Volumetric geometry reconstruction of turbine blades for aircraft engines

Authors:
David Großmann;Bert Jüttler
Affiliations:
MTU Aero Engines GmbH, Munich, Germany;Institute of Applied Geometry, Johannes Kepler University, Linz, Austria
Venue:
Proceedings of the 7th international conference on Curves and Surfaces
Year:
2010

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Abstract

We present a framework for generating a trivariate B-spline parametrization of turbine blades from measurement data generated by optical scanners. This new representation replaces the standard patch-based representation of industrial blade designs. In a first step, the blade surface is represented by a smoothly varying family of B-spline curves. In a second step, the blade is parametrized by a trivariate B-spline volume. The resulting model is suitable for numerical simulation via isogeometric analysis, as well as for a fully automatic structured mesh generation with standard finite elements. We focus on the industrial applicability of the framework, by using standard turbine blade features throughout the process.