摘要
采用结构化网格和求解Navier-Stokes方程的方法,进行了无人机和巡航导弹气动性能计算,并数值模拟了其气动流场,所得结果与工程实际现象吻合;分别建立了无人机和巡航导弹的曲面及面劈模型,根据GRECO-WM方法,计算了其表面全向雷达散射截面(RCS)值;基于灰色系统的灰关联度分析理论,提出了气动-隐身综合性能的量化评判模型,并对2种无人机和3种巡航导弹的综合性能进行了评价,得到了对工程设计具有参考价值的结论。
By solving the Navier-Stokes equation,the aerodynamic behavior of an unmanned aerial vehicle and cruise missile is predicted and their aerodynamic flowing fields are simulated with the structured mesh technique.The obtained results are found to be in good agreement with previous work and engineering practice.With a CAD-based code,the geometric surface and face-and-wedge models of an unmanned aerial vehicle and cruise missile are generated for calculating their omni-directional radar cross-section （RCS） by using the GRECO-WM algorithm.According to the grey correlation analysis theory,a new quantization model is proposed to evaluate the aerodynamic and stealth combination property of an aircraft.Finally,the model is applied to two sets of unmanned aerial vehicles and three sets of cruise missiles,and the results demonstrate the practical and economic use of the proposed technique.It is shown from these examples that the aerodynamic and stealth combination property of an aircraft can be obtained realistically by means of the new model.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2010年第7期1338-1350,共13页
Acta Aeronautica et Astronautica Sinica
关键词
飞行器
隐身
气动
综合性能
灰关联分析
灰关联度
aircraft
stealth
aerodynamics
combination property
grey correlation analysis
grey correlation
