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All Journal Cylinder : Jurnal Ilmiah Teknik Mesin
Wenehenubun, Frederikus
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Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Streamline Monohull Ship Form For Sea-High Speed Crafts Wenehenubun, Frederikus
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 5 No 1 (2019): APRIL 2019
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

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Abstract

Sea transportation for many inhibited small islands with no transportation link to market and education center is one of the most concern for economic growth. A good reliable hull form for fast marine vehicles carrying passengers, car, and goods has been defined. The design process was to apply the concept of monohull and frigate form for good seakeeping and structural strength considering wavy Indonesian water. Smiplaning hull form was introduced to meet the criteria of fast marine vehicles and take into account streamline hull surface, fluid flow, total resistance in calm water were studied by towing tank model tests. Variation of waterline entrance angles as the main variable result good performance of 9.50 angle hull form more than the two others 6.50 angle and 110 angle. Sectional area dan breadth ratios to their maximum values were prepared. This as means for preliminary design and further study of the hull form.
Path-Planning Module for Tricycle Mobile Robot Tommy, Tommy; Christiand, Christiand; Wenehenubun, Frederikus
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 12 No 1 (2026): April 2026
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v12i1.7901

Abstract

The path planning module is essential for the navigation of autonomous systems. This research aims to develop a path-planning module in Python programming language using the A* algorithm in conjunction with V-REP software which is used to simulate the path-planning outcome. The A* algorithm is used in this research to implement path-planning for a tricycle mobile robot. Both simulated and physical studies were performed to evaluate the module's performance. In the experiments, inputs of velocity and steering angle are given to the mobile robot at every period as obtained from the simulation regression. The discrepancy between the simulated and physical experimental results was attributed to the inertia force acting on the robot and other factors. The steering angle dominance on a mobile robot also affects the final position of the robot.
Co-Authors Christiand, Christiand Tommy, Tommy