A review on the structures and characteristics of micro-turbojet engines

Authors

1 Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran

2 Department of Aerospace Engineering, Sharif University of Technology, Tehran, Iran

3 Department of Mechanical Engineering, Faculty of Engineering, Bu-Ali Sina University, Hamedan, Iran

10.22044/jsfm.2023.13523.3780

Abstract

Nowadays, micro-turbojet engines are widely used in various fields, from recreational devices to drones and missiles in the military industry. Given their remarkable performance, numerous companies have entered this area and produced a variety of products. This widespread use and diverse range of products have led to an increased importance of review studies in this subject. In this research, an extensive study has been conducted on micro-turbojet engines with a thrust force below 1000 Newtons. These engines have a diameter less than 300 mm, compressor pressure ratio less than 5 and fuel consumption lower than 2500 gr/min. Statistical analysis of the engines within this thrust range has yielded valuable information regarding the structural and performance specifications of this category of engines, which is presented in the form of tables and graphs. In this study, the main components of these engines, including the compressor, combustion chamber, turbine, and auxiliary systems, as well as their interconnections, are described. Although the overall structure of these engines is similar to large-scale aircraft engines, there are significant differences in design philosophy, types of main components, and details. At the end of the paper, specifications of over one hundred micro-turbojet engines available worldwide including thrust range, dimensions, engine rotor speed, air flow rate, fuel consumption, and turbine temperature are presented.

Keywords

Main Subjects

References

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Journal of Solid and Fluid Mechanics
Volume 13, Issue 5
November and December 2023
Pages 59-76

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