Theoretical Prediction on the Nozzle Thrust of Scramjets

HAN Xin; ZHANG Zi-jian; MA Kai-fu; LIU Yun-feng

doi:10.19527/j.cnki.2096-1642.0888

Volume 7 Issue 1

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HAN Xin, ZHANG Zi-jian, MA Kai-fu, LIU Yun-feng. Theoretical Prediction on the Nozzle Thrust of Scramjets[J]. PHYSICS OF GASES, 2022, 7(1): 1-8. doi: 10.19527/j.cnki.2096-1642.0888

Citation:

HAN Xin, ZHANG Zi-jian, MA Kai-fu, LIU Yun-feng. Theoretical Prediction on the Nozzle Thrust of Scramjets[J]. PHYSICS OF GASES, 2022, 7(1): 1-8. doi: 10.19527/j.cnki.2096-1642.0888

HAN Xin, ZHANG Zi-jian, MA Kai-fu, LIU Yun-feng. Theoretical Prediction on the Nozzle Thrust of Scramjets[J]. PHYSICS OF GASES, 2022, 7(1): 1-8. doi: 10.19527/j.cnki.2096-1642.0888

Citation:

HAN Xin, ZHANG Zi-jian, MA Kai-fu, LIU Yun-feng. Theoretical Prediction on the Nozzle Thrust of Scramjets[J]. PHYSICS OF GASES, 2022, 7(1): 1-8. doi: 10.19527/j.cnki.2096-1642.0888

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Theoretical Prediction on the Nozzle Thrust of Scramjets

doi: 10.19527/j.cnki.2096-1642.0888

HAN Xin^{1, 2
,},
ZHANG Zi-jian^{1, 3},
MA Kai-fu^{1, 2},
LIU Yun-feng^{1, 2
,
,}

1.
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
2.
School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China
3.
Interdisciplinary Division of Aeronautical and Aviation Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China

Received Date: 30 Nov 2020
Revised Date: 14 Dec 2020

Abstract

Abstract

A big progress has been made for scramjets in the past 60 years. However, whether it has enough thrust or not is not clear to date. In this paper, the thrust performance of the nozzle was analysed by using the isentropic expansion theory, because the thrust is mostly produced by the nozzle in scramjets. The parameters in the combustor were used as the boundary conditions. A dimensionless thrust equation was obtained by integrating the pressure along the nozzle wall. The key parameters and physical laws governing the thrust performance were discussed. The analysis results show that the supersonic combustion is good for producing higher thrust. The main way to get heavy thrust is to increase the combustion static pressure in the combustor. The analysis results are in good agreement with CFD results, which demonstrates its correctness.
- scramjets,
- thrust,
- nozzle,
- isentropic expansion theory,
- theoretical analysis

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References(29)

References

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Theoretical Prediction on the Nozzle Thrust of Scramjets

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