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Cristina Johansson,Micael Derel€ov,Johan €Olvander 한국원자력학회 2017 Nuclear Engineering and Technology Vol.49 No.2
In order to help decision-makers in the early design phase to improve and make more costefficientsystem safety and reliability baselines of aircraft design concepts, a method(Multi-objective Optimization for Safety and Reliability Trade-off) that is able to handletrade-offs such as system safety, system reliability, and other characteristics, for instanceweight and cost, is used. Multi-objective Optimization for Safety and Reliability Trade-offhas been developed and implemented at SAAB Aeronautics. The aim of this paper is todemonstrate how the implemented method might work to aid the selection of optimaldesign alternatives. The method is a three-step method: step 1 involves the modelling ofeach considered target, step 2 is optimization, and step 3 is the visualization and selectionof results (results processing). The analysis is performed within Architecture Design andPreliminary Design steps, according to the company's Product Development Process. Thelessons learned regarding the use of the implemented trade-off method in the three casesare presented. The results are a handful of solutions, a basis to aid in the selection of adesign alternative. While the implementation of the trade-off method is performed forcompanies, there is nothing to prevent adapting this method, with minimal modifications,for use in other industrial applications.