NURBS曲面在气动外形变形中的应用  

Application of Aerodynamic Shape Deformation based on NURBS Surface

作　　者：马晓永[1] 张彦军[1] 雷武涛[1] 

机构地区：[1]中航工业第一飞机设计研究院,陕西西安710089

出　　处：《航空科学技术》2014年第3期75-78,共4页Aeronautical Science & Technology

摘　　要：针对翼吊布局飞机复杂气动外形,建立了基于样条(NURBS,非均匀有理B样条)曲面和曲面叠加技术的曲面变形方法。在对样条曲线性质分析的基础上,以DLR-F6飞机为实例,对其机翼翼根、短舱挂架局部进行曲面网格变形,结果表明该方法能有效表述其复杂几何外形及型面变化特性,并且具有较好的局域性、可控性和光滑性。该方法可有效应用于吊舱挂架等复杂气动外形的建模、表面网格变形及气动外形优化设计等。A free deformation method based on the B-Spline （NURBS, Non-Uniform Rational B-Spline） and surface superposition technique was presented for complex aerodynamic shape such as wing mounted nacelle-pylon conifguration. The characteristic of parameters were analyzed with B-Spline curves case, and the application instances of surface grids deformation on wing and pylon of DLR-F6 plane shows that the method could describe complex surfaces and its deformation characteristic effectively, the control parameter only change its local surface, and it is easy to carry out. The method is feasible and applicable to model representation, surface grids deformation and aerodynamic shape optimization etc.

关 键 词：气动外形 样条曲面 短舱挂架 

分 类 号：V211.4[航空宇航科学与技术—航空宇航推进理论与工程]