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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2018, Vol. 39 ›› Issue (3): 121553-121553.doi: 10.7527/S1000-6893.2017.21553

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

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)

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

CLC Number: