Title: Investigating the sectional thrust and exergy efficiency of a turbojet engine

Authors: Mustafa Akbas; Onder Altuntas; Arif Hepbasli

Addresses: Ministry of National Defence, 5th Main Maintenance Factory Directorate, Etimesgut, Ankara, Turkey ' Faculty of Aeronautics and Astronautics, Eskisehir Technical University, 26555, Eskisehir, Turkey ' Department of Energy Systems Engineering, Faculty of Engineering, Yasar University, 35100 Bornova, Izmir, Turkey

Abstract: This study delves into the performance characteristics of a turbojet engine, focusing on the impact of varying compressor pressure ratios and component geometries on thrust and exergy efficiency. The effects of Mach number and compressor pressure ratio on exergy utilisation efficiency at varying altitude values are also examined. Utilising the MATLAB, the analysis was conducted within a range of sea level to 12,000 m altitude. The results obtained provide valuable insights into the potential for optimising turbojet engine performance through strategic adjustments to pressure ratios and component geometries.

Keywords: exergy analysis; energy analysis; exergy utilisation efficiency; EUE; aeroengine performance; turbojet engine.

DOI: 10.1504/IJEX.2026.151867

International Journal of Exergy, 2026 Vol.49 No.2, pp.143 - 162

Received: 19 May 2025
Accepted: 18 Jul 2025
Published online: 24 Feb 2026 *

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