The critical speed of the transmission shaft and effect of vibrations of power transmission mechanism to aircraft refueling pump

Authors

  • Souliman Hatem Souliman Graduate Student (PhD) in Machinery Design and Building Engineering in the Mechanical Design Engineering Department, Faculty of Mechanical and Electrical Engineering, Damascus University.
  • Essam Karkot Assistant Professor, Dr in the Mechanical Design Engineering Department, Faculty of Mechanical and Electrical Engineering, Damascus University.
  • Rakan Alhaj Abd Lecturer in the Department of Mechanical Design Engineering, Faculty of Mechanical and Electrical Engineering, Damascus University

Keywords:

Critical speed, Power transmission mechanism, Aircraft fuel pump, Transmission shaft, Vibration parameters

Abstract

This research deals the study of the critical speed of the transmission shaft of power transmission mechanism to aircraft fuel pump and the impact of

vibrations on it. The vibration parameters were measured in the basic model of this mechanism, and the critical speed values ​​of the transmission shaft to the pump were calculated at the same number of working cycles. A design modification was also made to the power transmission mechanism to the pump, which reduced the length of the transmission shaft by (33%) and increased its diameter by (2mm) compared to the original model. The results of the study showed that the values ​​of the critical speed of the transmission shaft in the modified model increased, and that the speed and acceleration of vibration decreased at the same number of cycles compared to the basic model of this mechanism, and as a result we obtained greater safety factors and more stability in performance during investment, in addition to extending the service life Aircraft refueling system in aviation.

 

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Author Biographies

  • Souliman Hatem Souliman, Graduate Student (PhD) in Machinery Design and Building Engineering in the Mechanical Design Engineering Department, Faculty of Mechanical and Electrical Engineering, Damascus University.

    Graduate Student (PhD) in Machinery Design and Building Engineering in the Mechanical Design Engineering Department, Faculty of Mechanical and Electrical Engineering, Damascus University.

  • Essam Karkot, Assistant Professor, Dr in the Mechanical Design Engineering Department, Faculty of Mechanical and Electrical Engineering, Damascus University.

    Assistant Professor, Dr in the Mechanical Design Engineering Department, Faculty of Mechanical and Electrical Engineering, Damascus University.

  • Rakan Alhaj Abd, Lecturer in the Department of Mechanical Design Engineering, Faculty of Mechanical and Electrical Engineering, Damascus University

    Lecturer in the Department of Mechanical Design Engineering, Faculty of Mechanical and Electrical Engineering, Damascus University

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Published

2025-05-21

Issue

Vol. 41 No. 2 (2025): Damascus University Journal for engineering sciences

Section

المقالات

How to Cite

The critical speed of the transmission shaft and effect of vibrations of power transmission mechanism to aircraft refueling pump. (2025). Damascus University Journal for Engineering Sciences, 41(2). https://journal.damascusuniversity.edu.sy/index.php/engj/article/view/7928