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All Journal EPI International Journal of Engineering
Ahmad Fitriadhy
Programme of Maritime Technology, School of Ocean Engineering, University Malaysia Terengganu
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering

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Heave and Pitch Motion Performances of a Ship Towing System Incorporated with Symmetrical Bridle Towline Model Ahmad Fitriadhy; Nur Adlina Aldin; Nurul Aqilah Mansor; Nur Aqilah Hanis Zalizan
EPI International Journal of Engineering Vol 2 No 1 (2019): Volume 2 Number 1, February 2019 with Special Issue on Composite Materials & Stru
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.022019.06

Abstract

An investigation on vertical motion characteristics of a ship towing system incorporated with symmetrical bridle towline configuration set a real challenge for the naval architect engineer. This paper presents a Computational Fluid Dynamic (CFD) approach to analyse heave and pitch motion performances in waves. Several towing parameters such as various towline length and towing’s velocity have been taken into account. Here, 1B (barge) is employed in the simulation; and designated as a towed ship. The results revealed that the subsequent increase of the towline lengths has been basically proportional with the increase of her heave motion; while inversely decrease in pitch motions. In addition, the effect of the extending towline length = 1.0 to 3.0 resulted in insignificant effect to the towline tension. However, the increase of the towing’s velocity from 0.509 m/s to 0.728 m/s has led to significantly increase her heave motion and the towline tension by 40.46% and 24%, respectively; meanwhile, the pitch motion barge has sufficiently decreased by 35.94%. This simulation has been beneficial for the towing operator to ensure a higher level of the safety navigation of ship towing system.
Feasibility Analysis of Runway, Taxiway and Apron Dimensions of Torea Airport in Fakfak Regency, West Papua Province Muhammad Yunus; Ratna Septa Sari Tuhepaly; Ahmad Fitriadhy
EPI International Journal of Engineering Vol 4 No 2 (2021): Volume 4 Number 2, August 2021
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/10.25042/epi-ije.082021.09

Abstract

The development of transportation sector modes, especially air transportation modes, is currently experiencing a very significant development. This is because the mode of air transportation in the form of airplanes can make people move very quickly, unlike land and sea transportation modes which require a longer time. In this regard, an airport that meets the requirements in terms of flight security and safety is needed. The aim of the study was to analyze the dimensions of the runway, taxiway, appron and evaluate the feasibility of the runway, taxiway, appron dimensions at Torea Airport in Fakfak Regency, West Papua Province. From the results of the research conducted, it was found that the dimensions of the runway length of Torea Airport have met the minimum requirements set by the International Civil Aviation Organization (ICAO) in 2016 with a runway length of 1201.8 m Torea Airport but in terms of requirements for the type of aircraft ATR 72-600 does not meet the requirements. While for the standard dimensions of the runway width and the width of the runway shoulder of Torea Airport according to the Regulation of the Ministry of Transportation of the Directorate General of Civil Aviation Number: KP 39 of 2015 concerning Technical and Operational Standards of Civil Aviation Safety Regulations
Co-Authors Muhammad Yunus Nur Adlina Aldin Nur Aqilah Hanis Zalizan Nurul Aqilah Mansor Ratna Septa Sari Tuhepaly