Commercial aircraft wings in-flight shape, how to predict it?

商用飞机机翼在飞行中的形状如何预测呢？

• 批准号: 2876666
• 金额: --
• 依托单位: University of Liverpool
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2876666
• 关键词: Commercial; aircraft; wings; flight; shape

Background: Wings are designed for very specific in-flight (loaded) target shapes that differ significantly from the neutral (unloaded) ones. The wing tip of the Airbus 320 deflects upwards by about 1.5m under in-flight conditions and can go up to about 4m before failure. Such a deformation is due to the aerodynamic forces acting on the wing structure generated by the wing itself moving through the air. The optimal aero-structural design is the one that achieves the in-flight (cruise) geometry that maximises the lift to drag ratio. However, the in-flight geometry is a consequence of the structural response to aerodynamic loads, and the aerodynamic loads are a consequence of the wing in-flight geometry. Hence, getting accurate prediction of the in-flight shape at the design phase is of paramount importance for achieving an optimal aerodynamic wing design.Outline of Work: Following an initial literature survey to understand the current state-of-the-art, a programme plan with refined aims and objectives will be developed in agreement with the industrial partner. Focus is on conceptualising the methodology for including probabilistic uncertainty quantification in the prediction of the wing in-flight shape. The next stage will involve developing and investigating a small-scale model to be tested in the low-speed wind tunnel at the University of Liverpool, and, once satisfactory in terms of prediction capabilities, the methodology will be applied to an industrial test case during a 6-month internship at Airbus.

背景：机翼是为非常特殊的飞行中（加载）目标形状而设计的，这些形状与中性（未加载）目标形状有很大不同。空中客车320的翼尖在飞行条件下向上偏转约1.5米，在故障前可高达约4米。这种变形是由于作用在机翼结构上的空气动力，该空气动力是由机翼本身在空气中移动而产生的。最佳的气动结构设计是实现最大化升阻比的飞行（巡航）几何形状的设计。然而，飞行中的几何形状是结构对气动载荷响应的结果，而气动载荷是机翼飞行中几何形状的结果。因此，在设计阶段获得飞行中外形的准确预测对于实现最佳气动机翼设计是至关重要的。工作大纲：在初步文献调查以了解当前最先进的技术水平之后，将与工业合作伙伴达成协议，制定具有细化目标和目的的计划计划。重点是概念化的方法，包括概率的不确定性量化的机翼飞行形状的预测。下一阶段将涉及开发和研究一个小比例模型，在利物浦大学的低速风洞中进行测试，一旦预测能力令人满意，该方法将在空中客车公司为期6个月的实习期间应用于工业测试案例。