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THE OPERATIONAL READINESS FOR ANTI SUBMARINE INDONESIAN NAVAL BY USING ANTI SUBMARINE HELICOPTER Muksin Muksin; Udisubakti Ciptomulyono; Sutrisno Sutrisno; Sunarta Sunarta
JOURNAL ASRO Vol 12 No 01 (2021): 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.v12i01.394

Abstract

Some of the Indonesian naval effort to see and protect the Indonesian territory is by using Helicopter sea patrol. In the other side, submarines are the most strategic weapons in the world that can provide a deterrence effect which has a very significant impact on the maritime powers of the countries operating them in the era of generation 4.0 war. Operational readiness is very important, there are readiness in building operational readiness for naval defense through budget fulfillment, utilization of existing resources, procurement and naval modernization by paying attention to Life Cycle Cost, and interoperability while still paying attention to paradigm shifts in naval capability. So, the combat readiness is the condition of the Indonesian Navy's defense equipment and its constituent units, resources and personnel, weapon systems and other military technology equipment in a condition that is ready to carry out military operations in an unspecified time, or function consistent with the purpose for which the defense equipment is organized or designed, the management of resources and training personnel in preparation for combat in the face of the threat of modern warfare in a state of constant combat readiness. At this time, training in Anti-Submarine Warfare conducted by Indonesian Navy’s Helicopter is still limited to carrying out flight procedures, communication procedures with the KRI and the command line, because Helicopters have sensors, weapons and command that need to be upgraded and The personnel also have underwater warfare capabilities that need to be upgraded, so there needs to be an increase in the capability of the helicopter and human resources. Technometry will be used to calculate the Heli's current readiness level. Keywords: Submarine, Anti Submarine Helicopter and operational readiness
DESIGN AND DEVELOP AUTOMATION SYSTEM FOR SAVING ELECTRICAL ENERGY IN THE STTAL OFFICE ROOM Sutrisno Sutrisno; wawan kusdiana; Amri Rahmatullah; Bagiyo Herwono
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 (649.907 KB) | DOI: 10.37875/asro.v10i3.174

Abstract

The use of electricity in offices has been considered too wasteful. This is caused by human negligence in controlling their use. For this reason, this research was carried out as an effort to find the right method to reduce the high electricity consumption in offices. This research was conducted in the STTAL classroom, Bumimoro, Surabaya. From the results of the calculation, the total heat load in the classroom is 32,048.3 BTU or ± 4 PK. Total installed AC capacity is only 2 PK. This automation tool is a system that works automatically to regulate the use of electrical equipment based on parameters that have been determined in a program such as the presence or absence of humans, the level of light intensity and room temperature. Data collection is carried out for 6 days in the classroom, 3 days without tools and 3 days using the automation tool. Furthermore, the data is compared to the graph and the savings are calculated. The result, on day 1 is 56.11%, days 2 and 3 are 10.26% and the average savings for the 6-day trial is 33.43%. All data is recorded automatically on a micro sdcard and information about the amount of electricity consumption and the ON / OFF feature of electrical equipment can also be accessed via a smartphone with a wifi network so that users will find it easier to monitor the use of electrical equipment in the classroom.Keywords: electricity waste, heat load, automation system, electricity monitoring, electricity savings.
STUDI AWAL PERANCANGAN KAPAL 60 METER DENGAN FUNGSI UTAMA SEBAGAI KAPAL SAR (SEARCH AND RESCUE) Sutrisno Sutrisno; Ary Kurniawan; Agoes Santoso
JOURNAL ASRO Vol 6 (2016): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

jenis kapal-kapal patroli cepat. Rata-rata usia kapal sudah lebih dari 20 tahun, sehingga tingkat keandalannya sudah mulai menurun. Kapal-kapal patroli yang ada sekarang rata-rata fungsi sasasinya hanya sebagai kapal cepat dan dirancang untuk menghadapi kondisi cuaca pada SS 3 sekala keadaan laut, fasilitas kapal untuk pertolongan korban juga banyak yang rusak karena faktor usia. Dalam penulisan tugas akhir ini, penulis membuat suatu konsep perancangan Kapal SAR, lines plan dan general arrangement kapal. Konsep perancangan menggunakan perhitungan dan pemodelan dengan program komputer, sehingga didapatkan hasil yang lebih baik. Perancangan awal kapal 60-meter dengan fungsi utama sebagai kapal SAR ini memiliki kemampuan bergerak maksimal 25 knot dan stabilitas yang tinggi sehingga dapat bergerak dalam cuaca cukup ekstrim yaitu pada SS5 skala keadaan laut. Adapun dimensi pokok/ukuran utama MPB hasil perancangan adalah: Displacement, full load: 1026 full load; Dimension, meter : 62,52 x 9,05 x 3,6; Main machinery: 2 MTU 12V 1163 TB93 diesels, 11,908 hp, 2 shafts; Speed, knot: 25,5 knots; Range, n miles : 7700 at 19 kt, 4650 at 21 kt; Complement : 46 plus 8 spare berths; Search and Rescue Facilities : 1 rescue craft, 2 RIB launched by 5 tons crane, 2 rubber boat 40 hp, helicopter deck if weights up to 4900 kg, survivor rescue area, medical facility, camber facility, side scan sonar, NBC pollution control, firefighting capability. Diharapkan hasil dari perencanaan ini dapat sebagai bahan pertimbangan kebijakan pimpinan TNI Angkatan Laut untuk menentukan salah satu jenis kendaraan perairan untuk jajaran kapal patrol. Kata kunci: SAR (Search and Rescue), dan kapal 60-meter.
ANALYSIS OF OCCUPATIONAL SAFETY AND HEALTH RISK MANAGEMENT ON THE AMPHIBIOUS OPERATIONS EXERCISE USING HIRARC METHOD Yudha Sukma Perdana; Sutrisno Sutrisno; Udisubakti Cipto Mulyono
JOURNAL ASRO Vol 12 No 4 (2021): International Journal of ASRO
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

To Keep Indonesian defense, the TNI has one of the main tasks, namely carrying out War Military Operations (OMP). One form of this operation is the amphibious operation, which is a military operation launched from the sea by the Indonesian Navy's marine units and landing troops loaded on ships and involving air power. In its implementation, amphibious operations exercises contain potential risks that can endanger the safety of personnel and defense equipment materials. Several accidents in amphibious operations have been experienced by the Indonesian Navy. The purpose of this study is to determine the risks that exist in amphibious operation activities and then measure the risk value in amphibious operation activities so that risk control proposals can be made. The method used in this study is HIRARC. The HIRARC method is widely used in the world and is very suitable to be applied in conducting a risk analysis because it is considered complete enough to include the process of risk identification, risk assessment and risk control. Based on the risk analysis using HIRARC, it is known that amphibious operation training activities have 84 potential risks with 19 risks at the extreme level, 27 risks at the high level, 29 risks at the moderate level and 9 risks at the low level. While the highest risk value is in the attack stage with a risk value of 297. With the research results that have been obtained, several proposals for risk control and appropriate risk mitigation can be proposed in order to realize the Navy towards zero accident. Keywords: Amphibious Operation, Risk Management, HIRARC
THE MODEL DESIGN MODIFICATION OF SUNLIGHT DETECTION SYSTEM ON SOLAR CELL Sutrisno Sutrisno; As'ad Aris Mustofa; Wawan Kusdiana; Okol Sri Suharyo
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.v11i04.354

Abstract

Indonesia is a country traversed by the equator therefore get a high intensity of sunlight from morning to afternoon, it can be utilized by utilizing solar power to be converted into electrical energy, that is using solar panels. The performance of solar panels is strongly influenced by the intensity of sunlight. Therefore it is Necessary to design a tool in the form of solar tracker that can move the solar panels to the position of the solar panels can always follow the direction of the coming sun. Currently there is already doing research with solar tracker but limited to move only east and west course, this will be more optimal if solar tracker can follow sunshine from all direction. In this research we managed to modify the models of a solar tracker that can move in direction east, west, north and south following the sun.The conclusion of this research is Obtained with the use of solar tracking system 2 degrees of freedom can reach a power increase of 11% Compared to the solar tracking system 1 degree of freedom. Keywords: Solar tracker 2 degrees of freedom, Solar cell.
THE DEVELOPMENT STRATEGY OF FASHARKAN LANTAMAL IX XYZ FROM CLASS C FASHARKAN TYPE TO FASHARKAN CLASS A KOARMADA III WITH DELPHI, TOWS AND ISM APPROACH R Fajar Antariksa; Udisubakti Cipto Mulyono; Sutrisno Sutrisno; Anton Nugroho
JOURNAL ASRO Vol 12 No 01 (2021): 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.v12i01.376

Abstract

The formation of Koarmada III resulted in a shift and an increase in the number of KRIs in its working area, so that it had to be balanced with the ability of maintenance and repair facilities (fasharkan). Fasharkan XYZ is a fasharkan with class C status so it needs to be upgraded to class A to support KRI improvements. The purpose of this study is to determine an alternative strategy for the development of Fasharkan XYZ with the Delphi approach, TOWS analysis and Interpretative Structural Modeling (ISM). Delphi technique to determine criteria from key factors, TOWS analysis to formulate alternative strategies developed, namely the SO strategy which consists of 7 (seven) strategic steps, the ST strategy consists of 5 (five) strategic steps, the WO strategy consists of 9 (nine) steps strategy and strategy WT consists of 4 (four) strategy steps. From the weighting of the EFE and EFI matrices, the WO strategy is selected. With ISM obtained 5 (five) levels of hierarchical structure from the classification of elements in the WO strategy, namely strategy (WO) 6 at level V. Then sub strategy (WO) 4 is at level IV. At level III it consists of 4 (four) sub strategies, namely (WO) 2; (WO) 3; (WO) 7; (WO) 9. At level II, there are sub strategies (WO) 1 and (WO) 8. At level I sub strategy (WO) 5. Keywords: Fasharkan XYZ, development strategy, Delphi, TOWS, ISM
TIME ACCELERATION ANALYSIS AND OPTIMAL COST OF HOSPITAL HOSPITAL DEVELOPMENT PROJECT ON SHIP BUILDING USING CRITICAL PATH METHOD (CASE STUDY: PT. PAL INDONESIA (PERSERO)) Agung Tresnadi; Suparno Suparno; Sutrisno Sutrisno; Wawan Kusdiana
JOURNAL ASRO Vol 12 No 01 (2021): 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.v12i01.390

Abstract

Hospital Auxiliary Ship is an Indonesian Navy ship produced by PT. PAL Indonesia (Persero). The construction of this BRS ship was very time consuming and one of the main parts of the ship building project was the construction of the hull structure. In relation to time and production costs, the shipyard must be as efficient as possible in the use of time in each activity or activity, so that costs can be minimized from the original plan. Acceleration of the total duration in a project is done by accelerating critical activities in the project. To find out which are the critical activities of a project, the Critical Path Method (CPM) technique is used; namely by drawing a Network Diagram of the project. By using the CPM method in scheduling a ship hull construction project, it can be seen which activities should take precedence so as not to experience delays and waste. After that, the crashing method is carried out by increasing work hours (overtime) which aims to speed up the time of the project. The results of research for activities that are in the initial critical path with the CPM method can be seen as activities A, C, H, M, R, W, AB, AC, AD, AI, AP, AT, BA, BJ, BN. After accelerating, the critical path activities include activities A, C, H, M, R, W, X, AC, AD, AI, AP, AT, BA, BH, BO. Calculation of the project during initial conditions with Early working days without using overtime hours PT PAL Indonesia (Persero) costs Rp. 5,299,631,000, - while the Crashing Method is through the addition of 1 hour / day overtime so that the project implementation can be accelerated from the initial implementation of 450 days to 412 days and PT. PAL Indonesia (Persero) issued a project cost of Rp. 5,323,752,480, -. Keywords: Hospital Support Ship, Scheduling, CPM, Crashing.
ADDITION OF HYDROFOIL TO SHIP RESISTANCE ANALYSIS ON HALASAN CLASS BASED ON VALIDATION TEST RESULT Sutrisno Sutrisno; Wawan Kusdiana; Ayip Rivai Prabowo; Muhammad Askhuri
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 (666.672 KB) | DOI: 10.37875/asro.v10i3.166

Abstract

KRI Halasan - 630 is one of the Fast Missile warships with a length of 60 Meters which apart of fast patrol boat class which belongs to TNI-AL. Accordance with the main function not only as a fast missile boat but also as a patrol ship killer, this ship was made to have a high ability in “hit and run”. Since the beginning of the manufacture and after being inaugurated as KRI in 2014 this ship is able to reach speed until 27 knot in full load. As time goes on the same conditions the speed that this ship can achieve is 25 knot at maximum speed. This can be caused by increase in value from the resistance of the ship. One way to reduce the value of the resistance of the ship is to minimize the Wet Surface Area(WSA) from the ship. By adding hydrofoil technology will produce lift force which could lift apart of the hull ship from the water so that Wet Surface Area from the ship will reduce. From the calculation, to lift on the hull of KRI Halasan Class 20 cm in full load condition at 25 knot knows that dimension for fore foil with tapered straight type are wingspan 4,6 m, wingroot 1,33 m, wingtip 0,5 m, and swept angle 11°. And dimension for aft foil with rectangular straight type are wingspan 5,3 m, wingroot and wingtip 1,365 m, and swept angle 0°. The ship resistance with hydrofoil is 265,5 KN, while in the same condition and speed from the ship without hydrofoil the value of ship resistance is 267 KN. By adding hydrofoil technology could reduce the ship resistance 1,5 KN. This values could make 19,29 KW or 25,86 Hp in power saving.Keywords : Hydrofoil technology, Ship Resistance, Halasan Class
ANALYSIS OF FUEL QUALITY EFFECT ON THE LIFE TIME FROM HIGH-PRESSURE PUMP OF ENGINE MTU 12 V 4000 M 71 Sutrisno Sutrisno; Wawan Kusdiana; Anton Nugroho; Abdul Rahman
JOURNAL ASRO Vol 11 No 2 (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 | Full PDF (276.032 KB) | DOI: 10.37875/asro.v11i2.282

Abstract

Fuel is one of the important components in the combustion process. A good fuel is a clean fuel where the fuel is colorless, watery, has a high flash point, it can ignite spontaneously at a temperature of 350ºC, and has a specific gravity of about 0.82-0.86. On the other hand, KRI Kelabang-826 is an Indonesian republic warship that functions as a patrol boat. This causes the ship to have a medium duty engine, the MTU 12 V 4000 M 71 engine. This engine itself is a sophisticated engine because it uses common rail technology with a High-Pressure Pump as the supplying pump. This pump is very susceptible to damage, this is proven by not achieving the life time of the High-Pressure Pump which is 7500 Running Hours or once a W5- level maintenance. This is caused by poor quality of fuel, where the fuel used contains water and impurities. Therefore, the preventive ways are needed in order to achieve the life time of this High-Pressure Pump component. Keywords: Fuel Quality, MTU 12 V 4000 M 71, High-Pressure Pump, and Condor Class.
ANALISA ALIRAN UDARA DI KAMAR MESIN PADA KRI OSWALD SIAHAAN – 354 DENGAN PENDEKATAN CFD (COMPUTIONAL FLUIDS DYNAMICS) Sutrisno Sutrisno; Novi Shobi; Irfan Syarif Arief
JOURNAL ASRO Vol 7 (2017): Jurnal Analisis Sistem & Riset Operasi
Publisher : Indonesian Naval Technology College - Sekolah Tinggi Teknologi Angkatan Laut - STTAL

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Abstract

Temperatur udara kamar mesin di KRI Oswald Siahaan-354 setelah repowering, pada saat operasional rata-rata suhu mencapai 60°C – 65°C.Kondisi ini mempengaruhi untuk kerja peralatan dan operator permesinan yang ada di dalamnya.Sedangkan temperatur udara maksimal yang direkomendasikan berdasarkan Llyods Register adalah dibawah 45°C.Karena ruangan ini kedap dari hubungan luar maka sirkulasi udara keluar dan masuk kamar mesin dibantu secara mekanis untuk mencukupi kebutuhan udara.Oleh karena itu dibutuhkan suatu rancangan saluran udara masuk dan keluar untuk menjaga temperatur ruangan sesuai dengan standar aturan yang ditentukan. Dari rancangan sistem ducting saluran udara pada kamar mesin akan diperoleh aliran udara yang bersirkulasi di dalam kamar mesin. Pola aliran udara ( temperatur, kecepatan, tekanan) dapat diketahui dengan simulasi Computional Fluid Dynamics (CFD). Dengan simulasi CFD diharapkan dapat diketahui fenomena pola aliran udara di dalam kamar mesin, sehingga dapat diketahui sistem ventilasi yang dapat bekerja dengan optimal.Dimana dalam simulasi menggunakan CFD akan dilaksanakan simulasi pengkondisian udara sebanyak 6 (enam) kali variasi percobaan. Penelitian ini bertujuan untuk mendapatkan rancangan sistem ventilasi, saluran udara (ducting) yang cocok dan suplai udara yangcukup agar temperatur udara yang direkomendasikan tercapai.Sehingga pada akhirnya dapat ditentukan spesifikasi dan besarnya daya dan kapasitas bloweryang dibutuhkan. Kata kunci: Sistem ducting, ventilasi, Simulasi CFD
Co-Authors Abdul Rahman Agoes Santoso Agung Budi Kurniawan Agung Tresnadi Ahmadi Ahmadi Amri Rahmatullah Andi Mawanto Anton Nugroho Arie Handito Arief Saepullah Ary Kurniawan As'ad Aris Mustofa Avando Bastari Ayip Rivai Prabowo Bagiyo Herwono Bambang Suharjo Cahya Kusuma Chris Rinaldi Dedy Aryanto Deni Kristanto Djoko Kriswanto Giani Ferianto Heru Mirwanto I Made Jiwa I Made Jiwa Astika I Nengah Putra I Nengah Putra A I Nengah Putra Apriyanto Irfan Syarif Arief Juni Heri Budianto Mohamad Faikhul Himam Muhammad Askhuri Muhammad Syaifi Muhendi Muhendi Muksin Muksin Novi Shobi Okol S Suharyo Okol Sri Suharyo Priyadi Hartoko R Fajar Antariksa Rachmana F Antariksa Raditya Novianto Rakhmad Susilo Setiawan Bernadi Sunarta Sunarta Suparno Suparno Suparno, Suparno Sutikno Wahyu Hidayat Udisubakti Cipto Mulyono Udisubakti Cipto Mulyono Udisubakti Ciptomulyono wawan kusdiana Yudha Sukma Perdana Yudi Handoko Zainal Syahlan