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

航空运输政策和运营商以及飞机制造商要求更安全和更环保的航空运输系统以及降低开发和运营成本，后者在短期和长期内分别降低20%和50%，这导致需要在飞机设计中进行范式转变。为了达到这个目的，在过去的五年里，采用新的构型、更轻的复合材料以增加有效载荷、节能的推进系统和变形的操纵面以减少阻力，在研究界引起了相当大的注意。一个令人感兴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，从而减少燃料消耗和污染物排放。然而，** 通过设计更细长的机翼，机翼结构变得更灵活，并且在相同的操作条件下容易产生更大的偏转 **。这种效应可能导致气动伺服弹性性能的变化，这可能导致动态不稳定性。因此，在大展弦比机翼的设计中，考虑几何非线性是很重要的。从长远来看，新的布局，如融合翼身和连接翼布局提出了有前途的解决方案，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，用于分析、实验评估和验证商用喷气机在跨音速范围内运行的新型翼身融合构型，和（ii）区域运输机柔性和非线性大展弦比机翼的气动伺服弹性性能评估。

Air transport policies and operators, and aircraft manufacturers are demanding safer and greener air**transportation systems as well as reduced development and operating costs, the latter by 20% and 50% in the**short and long term, respectively, which has resulted in a need for a paradigm shift in aircraft design. To this**end, the adoption of novel configurations, lighter composites to increase payload, energy efficient propulsion**systems, and morphing control surfaces to reduce drag have received considerable attention in the research**community for the past five years. An interesting mid-term solution is the increase of wing aspect-ratio to**reduce 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 deflections**under the same operation conditions. This effect may lead to changes in aeroservoelastic performance, which**may lead to dynamic instabilities. Hence the importance of taking into account geometric nonlinearities in the**design of high aspect-ratio wings. Over the long term, novel configurations such as the blended-wing-body and**joined-wing configurations present promising solutions to replace the current conventional designs. In this**project, a two-pronged approach is proposed to study a number of facets in advanced aircraft design: (i) new**multidisciplinary design optimization methodologies to analyze and experimentally evaluate and validate novel**blended-wing-body configurations for operation in the transonic range for business jets, and (ii) the**aeroservoelastic performance evaluation of flexible and nonlinear high aspect-ratio wings for regional transport**aircraft.