The blade geometry design process is integral to the development and advancement of compressors and turbines in gas turbines or aeroengines. An airfoil section design feature has been added to a previously developed open source parametric 3D blade design tool. The second derivative of the mean-line (related to the curvature) is controlled using B-splines to create the airfoils. This is analytically integrated twice to obtain the mean-line. A smooth thickness distribution is then added to the airfoil with two options either the Wennerstrom distribution or a quartic B-spline thickness distribution. B-splines have also been implemented to achieve customized airfoil leading and trailing edges. Geometry for a turbine, compressor, and transonic fan are presented along with a demonstration of the importance of airfoil smoothness.
Nemnem, A., & Turner, M. (2015). Smooth Curvature of Airfoils Meanline for a General Turbomachinery Geometry Generator. International Conference on Aerospace Sciences and Aviation Technology, 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015), 1-31. doi: 10.21608/asat.2015.23012
MLA
Ahmed F. Nemnem; Mark G. Turner. "Smooth Curvature of Airfoils Meanline for a General Turbomachinery Geometry Generator", International Conference on Aerospace Sciences and Aviation Technology, 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, 2015, 1-31. doi: 10.21608/asat.2015.23012
HARVARD
Nemnem, A., Turner, M. (2015). 'Smooth Curvature of Airfoils Meanline for a General Turbomachinery Geometry Generator', International Conference on Aerospace Sciences and Aviation Technology, 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015), pp. 1-31. doi: 10.21608/asat.2015.23012
VANCOUVER
Nemnem, A., Turner, M. Smooth Curvature of Airfoils Meanline for a General Turbomachinery Geometry Generator. International Conference on Aerospace Sciences and Aviation Technology, 2015; 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015): 1-31. doi: 10.21608/asat.2015.23012
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