Performance Evaluation of Fixed Pitch Propellers: Flow Visualization of Cavitation in Unmanned Surface Vehicles

  • Asral Asral Department of Mechanical Engineering, Engineering Faculty, Universitas Riau, Pekanbaru, Riau, Indonesia
  • Muhammad Nurhidayat Department of Mechanical Engineering, Engineering Faculty, Universitas Riau, Pekanbaru, Riau, Indonesia
  • Herisiswanto Herisiswanto Mechanical Engineering, Universitas Riau, Indonesia
  • Efi Afrizal Mechanical Engineering, Universitas Riau, Indonesia
  • Muhammad Hazel Hafis Department of Mechanical Engineering, Engineering Faculty, Universitas Riau, Pekanbaru, Riau, Indonesia
  • Rahimuddin Samad Department of Marine Systems Engineering, Faculty of Engineering, Universitas Hasanuddin, Makassar, South Sulawesi, Indonesia
  • Muhammadu Masin Muhammadu Department of Mechanical Engineering, Federal University of Technology, Minna, Nigeria
DOI: http://dx.doi.org/10.36842/jomase.v69i2.538

Abstract

This study was conducted to determine a suitable and appropriate propeller for use on unmanned surface vehicles. The tests involved varying the number of blades-2, 3, and 4 of fixed pitch propellers type to assess thrust, propeller performance during straight-line motion and maneuvering, as well as the flow patterns around the propeller that have the potential to cause cavitation. The experiments were carried out in both a reservoir and a test tank. The results showed that the average thrust produced by the 2-blade, 3-blade, and 4-blade propellers was 13.32 N, 17.13 N, and 12.78 N, respectively. In the straight-line test over a 20-meter distance, the average speeds achieved were 1.49 m/s (2 blades), 1.40 m/s (3 blades), and 1.21 m/s (4 blades). For maneuvering, the average speeds recorded were 0.80 m/s, 0.61 m/s, and 0.49 m/s, respectively. Flow pattern analysis around the propellers revealed that cavitation occurred in almost all conditions and blade number variations. The fewer the blades, the more clearly cavitation bubble formation was observed. Similarly, increasing the propeller rotational speed can lead to a higher rate of bubble formation. Overall, the 3-blade propeller yielded the best performance for unmanned surface vehicle, offering an optimal balance of thrust, speed, maneuverability, and more controlled cavitation potential.

##Keywords:## Cavitation, Flow Pattern, Propeller, Fluid Dynamic, Surface vehicle.
Published
Jul 29, 2025
How to Cite
ASRAL, Asral et al. Performance Evaluation of Fixed Pitch Propellers: Flow Visualization of Cavitation in Unmanned Surface Vehicles. Journal of Ocean, Mechanical and Aerospace -science and engineering-, [S.l.], v. 69, n. 2, p. 91-98, july 2025. ISSN 2527-6085. Available at: <https://isomase.org/Journals/index.php/jomase/article/view/538>. Date accessed: 12 may 2026. doi: http://dx.doi.org/10.36842/jomase.v69i2.538.
Citation Formats
Issue
Vol 69 No 2 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Section
Articles

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