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International Journal of Aerospace Engineering
Volume 2015, Article ID 431824, 11 pages
http://dx.doi.org/10.1155/2015/431824
Research Article

A Reconstruction Algorithm for Blade Surface Based on Less Measured Points

College of Mechanical Science and Engineering, Nanling Campus, Jilin University, Changchun 130025, China

Received 5 July 2015; Revised 14 October 2015; Accepted 19 October 2015

Academic Editor: Roger L. Davis

Copyright © 2015 Jia Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A reconstruction algorithm for blade surface from less measured points of section curves is given based on B-spline surface interpolation. The less measured points are divided into different segments by the key geometric points and throat points which are defined according to design concepts. The segmentations are performed by different fitting algorithms with consideration of curvature continuity as their boundary condition to avoid flow disturbance. Finally, a high-quality reconstruction surface model is obtained by using the B-spline curve meshes constructed by paired points. The advantage of this algorithm is the simplicity and effectivity reconstruction of blade surface to ensure the aerodynamic performance. Moreover, the obtained paired points can be regarded as measured points to measure and reconstruct the blade surface directly. Experimental results show that the reconstruction blade surface is suitable for precisely representing blade, evaluating machining accuracy, and analyzing machining allowance.