Novel Aeroservoelastic Stability Analysis and Augmentation Framework: Application to Next-Generation Flexible Aerial Platforms

新型气动伺服弹性稳定性分析和增强框架：在下一代柔性空中平台中的应用

• 批准号: RGPIN-2020-06318
• 负责人: KHOULI, FIDEL
• 金额: $ 1.68万
• 依托单位: Carleton University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=759519
• 关键词: Novel; Aeroservoelastic; Stability; Analysis; Augmentation

Next-generation autonomous and commercial aerial vehicles will operate in challenging flight regimes, utilize lightweight and flexible airframes and possess new topological forms that will lead to superior performance and lower environmental footprint. However, the high flexibility of the airframe will give rise to aerodynamics-stabilizing control laws-structural interactions abbreviated as Aero-Servo-Elasticity. Aeroservoelastic instabilities, which also encompass the aeroelastic ones, are known to plague flexible airframes. Without proper understanding and mitigation strategies, these instabilities will prevent the deployment of aerial vehicles with otherwise superior performance and lower environmental footprint. The development of a novel aeroservoelastic stability analysis and augmentation framework that will be used in the design and the optimization of next-generation flexible aerial platforms is the principal goal of the proposed research program. Target applications of the proposed novel framework in the next five years are Tailless Bio-inspired Micro-Air-Vehicles (TBMAVs) and Unconventional Flexible Aircraft (UFA). Both platforms share challenging aeroservoelastic problems that are rooted in the high flexibility of their airframe. These are manifested as static and dynamic instabilities that may lead to degradation of handling and control qualities, airframe vibration or complete loss of the aerial platform. It is emphasized that the proposed novel framework is encompassing and applicable to other next-generation flexible aerial platforms such as rotary-wing and urban air taxis, which will be addressed by the research program in the long term as it evolves. TBMAVs and UFA offer several performance and environmental advantages when compared to other aerial platforms and they are being considered for autonomous surveillance and future-commercial aircraft respectively. The proposed framework will introduce novel reduced-order-modelling techniques, which is an essential step that precedes aeroelastic and aeroservoelastic analyses, and develop models that will be used to investigate aeroservoelastic instabilities and suggested mitigation strategies. The research program will utilize the developed framework to be the first to rigorously investigate the aeroservoelastic stability of TBMAVs and assess novel passive and active strategies to mitigate known aeroelastic and aeroservoelastic instabilities intrinsic to UFA. Through training of HQP, engagement with aerospace companies and dissemination of research outcomes in open journal publications, the research program will address the urgent needs of the vital aerospace sector in Canada.

下一代自动驾驶和商用飞行器将在具有挑战性的飞行状态下运行，利用轻便灵活的机身，并拥有新的拓扑形式，将带来卓越的性能和更低的环境足迹。然而，机身的高度灵活性将产生空气动力学稳定控制律-结构相互作用缩写为气动伺服弹性。气动服务弹性不稳定性也包括气动弹性不稳定性，众所周知，这种不稳定性会困扰柔性机身。如果没有适当的理解和缓解策略，这些不稳定性将阻止部署性能优越、环境足迹较低的飞行器。开发一种新的气动伺服弹性稳定性分析和增强框架，用于下一代柔性空中平台的设计和优化，是拟议研究计划的主要目标。拟议的新框架在未来五年的目标应用是无尾生物启发微型飞行器(TBMAV)和非传统柔性飞机(UFA)。这两个平台共享具有挑战性的气动伺服弹性问题，这些问题植根于其机身的高度灵活性。这些表现为静态和动态不稳定，可能导致操纵和控制质量下降、机身振动或高空平台完全丧失。需要强调的是，拟议的新框架涵盖并适用于其他下一代柔性空中平台，如旋转翼和城市空中出租车，这些问题将由研究计划随着其发展而长期解决。与其他空中平台相比，TBMAV和UFA提供了几个性能和环境优势，它们正分别被考虑用于自主监视和未来商业飞机。拟议的框架将引入新的降阶建模技术，这是气动弹性和气动伺服弹性分析之前的一个重要步骤，并开发将用于研究气动伺服弹性不稳定性和建议的缓解战略的模型。该研究计划将利用开发的框架首次严格研究TBMAV的气动伺服弹性稳定性，并评估新的被动和主动策略，以缓解已知的UFA固有的气动弹性和气动伺服弹性不稳定性。通过培训HQP、与航空航天公司接触以及在公开期刊出版物上发布研究成果，该研究计划将满足加拿大至关重要的航空航天部门的迫切需求。