Aerodynamic Design of the NASA Rotor 67 for Non Uniform Inflow

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Aerodynamic Design of the NASA Rotor 67 for Non Uniform Inflow ( aerodynamic-design-nasa-rotor-67-non-uniform-inflow )

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Master Thesis Report Parameterisation and Reconstruction of the NASA Rotor 67 4|Parameterisation and Reconstruction of the NASA Rotor 67 In this chapter, the actual reconstruction process of the NASA Rotor 67 will be demonstrated. Starting from the process of geometry extraction to obtaining the final 3D blade shape, the reconstruction process of the NASA Rotor 67 will be demonstrated. Intermediate steps such as the fitting of the blade camberline as well as the development of a geometry fitting algorithm for fitting the 2D profiles will be explained. After the blade is reconstructed, a comparison of the reconstructed and original NASA Rotor 67 as well as the design trend of the NASA Rotor 67 will be presented 4.1 Step 1: Extraction of the blade geometry from the CGNS mesh In this section, the extraction of the rotor geometry from the CGNS mesh is illustrated. Using tecplot, 2d profile slices are extracted manually from the mesh file. Z Y X Y X Z Figure 4.1: Original NASA Rotor 67 Figure 4.2: Sliced NASA Rotor 67 As seen in figure 4.2, several horizontal slices were made within the mid location of the blade. Near the hub and tip location, the slices made were flared according the geometrical shape of the rotor. An illustration of the various slices made along the blade is illustrated in figure 4.3. In total, 13 control profiles were extracted from the CGNS mesh of the NASA Rotor 67. 28

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