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Efficiency, thrust, and fuel consumption optimization of a subsonic/sonic turbojet engine

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  • Patel, Vivek
  • Savsani, Vimal
  • Mudgal, Anurag

Abstract

This paper presents a rigorous investigation for efficiency, thrust, and fuel consumption optimization of a subsonic/sonic turbojet engine. A thermal model of the turbojet engine is developed for optimization investigation. A many-objective optimization problem is formed by considering maximization of thermal efficiency, propulsive efficiency, specific thrust and minimization of thrust-specific fuel consumption of turbojet engine and solved using multi-objective heat transfer search (MOHTS) algorithm. Results are obtained as a set of Pareto-optimal points for the many-objective problem. Comparative results of many-objective and multi-objective optimization are presented on the two-dimension objective space. Design points having 70.95% thermal efficiency, 60.23% propulsive efficiency, 0.0162 kg/s/kN specific fuel consumption, and 1.1666 kN/kg/s specific thrust are obtained during the optimization. Decision-making approaches like LINMAP, TOPSIS, and fuzzy are used to select the final optimal solution from the Pareto optimal set of the many-objective optimization. Finally, to reveal the level of conflict between these objectives, the distribution of each operating variables in their allowable range is also shown in two-dimension objective spaces.

Suggested Citation

  • Patel, Vivek & Savsani, Vimal & Mudgal, Anurag, 2018. "Efficiency, thrust, and fuel consumption optimization of a subsonic/sonic turbojet engine," Energy, Elsevier, vol. 144(C), pages 992-1002.
    • Handle: RePEc:eee:energy:v:144:y:2018:i:c:p:992-1002
    DOI: 10.1016/j.energy.2017.12.080
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    References listed on IDEAS

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    Cited by:

    1. Zhao, Hang & Liao, Zengbu & Liu, Jinxin & Li, Ming & Liu, Wei & Wang, Lei & Song, Zhiping, 2022. "A highly robust thrust estimation method with dissimilar redundancy framework for gas turbine engine," Energy, Elsevier, vol. 245(C).
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    4. Aygun, Hakan & Kirmizi, Mehmet & Kilic, Ulas & Turan, Onder, 2023. "Multi-objective optimization of a small turbojet engine energetic performance," Energy, Elsevier, vol. 271(C).

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