CAJ | 학술논문

研究了基本 Bezier 样条曲线的特性，对比了不同阶次 Bezier 曲线对超临界翼型的几何描述能力以及由几何偏差带来的气动性能的偏差。利用 Bezier 曲线的特性提出逐次升阶的翼型参数化方法，结合改进的粒子群优化算法，建立了逐步扩展设计空间的气动优化设计方法，兼顾设计空间和优化效率，很好地解决了设计质量和设计效率之间的矛盾。最后通过典型翼型的优化设计，对比了文中方法与传统 Hicks-Henne 型函数方法，验证了文中方法的可行性和高效性。
연구료기본 Bezier 양조곡선적특성，대비료불동계차 Bezier 곡선대초림계익형적궤하묘술능력이급유궤하편차대래적기동성능적편차。이용 Bezier 곡선적특성제출축차승계적익형삼수화방법，결합개진적입자군우화산법，건립료축보확전설계공간적기동우화설계방법，겸고설계공간화우화효솔，흔호지해결료설계질량화설계효솔지간적모순。최후통과전형익형적우화설계，대비료문중방법여전통 Hicks-Henne 형함수방법，험증료문중방법적가행성화고효성。
The number of design variables and their design room are focused on in airfoil pa-rameterization.Fewer variables helps improve the speed of convergence and adequate design room can help to find the best result.However,they contradict with each other.A research was carried on the performances of basic Bezier-Spline curves and a comparison was presented between different orders of Bezier-Spline curves in order to explain their ability of describing a supercritical airfoil and aerodynamic errors as a result of geometric errors.An adding-order airfoil parameter-ization method was put forward based on the characteristics of Bezier-Spline curves.An optimiza-tion design system of expanding design room was established combined with improved particle swarm optimization algorithm which guarantees design room and efficiency.The method balances the inconsistency of design quality and efficiency.By comparing the results of a typical airfoil op-timization using the proposed method and the traditional Hicks-Henne model function method, feasibility and high efficiency of this method is verified.