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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Herisiswanto, Herisiswanto
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Aerospace Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Performance Evaluation of Fixed Pitch Propellers: Flow Visualization of Cavitation in Unmanned Surface Vehicles Asral, Asral; Nurhidayat, Muhammad; Herisiswanto, Herisiswanto; Afrizal, Efi; Hafis, Muhammad Hazel; Samad, Rahimuddin; Muhammadu, Muhammadu Masin
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 69 No 2 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 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.
Perancangan Dan Pembuatan Sistem Kontrol Penggerak Torch Potong Las Oxy-Acetylene Berulir Berbasis Mikrokontroler Arduino Uno Handoko, Yulli; Herisiswanto, Herisiswanto; Syafri, Syafri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Currently, the most common method of cutting steel is cutting with oxygen gas. Because the cutting method with manual cutting produces poor results and complicated processes. This plate cutting tool is made to facilitate the work especially in the field of construction. The used research method is based on the workprinciple of CNC 2 axis machine, because it is able to move in the direction of X and Y axis on the work plane, also has a hight accurancy and precision. This plate cutting tool use 3 Softwares, i.e Universal G-Code Sender as a controller, QCAD as a workpiece design and DXF2G-CODE as a code exporter. The manufacture ofmicrocontroller-based plate cutting tool results an easier plate cutting process, because the operator have to input the data according to the necessary only. From the X and Y axis movement and plate cutting velocity testing, the result data has equal magnitude between the program, simulation and actual condition.Key Words : Oxy-Cutting, Microcontroller, Arduino UNO.
Co-Authors Afrizal, Efi Asral, Asral Hafis, Muhammad Hazel Handoko, Yulli Muhammadu, Muhammadu Masin Nurhidayat, Muhammad Samad, Rahimuddin Syafri, Syafri