Robust multidisciplinary analysis and optimization for conceptual design of flexible aircraft under dynamic aeroelastic constraints

Marco Saporito; Andrea Da Ronch; Nathalie BartoliSebastien Defoort

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Robust multidisciplinary analysis and optimization for conceptual design of flexible aircraft under dynamic aeroelastic constraints

机译：Robust multidisciplinary analysis and optimization for conceptual design of flexible aircraft under dynamic aeroelastic constraints

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We present a computational framework for robust multidisciplinary design and optimization of flexible aircraft, suited for the conceptual design exploration phase. Constraints are representative of some dynamic aeroelastic effects, including flutter and gust-induced structural stresses. Uncertainties on wing structural parameters are considered, and reliability-based optimization under dynamic aeroelastic constraints is addressed by a Bayesian approach. This work details the implementation aspects, covering disciplinary software tools and the overall aircraft design suite, the optimization algorithm and the approach to propagate uncertainty efficiently. Results are thoroughly discussed for a reference aircraft, which is optimized in the study with respect to a few wing parameters including aspect ratio. The proposed approach is compared to a conventional design methodology assuming a rigid airframe. We show that when applied to slender and flexible wings, the latter can produce dangerous non-conservative results, as its predictions are too optimistic both with respect to efficiency and to aeroelastic safety.

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来源
《Aerospace science and technology》 |2023年第7期|108349.1-108349.19|共19页
作者
Marco Saporito; Andrea Da Ronch; Nathalie BartoliSebastien Defoort;
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作者单位

University of Southampton, University Rd, Southampton, S0171BJ, UK;

University of Southampton, University Rd, Southampton, S0171BJ, UK,ONERA/DTIS, Universite de Toulouse, 2 Av. Edouard Belin, Toulouse, F-31055, France;

ONERA/DTIS, Universite de Toulouse, 2 Av. Edouard Belin, Toulouse, F-31055, France;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Overall aircraft design; Aeroelasticity; MDAO; Conceptual design; Flutter; Gust loads;

Robust multidisciplinary analysis and optimization for conceptual design of flexible aircraft under dynamic aeroelastic constraints

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