一种低速复合升力飞行器飞行动力学建模与分析

摘要

Considering the characteristic of a multimode aircraft which consists of a ducted fan and two tilt propellers,the flight dynamic model was developed and analyzed.The momentum theo-ry was used to build the flight dynamic model for the ducted fan.Considering the redundant prob-lems in manipulating the multimode aircraft,a rea-sonable manipulation strategy was calculated.The linear models were obtained and the longitude dy-namical stability for typical flight states were ana-lyzed in different flight models.The results show that the model contains the typical characteristic of the multimode aircraft.%针对一种由升力风扇和倾转螺旋桨组成的复合升力飞行器构型特点，建立其飞行动力学模型并进行分析研究。应用动量理论分析了升力风扇的气动力。建立了飞行器纵向动力学模型。针对飞行器飞行模式转换阶段特存的操纵冗余问题，提出了合理的配平策略，完成平衡计算。在平衡状态点线化模型，并对不同飞行模式下典型飞行状态纵向动稳定性进行分析。结果表明，系统所建立的模型能够反映该类符合升力飞行器各飞行模式的典型特征。