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

US11892012B2 · kind B2 · utility

Assignee

• MTU Aero Engines AG · DE

Inventors

• Andreas Hoelzel · Herrsching am Ammersee, DE
• Christian Roth · Bietigheim-Bissingen, DE
• Franz Prieschl · Pfaffenhofen an der Ilm, DE
• Josef Eichner · Scheyern, DE
• Mike Mosbacher · Munich, DE
• Vitalis Mairhanser · Sigmertshausen, DE

Key dates

• Filing date: Nov 6, 2022
• Grant date: Feb 6, 2024
• Expiry date: Nov 6, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

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.