An enhanced nonlinear programming code has been developed and applied to a turbogenerator hydrostatic thrust bearing design problem. The original code was OPT. It is augmented by a pre- and post-processor which addresses the performance variance minimization problems posed by Japan’s Genichi Taguchi. The new code TOPT is formed by adapting Taguchi’s external design influence and quality loss concepts to OPT. TOPT’s results are compared to an optimization using traditional Taguchi methods which are introduced to the reader. These two approaches yield comparable results.

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