层流机翼可以显著减少飞机的气动阻力,层流机翼的参数选择受到飞机总体参数的影响,同时需要和增升装置开展协同设计。采用前缘克鲁格和后缘富勒襟翼方案,首先对巡航构型的干净翼型和着陆构型的多段翼型开展嵌套协同优化。在此基础上,针对三维层流机翼和增升装置,通过自由转捩RANS计算和基于响应面的高效多级优化相结合的方法,实现了融合增升装置的层流机翼气动设计。
The laminar wing technology can reduce the drag of the aircraft significantly. Selection of laminar wing parameters is affected by the overall parameters of the aircraft. Collaborative design of the laminar wing with its high-lift devices also needs to be carried out. Firstly, the clean airfoil of cruise configuration and the multi-segment airfoil of landing configuration are optimized by using leading-edge Kruger flaps and trailing-edge Fowler flaps. On this basis, the aerodynamic design for the three-dimensional laminar wing and its high-lift devices is realized through combination of RANS calculation of free transition and the efficient multi-level optimization based on the response surface.
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