Mtu Aero Engines Ag

Mtu Aero Engines Gmbh

Joseph Tomsik

Bernhard Woehrl

Klaus-Dieter Tartsch

Guenter Albrecht

An inner ring () for an annular guide vane assembly () of a turbomachine, which inner ring enables variable guide vanes () to be rotatably supported is provided. The inner ring () includes a first and a second securing ring () which are connected together by at least one securing element () extending axially with respect to a centerline (M) of the inner ring (). The at least one securing element () includes a vane bearing () which projects radially with respect to the centerline (M) and which corresponds to an associated guide vane () and is adapted for rotatably supporting the same. A method for manufacturing an annular guide vane assembly () of a turbomachine using such an inner ring () is also provided.

Inner ring for an annular guide vane assembly of a turbomachine

A compressor in a multi-stage axial form of construction, with a rotor which is mounted overhung and includes a plurality of moving-blade rings on blade carriers connected to one another, and with a blade arrangement, in which the moving-blade ring of the first stage forms the blade cascade arranged furthest upstream. At least one of the rotating blade carriers is produced in an MMC form of construction, that is to say as a metal component fiber-reinforced at least in regions, and the rotary bearing absorbing the large part of the radial loads occurring on the rotor has a predetermined breaking point which, when a defined radial load is exceeded, allows a radial shift of the rotor, with the result that the latter brushes against the stator.

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Munich, Germany

Joseph Tomsik