Morphing Research Aerial System Novel Design and Validation using Experimental Testing

研究空中系统RAS是UAS-S4的修改版本，由Hydra Technologies设计和制造，并将用于构思变形飞行器设计的新方法，如下所示：*1。基准RAS空气动力学和结构分析 * 将使用Hydra Technologies提供的数据进行空气动力学和结构分析，以获得空气动力学和结构载荷。2.变形RAS空气动力学、结构和控制分析 * 将进行空气动力学和结构载荷相互作用的优化，以获得作为RAS机翼柔性蒙皮上所施加载荷的函数的最佳致动器位移，目的是获得RAS变形机翼的所需空气动力学性能，以减阻、过渡延迟、失速角、升力增加、等人将确定机翼变形上表面的长度和位置，包括其前缘形状，以及致动器的位置和类型。配备致动器和传感器的变形翼的风洞结构模型将与Hydra Technologies合作设计和制造。将在LARCASE进行台架试验，以验证和确认控制系统。*3。在优化作动器和压力传感器的数量和类型之后，变形机翼的控制器系统，包括机翼、副翼和襟翼设计的变化，将用于改善气动性能。在LARCASE的Price-Païdousis亚音速风洞中，将对这些控制系统律、变形机翼的气动载荷和结构载荷之间的相互作用进行分析和实验验证。将构思和评估各种新的方法，用于验证开环和闭环控制器系统设计。* 4. RAS的飞行动力学模型识别和验证 * 基线和变形RAS的飞行动力学模型将使用Hydra Technologies飞行模拟器以及飞行试验和几何数据进行识别和验证。* 5.原始和变形RAS之间的空气动力学性能比较 * 将进行原始和变形RAS之间的空气动力学性能比较。*这项研究的独创性在于分析气动和结构载荷与控制器系统的相互作用规律，以及新的建模、仿真和控制技术的概念，这些技术将在变形RAS上进行实验验证，其目标是提高气动性能和降低燃油消耗。从长远来看，变形机翼的设计变化，包括副翼和襟翼，也将被分析，以及用变形机翼取代传统的机翼，副翼和RAS襟翼。 **

The Research Aerial System RAS, that is a modified version of the UAS-S4, was designed and manufactured by Hydra Technologies, and will be used to conceive new methodologies for morphing vehicles design, as follows:***1. Baseline RAS aerodynamic and structural analysis***Using data provided by Hydra Technologies, aerodynamic and structural analyses will be performed to obtain the aerodynamic and structural loads.***2. Morphing RAS aerodynamics, structural and control analyses***An optimization of aerodynamic and structural loads interactions will be performed to obtain the optimal actuators' displacements as a function of their applied loads on the flexible skin of the RAS wings, with the goal of obtaining the desired aerodynamic performance of the RAS morphing wing, expressed in terms of drag reduction, transition delay, stall angle, lift increase, and others. The length and position of the morphed upper surface of the wing, including its leading edge shape, and the positions and types of the actuators will be determined. The wind tunnel structural model of the morphing wing equipped with actuators and sensors will be designed and manufactured in collaboration with Hydra Technologies. Bench tests will take place at the LARCASE for the verification and validation of the control system. ***3. Wind tunnel tests of the baseline and the morphing RAS***After the optimization of the number and types of actuators and pressure sensors, the controller systems for the morphing wing, including changes in the wing, aileron and flaps designs will be used for the improvement of aerodynamic performances. The interactions between these control systems laws, the aerodynamic and structural loads of the morphing wing will be analyzed and experimentally validated in the Price-Païdoussis subsonic wind tunnel at the LARCASE. Various new methodologies for the validation of open and closed loop controller systems designs will be conceived and evaluated.***4. Flight dynamics model identification and validation of the RAS***The flight dynamics model of the baseline and of the morphing RAS will be identified and validated using the Hydra Technologies flight simulator, as well as flight tests, and geometrical data.***5. Aerodynamic performance comparison between the original and the morphing RAS***A comparison between the original and the morphing RAS aerodynamic performances will be conducted.***The originality of this research resides in the analysis of aerodynamic and structural load interactions with controller systems laws and in the conception of new modeling, simulation and control techniques, which will be experimentally validated on a morphed RAS with the goal of improving aerodynamic performance, and reducing fuel consumption. In long term, changes in design of morphing wings, including ailerons and flaps will also be analysed, as well as the replacement of traditional wings, ailerons and flaps of the RAS with morphing wings. **