Multidisciplinary design optimization of novel and flexible aircraft configurations: design, build, test and fly [MIDAS]

新颖灵活的飞机配置的多学科设计优化：设计、建造、测试和飞行 [MIDAS]

• 批准号: 500925-2016
• 负责人: Suleman, Afzal
• 金额: $ 10.14万
• 依托单位: University of Victoria
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=693521
• 关键词: Multidisciplinary; design; optimization; novel; flexible

Air transport policies and operators, and aircraft manufacturers are demanding safer and greener airtransportation systems as well as reduced development and operating costs, the latter by 20% and 50% in theshort and long term, respectively, which has resulted in a need for a paradigm shift in aircraft design. To thisend, the adoption of novel configurations, lighter composites to increase payload, energy efficient propulsionsystems, and morphing control surfaces to reduce drag have received considerable attention in the researchcommunity for the past five years. An interesting mid-term solution is the increase of wing aspect-ratio toreduce the aerodynamic induced drag and thus decrease fuel consumption and pollutant emissions. However,by designing more slender wings, the wing structure becomes more flexible and prone to higher deflectionsunder the same operation conditions. This effect may lead to changes in aeroservoelastic performance, whichmay lead to dynamic instabilities. Hence the importance of taking into account geometric nonlinearities in thedesign of high aspect-ratio wings. Over the long term, novel configurations such as the blended-wing-body andjoined-wing configurations present promising solutions to replace the current conventional designs. In thisproject, a two-pronged approach is proposed to study a number of facets in advanced aircraft design: (i) newmultidisciplinary design optimization methodologies to analyze and experimentally evaluate and validate novelblended-wing-body configurations for operation in the transonic range for business jets, and (ii) theaeroservoelastic performance evaluation of flexible and nonlinear high aspect-ratio wings for regional transportaircraft.

航空运输政策和运营商以及飞机制造商正在要求更安全、更环保的航空运输系统以及降低开发和运营成本，后者在短期和长期分别降低20%和50%，这导致需要对飞机设计进行范式转变。为此，采用新的结构、更轻的复合材料来增加有效载荷、节能的推进系统以及变形控制表面以减少阻力在过去五年中受到了研究界的极大关注。一个有趣的中期解决方案是增加机翼展弦比，以减少气动诱导阻力，从而减少燃油消耗和污染物排放。然而，通过设计更细长的机翼，机翼结构变得更加灵活，在相同的操作条件下容易产生更大的偏转。这种效应可能会导致气动服务弹性性能的变化，从而可能导致动态不稳定性。因此，在大展弦比机翼的设计中考虑几何非线性是非常重要的。从长远来看，新的结构，如混合机翼机身和连接机翼结构，提供了有希望的解决方案，以取代目前的传统设计。在这个项目中，提出了一种双管齐下的方法来研究先进飞机设计中的一些方面：(I)新的多学科设计优化方法，以分析、实验评估和验证用于跨音速范围的新型混合翼身结构，以及(Ii)用于支线运输机的柔性和非线性大展弦比机翼的气动服务弹性性能评估。