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Development of a ‘Fish Tail’ Rudder to Improve a Ship’s Maneuverability in Seaway Aries Sulisetyono
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.376

Abstract

The maneuverability of a ship at seaway is strongly influenced by a design of rudder. An innovative design of rudder based on a tail shape of fish was developed with the intent of improving an efficiency of ship maneuverability. Two designs of rudders were proposed i.e. the rudder of forked which is a rudder with an area reduction on the middle part, and the lanceolate shape or a rudder with additional area on the middle part. In evaluation of the rudder designs performance, the numerical approach of Computational Fluid Dynamic (CFD) was applied to determine a side force generated by rudder using the commercial software of FLUENT. Numerical simulations were performed on the rudder designed of rectangular, forked and lanceolate which had similar a surface area with the variations of rudder angle such as 100, 200 and 300 due to the uniform fluid flow at a constant speed. Further simulations was performed on the two forked rudder designed which takes into account the influence of propeller due to fluid flow on the rudder surface. It had shown the velocity of fluid flow behind the shaft of propeller very small in which the middle part of the rudder produced less lift force compare to the other part of rudder. Mathematical and numerical model of ship maneuvering were developed in order to evaluate the performance of a ship maneuvering in seaway based on the IMO standards on turning test. The simulation results had shown the rudder of forked produce the ship maneuvering performance that exceeds the performance of rectangular rudder as well as lanceolate rudder.
Estimation of Total Suspended Sediment and Chlorophyll-A Concentration from Landsat 8-Oli: The Effect of Atmospher and Retrieval Algorithm Lalu Muhamad Jaelani; Resti Limehuwey; Nia Kurniadin; Adjie Pamungkas; Eddy Setyo Koenhardono; Aries Sulisetyono
IPTEK The Journal for Technology and Science Vol 27, No 1 (2016)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (710.683 KB) | DOI: 10.12962/j20882033.v27i1.1217

Abstract

Total Suspended Sediment (TSS) and Chlorophyll-a (Chl-a) are globally knows as a key parameters for regular seawater monitoring. Considering the high temporal and spatial variation of water constituent, remote sensing technique is an efficient and accurate method for extracting water physical parameter. A high accurate estimated data derived from remote sensing depends on an accurate atmospheric correction algorithm and physical parameter retrieval algorithms. In this research, we evaluated the accuracy of atmospheric corrected product of NASA as well as develop algorithms for estimating TSS and Chl-a concentration over Poteran and Gili Iyang island water using Landsat-8 OLI data. The data used in this study was collected from Poteran’s waters (9 stations) on April 22, 2015 and Gili Iyang’s waters (six stations) on October 15, 2015. Low correlation between in situ and Landsat Rrs(λ) (R2= 0.106) indicated that atmospheric correction algorithm performed by NASA has a limitation. The TSS concentration retrieval algorithm produced acceptable accuracy both over Poteran’s Waters (RE of 4.60% and R2 of 0.628) and over Gili Iyang’s waters (RE of 14.82% and R2 of 0.345). Although the R2 lower than 0.5, the relative error was more accurate than the minimum requirement of 30%. Whereas, The Chl-a concentration retrieval algorithm produced acceptable result over Poteran (RE of 13.87% and R2 of 0.416) and failed over Gili Iyang’s waters (RE of 99.140 and R2 of 0.090). The low correlation between TSS or Chl-a measured and estimated TSS or Chl-a concentration were caused not only by performance of the developed TSS and Chl-a estimation retrieval algorithm but also the effect and accuracy of atmospheric corrected reflectance of Landsat product.
Stability Analysis of Catamaran Passenger Vessel with Solar Cell Energy in Calm Water Dedi Budi Purwanto; Aries Sulisetyono; Teguh Putranto
IPTEK The Journal for Technology and Science Vol 28, No 3 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (642.342 KB) | DOI: 10.12962/j20882033.v28i3.3222

Abstract

The use of solar energy as the driving force for the ship's tour seems to be a major theme in efforts to create a marine transportation that are environmentally friendly as part of the Energy Efficiency Design Index (EEDI) for the reduction of pollutant levels. The electrical energy generated by solar energy is not as much energy from fossil fuels so that the solar panel powered ship that can only be engaging with a limited range and speed.This type of catamaran hull design that has two symmetrical hull which allows to have an expansive deck, small boat barriers and good stability. The shape of the deck of the ship will contribute extents solar panels that can be utilized as a producer of power required at the time of calculation of powering the vessel. The analysis of the stability of the vessel performed numerically with reference to the IMO regulations requiring minimum value stability arm at certain angles. The output of this research is catamaran vessel that have battery, solar panel, electric motor moving with speed 5 knots.
OPTIMASI HAMBATAN KAPAL TERHADAP SUDUT KEMIRINGAN BOW KAPAL PATROLI 75 M Bagus Gelis Pratama Putra; Aries Sulisetyono
JURNAL JALASENA Vol 1 No 2 (2020): FEBRUARI 2020
Publisher : Fakultas Sains dan Teknologi Universitas Karimun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (543.635 KB) | DOI: 10.51742/jalasena.v1i2.98

Abstract

Aplikasi dari kapal jenis fast monohull dalam bentuk kapal patroli, coastguard, dan kapal perang semakin meningkat dalam beberapa dekade belakangan ini. Kapal fast monohull memiliki desain yang dirancang sedemikian rupa untuk mencapai kecepatan yang diinginkan. Dalam pembuatan sebuah kapal selalu memperhatikan parameter- parameter desain desain yang direncanakan juga pertimbangan sisi ekenomis. Dalam hal bentuk lambung, kapal fast monohull sudah berkembang dengan memiliki berbagai macam konfigurasi. Salah satu konvigurasi bentuk lambung yang cukup populer belakangan ini adalah bentuk ‘Axe Bow’ yang di desain oleh Delft University of Technology (TU Delft) dan Maritime Research Institute Netherlands (MARIN). Keunikan dari konvigurasi lambung ini adalah bentuk bow (haluan)-nya yang tegak lurus kedepan menyerupai kapak yang diklaim memiliki performa hidrodinamis yang baik. Pada penelitian ini dilakukan analisa hambatan terhadap bentuk lambung kapal patroli dengan konvigurasi perubahan sudut lambung yang mendekati tegak lurus hingga tegak lurus. Dan mendapatkan hasil bahwa sudut kemiringan 90’ pada bow memberikan aspek hidrodinamis yang paling baik diantara variasi lainnya dengan hambatan total (Rt) senilai 474.8 kN dengan metode Holtrop, 604.8 kN dengan metode Compton dan 633.4 kN dengan metode Fung.
Reliability Analysis of Passenger Ship Structure Conversion in Bali Straits Rizky Chandra Ariesta; Aries Sulisetyono; Totok Yulianto; Elwas Cahya Wahyu Pribadi
International Journal of Marine Engineering Innovation and Research Vol 7, No 4 (2022)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v7i4.14749

Abstract

LCT conversion passenger ships have been widely operated in the waters of the Bali Strait. Ship operations in the Bali Strait result in repeated loads on the structure. Repeated loading produces vertical and horizontal bending moments that act randomly due to waves. Based on this, it is necessary to analyze the structure of the ship. The purpose of this study was to analyze the reliability value of the ship structure operating in undulating waters. Wave analysis is performed using the spectral method to determine the value of the load acting on the ship, while the reliability calculation uses the Mean Value First Order Second Moment (MVFOSM) method to determine the reliability value. The analysis was carried out on a full load and an empty load. The value of the reliability of the structure at full load is 0.913615 and at empty load is 0.88948.
Pengembangan Pemanfaatan Ban Dalam Bekas Sebagai Lifejacket Untuk Menunjang Keselamatan Kapal Hasanudin, Hasanudin; Utama, I Ketut Aria Pria; Suastika, I Ketut; Sulisetyono, Aries; Setyawan, Dony; Nasirudin, Ahmad; Nugroho, Ardi; Pribadi, Sri Rejeki Wahyu; Rosa, Andrea Grech La
Sewagati Vol 9 No 1 (2025)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v9i1.2401

Abstract

Keselamatan kapal merupakan aspek penting dalam dunia pelayaran, namun peralatan keselamatan seperti lifejacket berstandar internasional sering kali terlalu mahal bagi pelayaran rakyat. Oleh karena itu, diperlukan solusi alternatif yang lebih terjangkau. Salah satu inovasi yang ditawarkan adalah pemanfaatan ban dalam bekas sepeda motor, yang merupakan limbah karet sulit terurai, sebagai bahan dasar pembuatan lifejacket murah. Dalam program pengabdian masyarakat ini, dilakukan kolaborasi dengan peneliti dari University College London yang berkunjung ke Indonesia. Produk lifejacket dari ban dalam bekas sepeda motor telah melalui pengujian di laboratorium University College London dan uji coba lapangan di penyeberangan tambang Keputih-Wonorejo. Hasil pengujian menunjukkan bahwa produk ini layak digunakan sebagai alternatif yang ekonomis dan aman. Ke depannya, produk ini direncanakan untuk diterapkan di berbagai daerah lain. Inovasi ini diharapkan dapat meningkatkan keselamatan kapal secara ekonomis sekaligus mengurangi limbah karet yang sulit terurai. Dengan demikian, program ini tidak hanya mendukung keselamatan pelayaran rakyat, tetapi juga berkontribusi pada pengelolaan limbah yang lebih berkelanjutan serta mendukung pelestarian lingkungan.