Optimizing combustion performance in a solid rocket scramjet engine

被引：28
作者：
Liu, Jie [1 ,2 ,3 ]
Wang, Ning-fei [1 ]
Wang, Jian [2 ,4 ]
Li, Zi-yan [1 ]
机构：
[1] Beijing Inst Technol, Sch Aerospace Engn, Beijing 100081, Peoples R China
[2] Beijing Power & Machinery Inst, Beijing 100074, Peoples R China
[3] State Key Lab Laser Prop & Applicat, Beijing 100081, Peoples R China
[4] Sci & Technol Scramjet Lab, Beijing 100081, Peoples R China
来源：
AEROSPACE SCIENCE AND TECHNOLOGY | 2020年 / 99卷
关键词：
Solid propellant; Solid rocket scramjet; Two-phase flow; Combustion efficiency; Orthogonal design; IGNITION; HYDROGEN; INJECTION; BORON;
D O I：
10.1016/j.ast.2019.105560
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
To enhance combustion efficiency of a boron-based propellant solid rocket scramjet (SRS) engine, this study attempted a new organization scheme combining cavity and pneumatic slope. To optimize the proposed system, a series of numerical simulations were performed, and through orthogonal design and single factor analysis, the key factors were determined. The developed two-phase flow simulation has been verified by the full-scale ground test, given an error within 10%. The results show that for both combustion efficiency and total pressure recovery, the influence of gas injection mode is much greater than the ratio of the length to depth of the concave cavity as well as the cavity depth. And the combustion performance has proved to be optimized via the enlarged low speed area near the cavity and the strengthened particles reflux. (C) 2019 Elsevier Masson SAS. All rights reserved.
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页数：8
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