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THE EFFECTIVENESS ABSORPTION TEST OF LUBRICATING OIL WASTE AND HSD FUEL WITH NATURAL FIBERS (DURIAN SKIN) Abdul Rahman; Wawan Kusdiana; Ayip Rivai; Heru Hadi Suseno
JOURNAL ASRO Vol 10 No 3 (2019): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (186.744 KB) | DOI: 10.37875/asro.v10i3.144

Abstract

Pollution of sea water due to oil spills often occurs. Among them are tanker accidents, explosions of offshore oil platforms, ship operation errors and waste from the petroleum and coal industries. Oil spills in the sea often cause pollution which leads to damage to biological resources and damage to the underwater ecosystem. The purpose of this study was to determine the process and processing, and to determine the ability of durian skin to adsorb lubricating oil waste and HSD fuel. This research was conducted by processing the waste with variations of time 2, 5, and 10 minutes. And with variations in durian skin size of 0.25 mm², 1 mm², and 9 mm². With drying of durian skin between 1-15 days with 1-30 days. Then the results were analyzed to determine the efficiency of absorbing durian skin. The results of STTAL laboratory studies showed an increase in durian skin mass after undergoing a process of adsorption of lubricating oil waste and HSD fuel. Thus, the optimal durian skin time and size obtained on lubricating oil waste is 10 minutes with a surface area of 1 mm², mass of 4 grams in drying for 1-30 days. With efficiency of 82.54%. Whereas the HSD fuel is 10 minutes with a surface area of 0.25 mm², mass 4 grams on drying for 1-15 days. With an efficiency of 86.03%.Keywords: Durian skin, adsorption of lubricating oil waste, HSD
THE UTILIZATION OF FUEL DIESEL EMULSION AS A RESERVE SOURCE OF DIESEL FUEL FOR INDONESIAN WAR SHIPS Abdul Rahman; Dwi Kumara; Wawan Kusdiana; Anton Nugroho
JOURNAL ASRO Vol 11 No 04 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/asro.v11i04.357

Abstract

By the development of the time, diesel fuel is made from petroleum which is decreasing in number. Besides that, the emissions produced from burning diesel fuel can also cause air pollution. One of the methods used to minimize the use of diesel fuel and air pollution is by using emulsion fuel. therefore, a precautionary measure is required in preparing a reserve fuel source for Indonesian war ships. And one of the options is with emission diesel fuel. From the results of laboratory trials there was an increase in density, viscosity, flash point, cetane and TAN numbers and a decrease in residue, Lower Heating Value and calorific value. The performance test results show an increase in SFOC and thermal efficiency, but the power, torque and BMEP have decreased. So, it can be concluded that the emulsion HSD has decreased performance but can reduce emissions from the combustion process. So, it is hoped that emission diesel fuel can be used as an alternative as well as a solution to the limitations of diesel fuel in the future, so that it can support tni al operations in the future. Keywords : Diesel fuel , diesel fuel emulsion, reserve fuel, Indonesian Navy Operations
DESIGN OF MANIPULATOR ROBOT IN UNMANNED GRENADE TAMER (UGT) Ayip Rivai Prabowo; Endro Prasetijoadi; Dueng Deriva; Wawan Kusdiana
JOURNAL ASRO Vol 11 No 03 (2020): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37875/asro.v11i03.318

Abstract

Low safety factor in the Standard Operating Procedure (SOP) in handling grenades that fail to explode at the training location can be fatal for personnel and instructors. In a previous study, a stick manipulator was designed. However, this tool has disadvantages because the operator is too close to explosives. By considering the security of personnel, the authors make "Design Robot Manipulator Build on Unmanned Grenade Tamer (UGT)". This tool is used to assist trainers and instructors in the implementation of laying explosives as a procedure for handling grenades that do not explode properly in position. The mechanism of this tool is made to complement the base tank that is driven by a robot remote control system that moves using a servo motor as an actuator. The total length of the horizontal arm stretch is 780 mm and 795 mm for the vertical stretch. Arm foundation is designed capable of rotating as far as 120⁰. Link 1 moves 150 °, link 2 150 °, Link 3 1801, and wrist roll 90 °. The force acting on link 1 is 16.758N in the direction of the y-axis parallel force, torque is 5.5 Nm and with an angular acceleration of 142rad / s². On the link 2 force of 16.66N, the direction of the force is parallel to the y axis, torque of 9.4 Nm and angular acceleration of 496rad / s². And on the 3 link force of 14.7N of torque of 3.3 Nm and angular acceleration of 293rad / s². The gripper gripping force is 1,158 kgf which is driven by a servo motor with a minimum torque of 5.42 Nm. Keywords: Robot arm, Torque, Gripper
DESIGN FREE SURFACE TANK ON FAST MISSILE BOAT 60M Sutrisno Sutrisno; Andi Mawanto; Wawan Kusdiana; Cahya Kusuma
STTAL POSTGRADUATE - INTERNATIONAL CONFERENCE Vol 4 No 1 (2020): Indonesia Naval Technology College STTAL Postgraduate International Conference -
Publisher : Indonesian Naval Technology College STTAL

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Abstract

Rolling motion is important role in the stability of the ship. Predicting the motion of a ship design must be done to see the design performance. The magnitude of the resulting motion response will affect the comfort and safety of personnel and materials in the ship. For this reason, simulation and analysis rolling and pitching prediction are carried out when the ship is operating, with and without the addition of a free surface tank (FST) as a stabilizer system with variations in the FST base height, water volume, boat velocity, heading direction and the waves. The prediction of ship motion in this research is ushing shipmo software and to assess operational feasibility, the general criteria standard issued by NATO STAGNAG 4154 (US. Navy) and US Coast Guard. From the simulation results it was found that increasing the height of the FST base from the base line decreases rolling motion. At a height of 4 m the maximum response magnitude below the allowable standard is 3,365 deg, while at a height of 3 m above the allowable standard that is 4,734 deg. The addition of FST and variations in placement of the FST base height from the base line did not significantly affect the pitching motion of the ship. Heading direction, waves and operational speed of the ship need to be considered to get the minimum rolling motion response when the ship is operating. Keywords: Fast Missile Boat 60M, Free Surface Tank, Pitching, Rolling, Shipmo.
POLICY STRATEGY FOR EMPOWERMENT OF BORDER AREA IN IMPROVING MARITIME SECURITY Richard Martin; Kornia Adhi Nugraha; Wawan Kusdiana; Eko Krisdiono
JOURNAL ASRO Vol 13 No 2 (2022): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

The border area of ​​a country is the main capital of a country's sovereignty. One of the islands whose position is at the forefront and at the same time the outermost border of Indonesia and other countries is Alfa Island. The research method used in this research is to use the integration of strength, weakness, opportunity, and threat (SWOT) analysis methods and the Borda method in formulating a strategy for developing the empowerment of the Miangas Island marine defence area. SWOT analysis is used to formulate and provide alternatives in the development strategy of developing a strategy for the empowerment of the Alfa Island marine defence area. And the Borda method is used to determine priorities for the selected strategy. With this research, it is hoped that it can encourage and become government input in managing the policies of the outermost islands by giving special attention to minimizing vulnerabilities and potential threats and increasing the positive potential that already exists on Alfa Island. Based on the research results, obtained 6 strategies. The weight calculation results show that the WO 1 strategy has the highest weight and is a priority strategy, which is to take advantage of the Indonesian Navy's MEF policy opportunities by increasing the Posal Alfa Capability that supports active patrols and sea operations of Posal Alfa. Keywords: SWOT Analysis, Alfa, Borda. Method
Co-Authors Abdul Rahman Agung Tresnadi Amri Rahmatullah Andi Mawanto Anton Nugroho Arda Arda Widyaksa As'ad Aris Mustofa Ayip Rivai Prabowo Bagiyo Herwono Cahya Kusuma Dueng Deriva Dwi Kumara Dwi Putra Maulana Eko Krisdiono Endro Prasetijoadi Heru Hadi Suseno Irfan Syarif Arief Kornia Adhi Nugraha M. Yunus Abdullah Mey Edy Prayitno Mohammad Syaifi Muhammad Askhuri Okol Sri Suharyo Pompy Pratisna Richard Martin Suparno, Suparno Sutrisno Sutrisno