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Title:
Concept of non-ablative thermal protection system for hypersonic vehicles
Author: Liu YF(刘云峰); Jiang ZL(姜宗林)
Source: AIAA Journal
Issued Date: 2013-03
Volume: 51, Issue:3, Pages:584-590
Abstract: In order to reduce the shock-wave drag and aerodynamic heating of hypersonic vehicles effectively a new concept of non-ablative thermal protection system was proposed based on the idea of flowfield reconstruction. In this non-ablative thermal protection system a spike-blunt body structure and lateral jets are combined together to realize the flowfield modification. The spike transforms the bow shock into a conical shock, and the lateral jets increase the angle of conical shock wave and keep it away from the blunt body to avoid severe shock/shock interactions. Flow visualizations and pressure measurements were conducted in a hypersonic wind tunnel at Mach number 6 to demonstrate this concept. Numerical simulations were also carried out. Both experimental and numerical results demonstrate that the non-ablative thermal protection system works well for shock-wave drag reduction and thermal protection. The peak pressure at the reattachment region is reduced by 65% even under 4 deg attack angle by the lateral jet. Experimental data also show that the working pressure of lateral jets is much lower than that of forward-facing jets at the stagnation point. All the results show that the engineering application of non-ablative thermal protection system appears to be quite promising.
Keyword: Flow fields ; Flow visualization ; Hypersonic aerodynamics ; Hypersonic vehicles ; Mach number ; Shock waves ; Thermal insulating materials ; Engineering applications ; Experimental datum ; Hypersonic wind tunnels ; Numerical results ; Stagnation points ; Thermal protection ; Thermal Protection System ; Working pressures
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Jiang, ZL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temperature Gas Dynam, Beijing 100190, Peoples R China.
Correspondent Email: yfliu.lhd@gmail.com; zljiang@imech.ac.cn
DOI: 10.2514/1.J051875
Related URLs: 查看原文
DOC Type: Article; Proceedings Paper
WOS Subject: Engineering, Aerospace
WOS Subject Extended: Engineering
WOS Keyword Plus: WAVE DRAG REDUCTION ; HEAT-TRANSFER ; ENERGY DEPOSITION ; SUPERSONIC-FLOW ; SHOCK-WAVE ; MITIGATION ; BODIES ; SPIKE ; JET
WOS ID: WOS:000315551200004
ISSN: 0001-1452
Rank: [Liu, Yunfeng; Jiang, Zonglin] Chinese Acad Sci, Inst Mech, State Key Lab High Temperature Gas Dynam, Beijing 100190, Peoples R China
Subject: 流体力学::空气动力学
Department: LHD激波与爆轰物理
Classification: 一类
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/47144
Appears in Collections:高温气体动力学国家重点实验室_期刊论文

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Recommended Citation:
Liu YF,Jiang ZL. Concept of non-ablative thermal protection system for hypersonic vehicles[J]. AIAA Journal,2013-03-01,51(3):584-590.
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