Research on the operating boundary of the dual mode scramjet with a constant area combustor through thermodynamic cycle analysis
Research on the operating boundary of the dual mode scramjet with a constant area combustor through thermodynamic cycle analysis
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基于热力循环分析的定面积燃烧室双模式超燃冲压发动机运行边界研究
DOI:
10.1016/j.energy.2020.119271
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发表时间:
2020-11
期刊:
影响因子:
9
通讯作者:
Wen Bao
中科院分区:
文献类型:
--
作者:
Youyin Wang;Wenxin Hou;Junlong Zhang;Jingfeng Tang;Juntao Chang;Wen Bao
The maximum pressure ratio of the isolator is important for studying the operating boundary of the dual mode scramjet. In this paper, the pressure rise mechanism of the dual mode scramjet engine and the characteristic of the isolator maximum pressure rise are analyzed. The operating range and performance of scramjet under the pressure rise limit are investigated using the constant cross-sectional area combustor. The maximum pressure ratio of the isolator confines the back pressure from the combustor so that the scramjet engine has a minimum freestream Mach number of each equivalence ratio. When the freestream Mach number is smaller than the minimum freestream Mach number, an expansion section may be arranged between the combustor and the isolator to balance the pressure of the combustor and that of the isolator. The expression of the minimum freestream Mach number is derived and it is found that the minimum freestream Mach number of the dual mode scramjet in both modes increases with the increase of equivalence ratio and compression ratio of the inlet. A variable divergent section is suggested to balance the pressure under different freestream Mach numbers and equivalence ratios.
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DOI:
10.2514/6.2013-120
发表时间:
2013-01
期刊:
--
影响因子:
--
作者:
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通讯作者:
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