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    • 1. 发明公开
    • AIRCRAFT WING ROUGHNESS STRIP
    • 飞机WING ROUGHNESS STRIP
    • EP3213991A1
    • 2017-09-06
    • EP17158776.9
    • 2017-03-01
    • Airbus Group Limited
    • ROLSTON, Stephen
    • B64C21/10B64C30/00B64C3/00B64C3/26
    • B64C21/10B64C3/00B64C3/10B64C3/26B64C30/00B64C39/024B64C2003/148B64C2003/149B64C2230/08Y02T50/12Y02T50/166
    • A fixed wing aircraft has a wing with an aerofoil cross-section defining an upper geometric surface and a lower geometric surface which meet at a geometric leading edge of the wing at the intersection with the aerofoil geometric chord. The wing is configured to define an upper aerodynamic surface and a lower aerodynamic surface when the wing is moved through air. The upper aerodynamic surface and the lower aerodynamic surface meet at an aerodynamic leading edge of the wing at the intersection with an attachment line dividing the air that passes over the upper aerodynamic surface from the air that passes over the lower aerodynamic surface. The lower geometric surface adjacent the geometric leading edge has a roughness strip with a step height of at least 50 microns over the lower geometric surface. The roughness strip is located on the lower aerodynamic surface of the wing when the aircraft is flown at a load factor -the ratio of the lift of the aircraft to its weight - of 1g, and the roughness strip is located on the upper aerodynamic surface when the aircraft is flown at a load factor of 1.2g or more.
    • 固定翼飞机具有机翼横截面,所述机翼横截面限定上部几何表面和下部几何表面,所述上部几何表面和下部几何表面在与机翼几何弦的相交处的机翼的几何前缘处相交。 机翼被配置成当机翼通过空气移动时限定上部空气动力学表面和下部空气动力学表面。 上部空气动力学表面和下部空气动力学表面在机翼的空气动力学前缘处与连接线相遇,所述连接线将穿过上部空气动力学表面的空气与经过下部空气动力学表面的空气分开。 邻近几何前缘的下几何表面具有在下几何表面上具有至少50微米的台阶高度的粗糙带。 当飞机以负载系数(飞机升力与其重量之比)为1g飞行时,粗糙带位于机翼的下部空气动力学表面上,并且粗糙带位于上部空气动力学表面上时 该飞机以1.2g或更高的载荷系数飞行。