摘要
在FL-23风洞中开展了80°/65°双三角翼大迎角下的滚转特性研究,包括静态测力试验,动导数试验和自由滚转试验,通过静态测力试验及动导数试验获得了双三角翼模型在大迎角条件下的滚转力矩特性以及动导数特性,从而对双三角翼大迎角条件下的滚转运动特性进行了预测,最后通过自由摇滚试验对预测结果进行了验证。研究结果表明随着模型迎角的增加,双三角翼呈现不同的滚转运动形态,包括静态稳定、双周期震荡、准极限环摇滚,通过静态气动力及动导数可以较准确地对模型的运动形态及对应的迎角范围进行预测。
oub yna rive. bout ding The le delta wing at high angle of attack are conducted in FL-23 high speed wind tunnel mic behaviors are forecast based on the static roll moment coefficients and dynamic The results show that dynamic motions obtained on a double delta wing was free to r its longitudinal axis at different angles of attack. Different dynamic rolling motion the static stability, double periodic oscillation, quasi limit-cycle rock motion were ob forecast results meet the free to roll result well.80°/65°, which deriva- orate as inclu- served.
出处
《实验流体力学》
CAS
CSCD
北大核心
2013年第6期43-46,共4页
Journal of Experiments in Fluid Mechanics
基金
国家973项目(61389)
国家自然科学基金(91216203
11372337)
关键词
动导数
双三角翼
准极限环
自激摇滚
dynamic stability derivatives
double delta wing
quasi-limit-cycle
autonomous
