基于正交试验的联翼端板参数优化
The End Plate Parameter Optimization of Joined Wing Based on The Orthogonal Experiment
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摘要: 为减小端板几何参数对联翼布局气动特性的影响,运用正交试验法针对联翼布局中端板的3个角度参数设计实验方案,采用CFD方法对模型进行仿真计算,分析其升阻比和俯仰力矩特性。结果表明,偏转角为影响升阻比和俯仰力矩的主要因素,外倾角和纵向夹角对两者影响较小。优化后模型比基准模型升阻比高,静稳定性更好。研究结果可为联翼布局设计提供理论依据。Abstract: To reduce the influence of the end plate geometric parameters for joined wing aerodynamic characteristics of the layout, the study was design aimed at three kinds of angle parameters of end plate in the joined wing with the orthogonal experiment method. Simulation calculation of the model was made with the CFD method for analyzing the lift-drag ratio and pitching moment characteristics. The results showed that deflection angle is the main factor for influencing the lift-drag ratio and pitching moment, while the camber angle and the axial angle have a poor influence. The optimized model has higher lift-drag ratio and better static stability compared with the reference model. The study results can provide theoretical basis for the design of joined wing layout.