Mtu Motoren-und Turbinen-union Munchen Gmbh

Mtu Motoren-und Turbinen-union Muenchen, Gmbh

Wolfgang Diepolder

Siegfried Sikorski

Michael Schober

Bernhard Woehrl

Reinhold Schoenacher

A bearing arrangement is provided for rotors of jet engines with a bearing, which is mounted on a rotor carrier via a bearing carrier. In the event of failure, for example if the blade of a compressor rotor breaks, damage to or destruction of the rotor carrier or of the housing should be prevented by the fact that a breaking piece, which breaks under a defined load, is arranged concentrically between the rotor carrier and the bearing carrier. In this way, the transfer of extreme radial loads to the rotor carrier or to the rotor housing enclosing it is largely avoided, provided that the rotating member has not yet come to a standstill. The bearing arrangement is particularly of interest for turbo jet engines for aeroplanes, where for example, in the case of damage to a fan-rotor blade, the effect of a destructive force of a rotor running at high speed on neighboring housing areas can be reduced.

Bearing arrangement for rotating members

A vibration damper for rotor housings includes a rubber-elastic damping band (6) that encircles the outer circumference of the rotor housing (4) in a contour fitting manner. A clamping band (7) encircles the damping band (6) and secures the damping band to the housing (4). The clamping band is made of a material having a different modulus of elasticity than the material of the rotor housing, which achieves a detuning of the vibrational system including the rotor housing and the vibration damper as components. Such a detuning reduces the vibrational tendency of the rotor housing. Frictional rubbing between the damping band and the housing surface, and between the damping band and the clamping band effectively damps or dissipates the energy of any vibration that does occur. The clamping band includes a tension adjustment element that is adjustable and releasable so that the clamping band and the entire vibration damper may easily be removed from the housing for carrying out maintenance and inspection procedures.

Growing community of inventors

Freising, Germany

Wolfgang Diepolder