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An Experimental Investigation of a High Lift Device on the Owl Wing.

机译：猫头鹰翼高升力装置的试验研究。

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A study was made of the aerodynamic function of the comblike fixtures found on the leading edge of owl wings. Microphotographs of an owl's wing showed the comb to resemble a row of spanwise twisted airfoils oriented to form a cascade. Smoke flow visualization tests on an owl wing showed that the comb acts as a cascade which turns the flow close to the wing leading edge in a spanwise direction. Flow visualization experiments were run using flat plate and cambered airfoils with combs in a low speed three-dimensional wind tunnel. Results showed that the leading edge comb produced a stationary spanwise vortex that delays flow separation at high angles of attack. The high lift device was related to the vortex lift phenomena observed on delta wing aircraft. The comb's small relative size, simple structure, and lack of moving parts may make it attractive for aircraft use. (Author) Portions of this document are not fully legible.

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作者
Anderson, G. W.;
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年度 1973
页码 1-89
总页数 89
原文格式 PDF
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关键词
Wings; Aerodynamic characteristics; Birds; Flight; Bionics; Aerodynamic configurations; Aerodynamic control surfaces; Cascade structures; Cascades(Fluid dynamics); Vortex shedding; Flow visualization; Theses; Delta wings; Owls; Bird aerodynamics;

机译：翅膀;空气动力学特性;鸟类;飞行;仿生学;空气动力学配置;空气动力学控制表面;级联结构;叶栅（流体动力学）;涡旋脱落;流动可视化;论文;三角翼;猫头鹰;鸟类空气动力学;

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An Experimental Investigation of a High Lift Device on the Owl Wing.

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