Rapid Approaches to Assess Power-Plant Loading for Novel Aircraft Concepts Under Extreme Events

我研究课题的工作题目是“极端事件下新概念电厂负荷快速评估方法”。目前，飞机发动机要经过昂贵而严格的认证过程，并在物理发动机上进行测试。分析极端事件对发动机的影响将导致发动机在试验过程中的破坏。希望是朝着一种“分析认证”的方法努力，从而不再需要昂贵而浪费的发动机破坏。极端事件可能包括风扇叶片脱落、鸟食、旋翼盘故障、起降或紧急机动。来自最严重的极端事件的负载通常将用于确定关键组件的尺寸。目前出现的主要飞机新概念包括将动力装置安装在机身上表面的混合翼体、将动力装置安装在机翼下方的支柱支撑翼以及将动力装置安装在机身后部的边界层吸入概念。新颖的发动机设计可能包括超高涵道比涡轮风扇、开式转子设计或反旋转风扇，同时也关注电气化的发展。我目前的研究目标是开发结构建模策略，以评估在早期设计阶段经历极端事件的新兴飞机概念，特别关注动力装置和机身的相互作用。这个工具可以帮助我们在概念阶段做出未来的设计决策，从而避免在开发过程后期进行昂贵的重新设计。主要目标是进行全面的文献综述，调查当前的飞机认证要求、新兴概念、建模方法和动力装置/机身结构。找出当前知识和学术文献中的差距。识别最重要的极端事件和当前的认证要求。研究并提出适合早期设计阶段的建模策略，可用于评估经历极端事件的新型飞机概念。该研究由EPSRC资助，并与他们的工程设计研究领域保持一致，该研究领域专注于复杂工程系统的生成、建模、优化、模拟和推理的理论、方法和工具。它也是与劳斯莱斯公司合作资助和实施的。在贝尔法斯特女王大学的德克兰·诺兰博士和达米安·奎恩博士的指导下。

The working title of my topic of research is "Rapid Approaches to Assess Power-Plant Loading for Novel Concepts Under Extreme Events". Currently, aircraft engines go through an expensive and rigorous certification process with the tests being conducted on a physical engine. Analyzing the effects of extreme events on the engine will result in the destruction of the engine during testing. The hope is to work towards a method of "certification by analysis" whereby the expensive and wasteful destruction of the engines would no longer be required. Extreme events may include a Fan Blade Off, Bird Ingestion, Rotor Disk Failure, Wheels-Up Landing or Emergency Maneuvers. The load from the most severe extreme event is often what will be used to size critical components. The main emerging novel concepts for aircraft include the Blended Wing Body with the power-plants mounted on the top surface of the fuselage, the strut-braced wing with the power-plant mounted under the wing, and the boundary layer ingestion concept where the power-plant is placed at the rear of the fuselage. Novel engine designs might include Ultra-high Bypass Ratio turbofans, Open-Rotor designs or Counter-Rotating Fans with attention also given to the moves made towards electrification. The current aim of my research is to develop structural modelling strategies to assess emerging aircraft concepts undergoing extreme events at early design stages, with particular focus on powerplant and airframe interactions. This tool could then help inform future design decisions at concept stages to avoid costly re-design later in the development process. The main objectives would be to conduct a thorough literature review investigating current aircraft certification requirements, emerging concepts, modelling methods and power-plant/airframe structure. Identify gaps in the current knowledge and academic literature. Identifying the most significant extreme events and current certification requirements. Investigating and proposing modelling strategies suitable for early design stages, which can be used to assess novel aircraft concepts undergoing extreme events. The research is funded by the EPSRC and is aligned with their Engineering Design research area, which is focused on theories, methods, and tools for generating, modelling, optimizing, simulating, and reasoning about complex engineered systems. It is also part-funded and conducted in collaboration with Rolls Royce plc. under the supervision of Dr Declan Nolan and Dr Damian Quinn at Queen's University Belfast.