高总温来流下的连续旋转爆震验证试验

发布时间：2018-02-22 03:46

本文关键词： 连续旋转爆震爆震推进吸气式推进验证试验　出处：《推进技术》2016年03期 　论文类型：期刊论文

【摘要】：为验证吸气式连续旋转爆震推进的可行性,在直连式试验台上开展了连续旋转爆震试验。采用三组元空气加热器模拟吸气式推进时的高总温来流,其设计流量600g/s,总温860K。采用热射流切向喷注的方法成功起爆了H2/air连续旋转爆震波,并实现了稳定自持传播。在H2/air当量比为0.86时,连续旋转爆震波以单个波头的同向传播模态传播,且其未影响到空气加热器的正常工作。爆震波的传播频率为3.68k Hz,与高频压力FFT分析所得的主频3.67k Hz吻合较好;爆震波传播速度为1248m/s。在未测量高频压力的情况下开展了长程试验,结果表明,在高总温来流条件下,连续旋转爆震波也可以在更长时间范围内稳定工作。
[Abstract]:In order to verify the feasibility of continuous rotary detonation propulsion, a continuous rotary detonation test was carried out on a direct-connected test rig. The air heater with three components was used to simulate the high total temperature flow during the suction propulsion. The designed flow rate is 600g / s and the total temperature is 860K. the continuous rotating detonation wave of H _ 2 / air is detonated successfully by the method of hot jet tangential injection, and the steady self-sustained propagation is realized. When the equivalent ratio of H _ 2 / air is 0.86, the continuously rotating detonation wave propagates in the same propagating mode of a single wave head. The propagation frequency of detonation wave is 3.68kHz, which is in good agreement with the main frequency 3.67kHz obtained by FFT analysis of high frequency pressure, and the propagation velocity of detonation wave is 1248m / s. A long range experiment has been carried out without measuring the high frequency pressure. The results show that under the condition of high total temperature, continuous rotating detonation waves can also work stably in a longer time range.
【作者单位】：国防科学技术大学高超声速冲压发动机技术重点试验室;
【基金】：国家自然科学基金资助项目(51306202;91216120)
【分类号】：V231.22

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