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Optimisation design of turbofan engine using infrared stealth technology

Published online by Cambridge University Press:  28 November 2022

M. Chen*
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China
H. Chen
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China
H. Zhang
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China
J. Luo
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China
*
*Corresponding author. Email: 1358025658@qq.com

Abstract

To obtain the optimal solution for the performance of the turbofan engine using infrared stealth technology, an engine mathematical model with a backward infrared radiation intensity calculation module was established. The effects of infrared suppression measures on the performance of turbofan engines were analysed. Based on the multi-objective particle swarm optimisation (MOPSO) algorithm, the optimal solution for the performance in the cruise state of the reference engine refitted with the infrared radiation suppression module was obtained; Further, through the multiple design points (MDPs) concept, the thermal cycle optimisation design of the turbofan engine was carried out. The results show that the integrated fully shielded guiding strut (IFSGS) with air film cooling had the ideal infrared suppression effect. Compared with the reference engine refitted with infrared radiation suppression module, the engine after cycle optimisation design could obtain better infrared stealth performance.

Type
Research Article
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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