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Experimental study of mode transition characteristics of a cavity-based scramjet combustor during acceleration
Meng Y(孟宇); Gu HB(顾洪斌); Zhuang JH(庄金衡); Sun WM(孙文明); Gao ZB(高占彪); Lian H(连欢); Yue LJ(岳连捷); Chang XY(张新宇)
Source PublicationAerospace Science and Technology
2019-09-30
Volume93Issue:10Pages:UNSP 105316
Abstract

Experiments were performed in a direct-connect supersonic combustion test facility to simulate scramjet combustor acceleration in high altitude. The combustor inlet flow Mach number increased from 2.40 to 2.94, and the flowrate and total temperature simultaneously changed with Ma. The combustor has two cavities and fuel jets. The fuel used is room-temperature liquid kerosene RP3. Mode transition is seen to occur in the first cavity during acceleration, and pressure fluctuations occur in the transitions from both the ram mode to the transition mode and from the transition mode to the scram mode, indicating that the mode transition process is unstable. When the mode transition occurs upstream, the downstream ram mode has the effect of eliminating instability; therefore, the engine’s overall thrust performance is stable. When the downstream is also in the transition mode, the thrust fluctuates, indicating that the mode transition is an unstable process.

KeywordScramjet Combustor Mode Transition Liquid Kerosene Acceleration
DOI10.1016/j.ast.2019.105316
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000494883800021
DepartmentLHD高超声速推进技术
Classification二类
Ranking1
Contributor顾洪斌
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79771
Collection高温气体动力学国家重点实验室
Corresponding AuthorGu HB(顾洪斌)
Affiliation1.Institute of Mechanics CAS
2.School of Engineering Science, University of Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Meng Y,Gu HB,Zhuang JH,et al. Experimental study of mode transition characteristics of a cavity-based scramjet combustor during acceleration[J]. Aerospace Science and Technology,2019,93(10):UNSP 105316.
APA Meng Y.,Gu HB.,Zhuang JH.,Sun WM.,Gao ZB.,...&Chang XY.(2019).Experimental study of mode transition characteristics of a cavity-based scramjet combustor during acceleration.Aerospace Science and Technology,93(10),UNSP 105316.
MLA Meng Y,et al."Experimental study of mode transition characteristics of a cavity-based scramjet combustor during acceleration".Aerospace Science and Technology 93.10(2019):UNSP 105316.
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