CAJ | 학술논문

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。
침대익조포국비궤복잡기동외형，건립료기우양조（NURBS，비균균유리B양조）곡면화곡면첩가기술적곡면변형방법。재대양조곡선성질분석적기출상，이DLR-F6비궤위실례，대기궤익익근、단창괘가국부진행곡면망격변형，결과표명해방법능유효표술기복잡궤하외형급형면변화특성，병차구유교호적국역성、가공성화광활성。해방법가유효응용우조창괘가등복잡기동외형적건모、표면망격변형급기동외형우화설계등。
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.