航空学报 > 2018, Vol. 39 Issue (3): 121553-121553   doi: 10.7527/S1000-6893.2017.21553

一种近空间高超声速飞行器滚转稳定性研究

李乾, 赵忠良, 王晓冰, 李玉平, 马上   

  1. 中国空气动力研究与发展中心 高速空气动力研究所, 绵阳 621000
  • 收稿日期:2017-06-28 修回日期:2017-11-17 出版日期:2018-03-15 发布日期:2017-11-17
  • 通讯作者: 赵忠良,E-mail:zzzhao_cardc@sina.com E-mail:zzzhao_cardc@sina.com
  • 基金资助:
    国家自然科学基金(91216203,11532016)

Rolling stability research of a near space hypersonic vehicle

LI Qian, ZHAO Zhongliang, WANG Xiaobing, LI Yuping, MA Shang   

  1. High Speed Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2017-06-28 Revised:2017-11-17 Online:2018-03-15 Published:2017-11-17
  • Supported by:
    National Natural Science Foundation of China (91216203,11532016)

摘要: 研究近空间高升阻比构型高超声速飞行器面临的复杂稳定性问题,对其机动飞行安全和操控具有重要意义。为此,通过静、动态风洞试验和数值模拟,开展了类HTV-2飞行器布局典型马赫数和迎角下,滚转方向静稳定性、单自由度和两自由度俯仰/滚转耦合运动动稳定性研究。结果表明:飞行器滚转方向为静稳定;自由振动的滚转单自由度运动为衰减振动曲线,动导数为负值,表现为动稳定;强迫俯仰/自由滚转两自由度耦合运动情况下,由于惯性力矩和非对称滚转力矩共同作用,导致滚转出现振幅周期性变化的极限环运动,甚至失稳发散。

关键词: 近空间, 高超声速, 静稳定性, 动稳定性, 两自由度

Abstract: It is of great significance for flight safety and maneuvering capability to study the complex stability problem of near space hypersonic vehicles with high ratio of lift to drag. Therefore, through static and dynamic wind tunnel tests and numerical simulation, a study on the static stability in the rolling direction and the dynamic stability of the single-degree-of-freedom and the coupled two-degrees-of-freedom pitching/rolling motion is carried out for the HTV-2 like vehicle under the typical Mach number and angle of attack. The result shows that the vehicle is in static stability in the rolling direction, and the motion of free vibration of single rolling freedom shows an attenuation vibration curve which meets the fact that the vehicle is dynamically stable with negative dynamic derivative in the rolling direction. But under the condition of forced-pitch/free-roll coupled motion with two degrees of freedom, the rolling direction may come into the limit cycle motion with periodical changing amplitude and even lose its stability due to interaction of inertia moment and asymmetric rolling moment.

Key words: near space, hypersonic, static stability, dynamic stability, two degrees of freedom

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