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通过风洞测力实验,研究了40°后掠角不同前缘形状对三角翼气动特性的影响。实验结果表明:前缘背风面倒角机翼的升阻比最大,而前缘迎风面倒角机翼的升阻比最小。相同前缘形状倒角机翼,其倒角值的变化对三角翼升力特性的影响不大。小迎角下,前缘迎风面倒角机翼的升力系数略高于其余不同前缘形状的三角翼。
Through the wind tunnel force test, the influence of different leading edge shape with 40 ° sweep angle on the aerodynamic characteristics of the delta wing was studied. The experimental results show that the lift-drag ratio of the front leeward chamfered wing is the largest, while the lift-drag ratio of the front windward chamfered wing is the smallest. The chamfered wing with the same leading edge shape has little effect on the lift characteristics of the delta wing due to its chamfer value. At small angles of attack, the lift coefficient of the front windward chamfered wing is slightly higher than that of the delta wing with the remaining different leading edge shapes.