Oblique detonation engine: Initiation and stabilization of oblique detonation waves in confined spaces

ZHANG Zijian; WEN Chiyung

doi:10.7638/kqdlxxb-2025.0102

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Oblique detonation engine: Initiation and stabilization of oblique detonation waves in confined spaces

更新时间：2026-05-28

- Oblique detonation engine: Initiation and stabilization of oblique detonation waves in confined spaces
- Vol. 43, Issue 9, Pages: 65-91(2025)
- 作者机构：
  
  1. 北京理工大学宇航学院,北京,100081
  2. 临近空间环境特性及效应全国重点实验室,北京,100081
  3. 香港理工大学航空及民航工程学系,香港
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2025.0102
  CLC： V231.3;O354.5
- Published：2025
- 稿件说明：
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张子健, 温志湧. 斜爆轰发动机：斜爆轰波在受限空间中的起爆与稳定[J]. 空气动力学学报, 2025, 43(9): 65−91.

ZHANG Zijian, WEN Chiyung. Oblique detonation engine: Initiation and stabilization of oblique detonation waves in confined spaces[J]. 2025, 43(9): 65-91.
张子健, 温志湧. 斜爆轰发动机：斜爆轰波在受限空间中的起爆与稳定[J]. 空气动力学学报, 2025, 43(9): 65−91. DOI： 10.7638/kqdlxxb-2025.0102

ZHANG Zijian, WEN Chiyung. Oblique detonation engine: Initiation and stabilization of oblique detonation waves in confined spaces[J]. 2025, 43(9): 65-91. DOI： 10.7638/kqdlxxb-2025.0102.

摘要

斜爆轰利用激波实现超声速气流的自增压燃烧，从而高效、快速地将化学能转化为机械能。以斜爆轰为核心燃烧组织方式的发动机，具有比冲高、可用马赫数范围广、结构紧凑等优点，被视为吸气式高马赫数推进系统极具前景的解决方案。然而，这种发动机的核心难点在于实现斜爆轰波的可靠起爆和稳定维持。由于发动机燃烧室流道空间受限，斜爆轰现象表现出与传统非受限空间不同的起爆和稳定特性。例如，有限的流道长度可能无法满足斜爆轰波起爆所需的流向距离，从而导致起爆失败或燃烧不充分；此外，燃烧室壁面的侧向约束也可能导致斜爆轰波失稳并发生前传，进而影响发动机的正常工作。因此，深入研究受限空间条件下斜爆轰波的起爆与稳定特性、流动机理及相应的流动控制方法，对于推动斜爆轰技术在推进系统中的应用至关重要。本文旨在综述受限空间斜爆轰波起爆与稳定两方面的研究进展，并在此基础上，对斜爆轰发动机在这两个方面的研究进行展望。

Abstract

Oblique detonation utilizes shock waves to achieve self-pressurized combustion in supersonic flow

enabling high-efficiency and rapid conversion of chemical energy into mechanical energy. Employing oblique detonation as the core mode for combustion organization

oblique detonation engine offers advantages such as high specific impulse

wide operable Mach number range

and compact structure

making it a highly promising solution for air-breathing high-Mach-number propulsion systems. However

the key challenges of this type of engine lie in the reliable initiation and sustained stabilization of oblique detonation waves. Due to spatial confinement of flow path in the engine combustor

the oblique detonation phenomenon exhibits different initiation and stabilization characteristics from those in conventional unconfined spaces. For example

the limited flow path length may fail to meet the streamwise distance required for oblique detonation wave initiation

leading to failed initiation or insufficient combustion. Additionally

flow constraint in the transverse directions by the combustor walls may cause destabilization and upstream propagation of oblique detonation waves

violating the normal operation of engines. Therefore

in-depth research on the initiation and stabilization characteristics

flow mechanisms

and corresponding flow control methods of oblique detonation waves under space-confined conditions is of great importance to advance the applications of oblique detonation technology in propulsion systems. This paper aims to review the research progress on both the initiation and stabilization of oblique detonation waves in confined spaces

thereby providing insights for future research on oblique detonation engines regarding these two aspects.

关键词

Keywords

references

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