摘要
对高超声速飞行器进行了非对称转捩对飞行器稳定性的影响研究,并通过风洞试验对纵向绊线促发和抑制转捩的方法进行了研究。研究结果表明:高超声速飞行器的横侧向稳定性较差,其主要原因是头部绕流的横向扰动,其中非对称转捩是最重要原因之一。横侧向失稳可能造成飞行器的螺旋运动。采用纵向绊线可以促使横向流的固定转捩,并降低横向流转捩的不对称性,增强高超声速飞行器的横侧向稳定性。
This paper deals with the stability of hypersonic configurations with asymmetric transition,and conducts wind tunnel tests to explore longitudinal trip thread＇s effects on spurring or suppressing transition.The results show that the lateral stability of hypersonic aircrafts is very weak,the main reason for this is lateral perturbation of flow over the nose,among which asymmetric transition weigh the most.Lose of lateral stability may cause spiral motion of aircrafts.Adoption of longitudinal trip thread could spur fixed transition of lateral flow,reduce the transition asymmetry of lateral flow,and strengthen the lateral stability of hypersonic aircrafts at the same time.
出处
《战术导弹技术》
2012年第6期12-15,共4页
Tactical Missile Technology
关键词
高超声速飞行器
动稳定性
非对称转捩
风洞试验
hypersonic aircrafts
dynamic stability
asymmetric transition
wind-tunnel experiment
