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- W2334859924 abstract "In previous work a technology portfolio composition problem was formulated from a multi-objective optimization perspective in order to find favorable combinations of technologies for a given vehicle configuration to satisfy prescribed environmental goals. The work implemented the Non-Sorted Genetic Algorithm II (NSGA-II) on a pool of 91 technologies applied to a Large Twin Aisle tube-and-wing aircraft and optimized for: percent fuel burn reduction relative to a 2005 reference vehicle, LTO NOX percent reduction relative to CAEP/6 limits, and cumulative noise margin relative to Stage IV limits. This work expands upon the previous work by studying six vehicles including: Large Single Aisle Tube and Wing (LSA), Large Single Aisle Over the Wing Nacelle (LSA OWN), LTA, Large Twin Aisle Mid Fuselage Nacelle (LTA MFN), Large Twin Aisle Hybrid Wing Body (LTA HWB), and Large Twin Aisle Box Wing (LTA BW). Pareto frontiers for each vehicle are generated and are thoroughly examined by evaluating which technologies govern clustering and patterns on the Pareto surface, the corners of the performance trade space, and comprise the region surrounding the compromise point. The Pareto surface is also assessed in terms of emerging patterns in the number of technologies of non-dominated solutions as well as the overall location and span of the Pareto surface in the objective space. Based on the characterization of the Pareto set of solutions for each aircraft concept a comparative analysis is drawn across concepts to identify overarching technology trends, outline technology scalability phenomena, and isolate the performance impact of aircraft concepts in the objective space. Altogether this work provides greater insight into trends, interactions, and tradeoffs of next generation technologies and aircraft concepts, and in parallel it demonstrates a new approach to systems analysis where single solutions are replaced by the entire locus of Pareto optimal solutions." @default.
- W2334859924 created "2016-06-24" @default.
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- W2334859924 date "2015-01-03" @default.
- W2334859924 modified "2023-09-26" @default.
- W2334859924 title "Comparison of Advanced Vehicle Concepts through Pareto-Optimal Technology Sets" @default.
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- W2334859924 doi "https://doi.org/10.2514/6.2015-0515" @default.
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