无尾升力式飞行器Weissman判据图仿真

针对无尾升力式飞行器横航向气动耦合严重的问题，开展了Weissman判据在此类飞行器稳定性设计中的应用研究.采用调整布局的方法获得飞行器布局集，采用基于Newton理论的工程方法获得对应的气动数据集.运用飞行动力学仿真手段分析了飞行器在无控和副翼控制时的横航向飞行稳定性.结合仿真结果和Weissman判据分区规则获得飞行器Weissman判据图.研究表明，无尾升力式飞行器的关键设计点气动稳定性位于Weissman判据图的B区.文章的方法可用于再入机动飞行器的耦合稳定性设计. 

Weissman Chart Analysis of Tailless Lifting Body by Flight Dynamics Simulation

Lateral and directional aero-coupling effects of tailless lifting body are always strong. Weissman chart criteria were applied to analyze the lateral and directional stability of this vehicle. In order to construct a group of aerodynamic data, a serial of configurations were developed based on a general shape. Then a 6-DOF flight dynamics simulation technology was applied to research each configuration's lateral and directional stability at 1-g wings level trimmed flight condition, with and without aileron control. According to simulation results and Weissman regime-identification method, the Weissman charts for all configurations were obtained. As a conclusion, the lateral and directional stabilities of the vehicle are almost located in regime B of Weissman chart. This method could be used to design lateral and directional aero-coupling stability of maneuverable reentry vehicles.