Mtu Aero Engines Gmbh

Mtu Aero Engines Ag

Deutsches Zentrum Fur Luft-und Raumfahrt E.v.

Alexander Hergt

Sergio Elorza Gomez

Tim Schneider

Ulrich Siller

Robert Meyer

Ralf-Dietmar Baier

A blade group arrangement for a turbomachine in order to form a blade-row group, whereby a front blade and a rear blade each form an overlapping area that has a contraction ratio of at least 1.2, and it also relates to a turbomachine having such a contraction ratio between a front blade and a rear blade.

Blade group arrangement as well as turbomachine

The turbomachine has a ring of radial blades which are connected to an annular end wall. Situated on the end wall upstream of each blade is a deflector wedge with two divergent guide surfaces. The deflector wedge generates pressure-side and suction-side vortices of which the vortices caused by the blade cascade are altered such that the transverse flow and backflow areas on the blade are reduced, and therefore the edge zone losses are decreased.

Turbomachine with axial compression or expansion

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Bonn, Germany

Alexander Hergt