高超声速飞行器气动弹性的近期进展与发展展望

Progress and prospects on aeroelasticity of hypersonic vehicles

  • 摘要: 近年来高超声速飞行器气动弹性(尤其是热气动弹性)问题的关注度不断增强,相关内容已成为学术界的重点研究方向。本文旨在总结高超声速气动弹性问题的近期研究成果,并对进一步发展做出展望。首先从三个方面综述了气动弹性的计算方法:气动力的计算、常温下气动弹性求解方法及热环境下气动弹性的研究方法。然后,按照工程实际中出现的相关问题,将高速飞行器的热气动弹性问题分为与外流相关的飞行器热气动弹性问题以及与内流道相关的热气动弹性问题,分别探讨其研究情况及未来发展。其中,比较详细地论述了围绕发动机相关的热气动弹性问题(包括冲压发动机内部的壁板颤振和火箭发动机喷管的气动弹性),指出该问题有可能成为未来一个重要的研究范畴。

     

    Abstract: The aeroelasticity (especially the aerothermoelasticity) of the high-speed aircraft is raising more and more attention in recent years. First of all, this paper summarizes the recent progress of the aeroelasticity problems according to different numerical methodologies. Then, based on the problems emerging in engineering practice, the thermal aeroelastic problems of high-speed vehicles are divided into issues related to thermal aeroelasticity of the aircraft and the thermal aeroelasticity of the inner runners, and their research status and future development are discussed. Particularly, the aerothermoelasticity problems related to the engine (including the panel flutter inside the ramjet engine and the aeroelasticity of the rocket engine nozzle) are investigated in detail and the significance of this issue in future work is pointed out.

     

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