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微型飞行器(MAV)非线性飞行力学模型研究是MAV设计中的一个重要环节。微型涵道飞行器由于大包线、尺寸小、速度低、气动布局特殊,其飞行力学特性具有显著的非线性特性。以低雷诺数风洞实验为基础,研究了微型涵道飞行器的空气动力学特性,并采用CFD方法计算了微型涵道飞行器的动导数。在此基础上建立了微型涵道飞行器的飞行力学模型,并计算了基本飞行性能和配平曲线。结果表明,微型涵道飞行器与常规飞行器相比有很大差异,可以完成悬停、垂直起降和前飞的大包线飞行。
Micro-aircraft (MAV) nonlinear flight mechanics model research is an important part of MAV design. Due to the large size, small size, low speed and special aerodynamic layout, the micro-ducted aircraft has significant nonlinearity in its flight mechanics. Based on the low Reynolds number wind tunnel experiment, the aerodynamic characteristics of the micro-ducted aircraft were studied and the dynamic derivatives of the micro-ducted aircraft were calculated by the CFD method. On this basis, the flight mechanics model of miniature culvert aircraft is established and the basic flight performance and trim curve are calculated. The results show that there are great differences between the miniature tunnel vehicle and the conventional aircraft, which can complete the large-scale flight with hovering, vertical takeoff and landing and forward flight.