空地两用燃料电池轻型飞机总体参数设计与建模

Overall Parameters Design and Modeling of a Fuel Cell Driven Roadable Light Aircraft

开展一类跨领域飞行器——空地两用燃料电池轻型飞机的总体参数设计、建模与分析,建立的方法可用于此类飞行器的快速设计与参数权衡。搭建了满足空中飞行与地面行驶要求的设计流程,建立了飞机-汽车-新能源驱动系统融合的参数分析模型,对一种下单翼双尾撑布局方案进行了总体参数设计与参数敏感性分析,并据此提出燃料电池驱动系统关键指标。

This paper put the emphasis on the overall parameters design,modeling and analysis of a cross field aircraft—the fuel cell driven roadable light aircraft,the established method can be used for rapid design and parameters tradeoff. Computation and analysis of the lift characteristics of the ducted fan S \ VTOL aircraft. By applying the modified momentum-profile theory,the modified momentum-profile-theory model of ducted propeller is proposed which will be used in the concept design. CFD numerical simulation is carried out for a certain ducted tail rotor in different axial states,and some general rules of aerodynamics change of ducted propeller are obtained in the paper. A second correction is taken after analyzing the induced velocity distribution behind the propeller disk in the wake zone. A newconcept of ducted fan based on torque balance is proposed based on the research of ducted propeller. The initial optimization of the overall designing parameters is conducted in overall design level.