Mtu Motoren-Und Turbinen-Union Munchen Gmbh

Mtu Motoren-Und Turbinen-Union Muenchen, Gmbh

Mtu Aero Engines Ag

Josef Eichner

Wilhelm Hoffmueller

Franz Prieschl

Axel Rossmann

Thomas Uihlein

Vitalis Mairhanser

Wilhelm Hoffmuller

Andreas Hoelzel

Christian Roth

Robert Sigl

Mike Mosbacher

An adjustable guide vane for a compressor, in particular a high-pressure compressor, of a gas turbine, in particular an aircraft gas turbine is described, the vane comprising a radially outer bearing section, a radially inner bearing section, and a vane section, which extends in the radial direction between the outer bearing section and the inner bearing section, wherein the outer and the inner bearing sections are designed in such a way that the adjustable guide vane can be taken up rotatably about a vane axis in the compressor, and wherein the radially inner bearing section is configured like a journal (cone-shaped) and has a lateral surface that is formed circumferentially about the vane axis, the lateral surface being of convex shape. In this way, it is provided that the radius of curvature of the convex lateral surface is at least double the maximum diameter of the bearing section.

Adjustable guide vane with convexly shaped, radially inner storage section for a gas turbine, in particular an aircraft gas turbine

Manufacturing process and arrangement for manufacturing brush-type seals

A metallic alloy part having a bonded coating that includes dispersed hard-material particles embedded in a metal matrix, composed of a eutectic solder whose alloy elements include at least the base metal of the metallic alloy part. The solder is formed by fusion bonding on the metallic alloy part, a precoating composed of sequential layers of the elemental components of the solder applied on the metal part or on the hard-material particles. The composition and disposition of the various layers are graduated such that the melting points of the elemental solder components increase towards the outermost layer.

Method of manufacturing a metallic component or substrate with bonded

A foil intermediate layer is arranged between machine parts forming a joint to protect the machine parts against fretting corrosion. The foil intermediate layer includes at least two foils or plies of which the respective inner contact surfaces contacting each other, have a lower coefficeint of friction and a higher resistance to wear and abrasion, than the respective outer surfaces of the foils or plies contacting the joint forming surfaces of the machine parts. Thus, relative motion between the machine parts forming the joint under oscillating loads or vibrations, is transmitted to the easily gliding wear resistant contact surfaces of the plies so that the machine parts are protected from fretting corrosion, whereby their operating lifetime is increased.

Foil insert in a joint between machine components

The rotor of an axial-flow compressor with means for sealing the rotor blade tips relative to a casing wall provided with a coating is to be capable of abrasion but at the same time also low in wear. The present invention resolves these contradicting requirements for the coating on the casing in that individual blades, arranged between normally contoured, unshrouded rotor blades, are widened at their tips and reinforced with a radially outer layer, the material of which is matched to that of the coating. This will enable the coating to be subjected to less wear and to offer more resistance to erosion than heretobefore.

Rotor of a compressor, more particularly of an axial-flow compressor

Growing community of inventors

Scheyern, Germany

Josef Eichner