event of said shaft breaking, the braking device comprising: a first braking member provided with at least one abrasive element, the abrasive element of the first braking member extending in a radial direction perpendicular to an axis of the engine and being secured to an upstream radial flange of a stator support formed by an exhaust casing; and a second braking member comprising a ring-shaped element made of a material capable of being eroded by the abrasive element, the second braking member extending in the radial direction and being secured to a flange of the rotor at a rim at an outer periphery of the rotor, the rim being provided with an attachment device which attaches blades to the rotor, the flange being disposed downstream of the attachment device and radially above a hub of the rotor and a web of the rotor which connects the hub to the rim, a thickness of the hub being greater than a thickness of the web in a direction parallel to the axis of the gas turbine engine, wherein the two braking members come into contact with one another through axial displacement of the rotor once the shaft has broken such that the abrasive element of the first braking member erodes the ring-shaped element of the second braking member which extends in the radial direction.