Stacking of rotor blades on centroids

US11125088B2 · kind B2 · utility

Assignee

• MTU Aero Engines AG · DE

Inventors

• Carsten Schoenhoff · Munich, DE
• Martin Pernleitner · Dachau, DE
• Klaus Wittig · Bobingen, DE
• Manfred Dopfer · Unterschleißheim, DE
• Marcus Woehler · Inning am Ammersee, DE
• Wilfrid Schuette · Oberhaching, DE
• Christoph Bichlmaier · Greifenberg, DE
• Rudolf Stanka · Rattenkirchen, DE
• Norman Cleesattel · Zorneding, DE

Key dates

• Filing date: Nov 30, 2016
• Grant date: Sep 21, 2021
• Expiry date: May 22, 2039

Classification

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

Abstract

A rotor blade for a gas turbine, in particular an aircraft gas turbine, having a blade root element and a stream deflection portion adjoining the blade root element (12) in the longitudinal direction of the blade (RR); respective centroids (24) of blade cross-sectional areas of the stream deflection portion residing on a common stacking axis (26). It is provided that, starting from a first centroid (24) of a first blade cross-sectional area adjoining the blade root element (12), the stacking axis (26) extend within a cone (28) whose apex resides within the first centroid (24), and whose cone height (KH) extends orthogonally to the plane of the blade cross-sectional area; the angle (β) of the cone (28) being greater than 0° and smaller than or equal to 4°; preferably greater than or equal to 0.5° and smaller than or equal to 2°.