Influence of the Multicavity Shape on the Solid Scramjet

In this paper, a modular solid scramjet combustor with multicavity was proposed. The influence of multicavity shape on the performance of solid scramjet was investigated by the direct-connected tests. The experiments simulated a flight Mach 5.5 at 25 km. The boron-based fuel-rich propellant was used...

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Autores principales:	Pengnian Yang, Zhixun Xia, Likun Ma, BinBin Chen, Yunchao Feng, Chaolong Li, Libei Zhao
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/be76f0787b2d4d5e91a94f263d316635
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spelling	oai:doaj.org-article:be76f0787b2d4d5e91a94f263d3166352021-11-08T02:35:15ZInfluence of the Multicavity Shape on the Solid Scramjet1687-597410.1155/2021/9718537https://doaj.org/article/be76f0787b2d4d5e91a94f263d3166352021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/9718537https://doaj.org/toc/1687-5974In this paper, a modular solid scramjet combustor with multicavity was proposed. The influence of multicavity shape on the performance of solid scramjet was investigated by the direct-connected tests. The experiments simulated a flight Mach 5.5 at 25 km. The boron-based fuel-rich propellant was used. The microstructure of combustion products was analyzed by SEM. The experimental results show that the fuel-rich mixture produced by the gas generator would ignite rapidly in the solid scramjet combustor. The combustion process showed a typical characteristic of establishment-development-maintenance-attenuation. Compared to the flame-holding cavity, the other shapes of cavities, e.g., narrow and lobe, can improve mixing and combustion. In our experiment, the combustion efficiency increased from 0.41 to 0.48, and the total pressure recovery was 0.36. In summary, the proposed solid scramjet combustor can effectively solve the ignition delay problem of the fuel-rich mixture, and the narrow/lobe cavity shows the ability to improve the mixing and combustion of the fuel-rich mixture.Pengnian YangZhixun XiaLikun MaBinBin ChenYunchao FengChaolong LiLibei ZhaoHindawi LimitedarticleMotor vehicles. Aeronautics. AstronauticsTL1-4050ENInternational Journal of Aerospace Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	Motor vehicles. Aeronautics. Astronautics TL1-4050 Pengnian Yang Zhixun Xia Likun Ma BinBin Chen Yunchao Feng Chaolong Li Libei Zhao Influence of the Multicavity Shape on the Solid Scramjet
description	In this paper, a modular solid scramjet combustor with multicavity was proposed. The influence of multicavity shape on the performance of solid scramjet was investigated by the direct-connected tests. The experiments simulated a flight Mach 5.5 at 25 km. The boron-based fuel-rich propellant was used. The microstructure of combustion products was analyzed by SEM. The experimental results show that the fuel-rich mixture produced by the gas generator would ignite rapidly in the solid scramjet combustor. The combustion process showed a typical characteristic of establishment-development-maintenance-attenuation. Compared to the flame-holding cavity, the other shapes of cavities, e.g., narrow and lobe, can improve mixing and combustion. In our experiment, the combustion efficiency increased from 0.41 to 0.48, and the total pressure recovery was 0.36. In summary, the proposed solid scramjet combustor can effectively solve the ignition delay problem of the fuel-rich mixture, and the narrow/lobe cavity shows the ability to improve the mixing and combustion of the fuel-rich mixture.
format	article
author	Pengnian Yang Zhixun Xia Likun Ma BinBin Chen Yunchao Feng Chaolong Li Libei Zhao
author_facet	Pengnian Yang Zhixun Xia Likun Ma BinBin Chen Yunchao Feng Chaolong Li Libei Zhao
author_sort	Pengnian Yang
title	Influence of the Multicavity Shape on the Solid Scramjet
title_short	Influence of the Multicavity Shape on the Solid Scramjet
title_full	Influence of the Multicavity Shape on the Solid Scramjet
title_fullStr	Influence of the Multicavity Shape on the Solid Scramjet
title_full_unstemmed	Influence of the Multicavity Shape on the Solid Scramjet
title_sort	influence of the multicavity shape on the solid scramjet
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/be76f0787b2d4d5e91a94f263d316635
work_keys_str_mv	AT pengnianyang influenceofthemulticavityshapeonthesolidscramjet AT zhixunxia influenceofthemulticavityshapeonthesolidscramjet AT likunma influenceofthemulticavityshapeonthesolidscramjet AT binbinchen influenceofthemulticavityshapeonthesolidscramjet AT yunchaofeng influenceofthemulticavityshapeonthesolidscramjet AT chaolongli influenceofthemulticavityshapeonthesolidscramjet AT libeizhao influenceofthemulticavityshapeonthesolidscramjet
_version_	1718443310487437312

Influence of the Multicavity Shape on the Solid Scramjet

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