A scheme for the computer-aided design and manufacture of a radial turbine rotor is described based on a package developed by the University of Manchester Institute of Science and Technology. Starting with a one-dimensional calculation, the overall dimensions of the rotor are determined for a specified performance. From these data, the detailed dimensions of the blade profile are evaluated. These are then processed as input data for stress calculations and flow analysis in the blade passages. Interaction between the designer and the program at a number of points enables an optimal design to be achieved. As an aid to assessing the design, a rotating pictorial view of the rotor may be presented on the visual display unit The final output may be in the form of working drawings, blade profile dimensions, or tapes to assist in the preparation of patterns for castings, dies for forging, jigs and templates for machining or straight input to N.C. Machines. Illustrations of the accuracy of the flow analysis methods and typical outputs are given.

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