大展弦比联接翼静气动弹性研究

Study on static aeroelasticity for high aspect ratio joined-wings

基于雷诺平均N-S流动控制方程和结构网格技术,耦合结构静平衡方程,建立起飞行器静气动弹性的计算的一般流程。采用更新速度快和更新质量较高的映射法动网格技术,针对大展弦比联接翼构型进行弹性修正,研究前后翼变形规律,并探讨了攻角、机身对静气弹分析的影响。结合数字近景摄影测量技术检测无人机风洞模型机翼在气动载荷下的弯曲与扭转变形,并与计算结果进行比较,验证了本文方法的有效性。

Based on Euler/N-S equations and multi-block structure meshes technology, coupling the structure equilibrium equations, an efficient simulation procedure is established for static aeroelasticity of the aircraft. A three-dimensional dynamic grid technology is presented based on Delauney map, then the higher mesh quality and faster computational effect for mesh update could be obtained. High aspect ratio joined- wings is studied by means of static aeroelasticity method, then the effect of attack angle and fuselage are also discussed. According to videogrammetry deformation measurement, this method is comparative accurate, thus suitable for engineering application.