Effects of unsteady freestream on aerodynamic characteristics of pitching delta wing

被引：0
|
作者：
Shi, Zhi-Wei [1 ,2 ]
Ming, Xiao [1 ,2 ]
机构：
[1] Nanjing University of Aeronautics and Astronautics, 210016 Jiangsu, China
[2] College of Aerospace Engineering
来源：
Journal of Aircraft | 1600年 / 45卷 / 06期
关键词：
An experimental apparatus was setup for a pitching motion in the unsteady wind tunnel in Nanjing University of Aeronautics and Astronautics; to study the unsteady behavior of a pitching-motion delta wing in an unsteady freestream. Experiments were conducted in a low-speed unsteady wind tunnel with a cross-sectional area of 1.01.5m and the variation in freestream speed was measured by the hot-wire anemometer. The results show that freestream decelerates with the delta wing pitching up; whereas the freestream accelerates with the delta wing pitching down. It is also seen that there are no hysteresis loops; not only in the pitching-alone test but also in the combined motion test. The angle at which the lift coefficient recovers to a steady state value is delayed by the accelerating freestream; when the delta wing pitched down;
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摘要：
Journal article (JA)
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页码：2182 / 2185
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