Approach for design of 3-D radial impeller with straight fibre

Approach for 3 D radial impeller designing with straight fibre to eliminate the unfairness due to the error of design data of the blade edges was presented. Objective function based on average curvature containing strain energy was introduced, and the curves were faired so that finishing the CNC machining can be carried out successfully. This algorithm was used in home developed Impeller CAM software steadily.