中文摘要：

建立了新的导管桨优化设计模型。该模型采用试验设计方法（DOE,design of experiment）在设计空间中均匀采样,捕捉整个设计空间中最有效的设计区域,进而用梯度优化算法在有效设计区域中进行优化设计。经计算实例证明：该算法可以辨识各因子对设计目标的影响系数,从而减少导管桨约束优化问题的计算时间,更有效地解决复杂的非线性优化问题。

英文摘要：

An optimal design of ducted propeller is established.The DOE（design of experiment）is adopted to take uniform samples from the design space to identify the most effective area for design.Then,the gradient optimization algorithm is used for optimizing the results in the effective area of the design.The numerical example proves that this method can effectively solve the complicated problem of nonlinear optimal design by identifying the factors affecting the design and reducing the calculating time of ducted propeller restraint optimization.