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双三角机翼比三角机翼气动布局具有更优越的升阻特性.飞机空气动力的工程计算是用数值方法寻求飞机最优设计方案的基础.采用基于面积比思想的半经验工程算法计算了双三角翼飞机的升力系数曲线斜率、零升阻力系数和诱导阻力因子.结果经风洞试验数据校验,精度完全能满足飞机方案设计要求.算法在某改型飞机方案设计中得到了成功的应用
The double-delta wing has more superior lift-drag characteristics than the triangular wing aerodynamic design.Airodynamic aerodynamic engineering calculation is the numerical method to find the optimal design plan of the aircraft.Based on the semi-empirical engineering algorithm based on the area ratio, The slope of lift coefficient curve, the drag coefficient of zero lift and the induced resistance factor of the delta wing aircraft were obtained.Results The wind tunnel test data verified that the accuracy can fully meet the requirements of the aircraft design.The algorithm has been successfully applied in the design of a modified aircraft