Experimental study on the shock wave structure and cell characteristics of oblique detonation induced by high-speed projectiles

SHANG Jiahao; WANG Qiu; ZHAO Wei; ZHANG Kun; WEI Bingchen

doi:10.7638/kqdlxxb-2025.0092

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Experimental study on the shock wave structure and cell characteristics of oblique detonation induced by high-speed projectiles

更新时间：2026-05-28

- Experimental study on the shock wave structure and cell characteristics of oblique detonation induced by high-speed projectiles
- Vol. 43, Issue 10, Pages: 95-105(2025)
- 作者机构：
  
  1. 中国科学院力学研究所，空天飞行高温气动全国重点实验室,北京,100190
  2. 中国科学院力学研究所，国家微重力实验室,北京,100190
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2025.0092
  CLC： V231.3
- Published：2025
- 稿件说明：
移动端阅览
尚甲豪, 汪球, 赵伟, 等. 高速弹丸诱导斜爆轰激波结构和胞格信息的实验研究[J]. 空气动力学学报, 2025, 43(10): 95−105.

SHANG Jiahao, WANG Qiu, ZHAO Wei, et al. Experimental study on the shock wave structure and cell characteristics of oblique detonation induced by high-speed projectiles[J]. 2025, 43(10): 95-105.
尚甲豪, 汪球, 赵伟, 等. 高速弹丸诱导斜爆轰激波结构和胞格信息的实验研究[J]. 空气动力学学报, 2025, 43(10): 95−105. DOI： 10.7638/kqdlxxb-2025.0092

SHANG Jiahao, WANG Qiu, ZHAO Wei, et al. Experimental study on the shock wave structure and cell characteristics of oblique detonation induced by high-speed projectiles[J]. 2025, 43(10): 95-105. DOI： 10.7638/kqdlxxb-2025.0092.

摘要

斜爆轰推进作为一种具有良好应用前景的高速推进技术，其波面结构与传播特性研究具有重要意义。本文基于氢氧爆轰驱动二级轻气炮，开展了高速球形弹丸诱导斜爆轰波的实验研究，利用激光阴影成像与烟迹法对斜爆轰波的激波结构及横波传播过程进行了测量与分析。实验中在不同初始工况下观测到两类典型的斜爆轰波结构：驻定斜爆轰波和草帽形斜爆轰波。胞格结构测量结果表明，斜爆轰波波面存在3种典型胞格形态，包括三角形、菱形和五边形。横波传播特性分析显示，驻定斜爆轰波的胞格宽度与对应初始状态下的正爆轰波相近，但其横波传播速度明显高于正爆轰波；而草帽形斜爆轰波受弓形激波对可燃气体预热作用影响，其横波尺寸明显减小。

Abstract

Oblique detonation propulsion is a promising technology for hypersonic flight

and understanding the structure and propagation characteristics of oblique detonation waves is of critical importance. In this study

experimental investigations were conducted on oblique detonation waves induced by high-speed spherical projectiles using the hydrogen-oxygen detonation driven two-stage light gas gun. The shock wave structures and transverse wave propagation processes were measured and analyzed using laser shadowgraphy and soot foil techniques. Under varying initial conditions

two typical oblique detonation wave structures were observed: stabilized oblique detonation waves and bow-shaped oblique detonation waves. Measurements of the cellular structures revealed three distinct cell morphologies along the detonation front: triangular

diamond-shaped

and pentagonal. Analysis of the transverse wave characteristics indicated that the cell width of the stabilized oblique detonation wave is comparable to that of the corresponding normal detonation wave under the same initial conditions

but with significantly higher transverse wave propagation velocities. In contrast

the transverse wave size of the bow-shaped oblique detonation wave was significantly reduced due to the preheating effect of the bow shock on the combustible gas. These findings provide experimental insights into the structural diversity and dynamic behavior of oblique detonation waves under projectile-induced conditions

contributing to the fundamental understanding of hypersonic detonation phenomena.

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references

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