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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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/9718537 |
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| _version_ | 1850179117461274624 |
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| 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 |
| collection | DOAJ |
| 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 |
| id | doaj-art-be76f0787b2d4d5e91a94f263d316635 |
| institution | OA Journals |
| issn | 1687-5974 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-be76f0787b2d4d5e91a94f263d3166352025-08-20T02:18:35ZengWileyInternational Journal of Aerospace Engineering1687-59742021-01-01202110.1155/2021/97185379718537Influence of the Multicavity Shape on the Solid ScramjetPengnian Yang0Zhixun Xia1Likun Ma2BinBin Chen3Yunchao Feng4Chaolong Li5Libei Zhao6College of Aerospace Science and EngineeringCollege of Aerospace Science and EngineeringCollege of Aerospace Science and EngineeringCollege of Aerospace Science and EngineeringCollege of Aerospace Science and EngineeringCollege of Aerospace Science and EngineeringCollege of Aerospace Science and EngineeringIn 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.http://dx.doi.org/10.1155/2021/9718537 |
| spellingShingle | Pengnian Yang Zhixun Xia Likun Ma BinBin Chen Yunchao Feng Chaolong Li Libei Zhao Influence of the Multicavity Shape on the Solid Scramjet International Journal of Aerospace Engineering |
| title | 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_short | Influence of the Multicavity Shape on the Solid Scramjet |
| title_sort | influence of the multicavity shape on the solid scramjet |
| url | http://dx.doi.org/10.1155/2021/9718537 |
| 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 |