Recent developments in computer capabilities and software have enabled the application of deterministic optimisation and Robust Design methods in real-world aero-engine development programmes. This paper describes both the methods used and several applications of this technology. Using automated processes, deterministic optimisation, and especially Robust Design methods, an increased product quality and reliability have been achieved, while at the same time producing a considerable decrease in development time and cost. It is the application of Robust Design methods that leads to increased product quality and reliability, as deterministic optimisation methods alone often drive on to constraint boundaries, leading to “cliff-edge” designs.

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