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Effects of Rolling Movement on the Aerodynamic Characteristics of Waverider Aircraft
Authors
丁海河
康宏琳
王发民
郭迪龙
Publication date
25 July 2008
Publisher
Abstract
乘波飞行器运动过程中的非定常气动特性是高超声速飞行中的重要物理问题之一。采用数值模拟方法模拟了乘波飞行器在固定迎角下绕其对称轴强迫滚转运动这一过程。比较了在不同频率和滚转角下乘波飞行器的气动特性。计算格式采用AUSM类格式中最新的AUSM~+-up格式。计算结果表明:AUSM~+-up能很好地模拟飞行器滚转运动这一非定常过程;滚转运动时,所设计的乘波飞行器能使高压气体很好地附着在乘波飞行器下表面从而使其具有较好的气动特性;当频率较大时,乘波飞行器由于角速度的诱导作用会导致升力出现迟滞现象;做滚转运动时,滚转力矩小于零,产生正阻尼,乘波飞行器不会产生"摇滚"运动
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018