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All Journal Jurnal Mahasiswa Matematika Aceh International Journal of Science and Technology Jurnal Pengabdian Masyarakat Nauli Jurnal TNI Angkatan Udara
Eka Lambda Irianto, Eka Lambda
Brawijaya University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences

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ANALISIS DINAMIK MODEL PREDATOR-PREY DENGAN CONTINUOUS THRESHOLD HARVESTING Irianto, Eka Lambda
Jurnal Mahasiswa Matematika Vol 3, No 6 (2015)
Publisher : Jurnal Mahasiswa Matematika

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Abstract

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Optimizing Mechanical Properties of Al6063 Aluminum Alloy through Silicon Weight Percent Variation and Heat Treatment at the Propeller Shaft Materials Casting Joni, .; Bhiftime, Eka Irianto
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.3.37662

Abstract

Ship propulsion relies significantly on the efficiency of its components, with the shaft propeller playing a pivotal role in navigating vessels through water. Traditionally constructed from steel, this study explores an unconventional approach by employing an Aluminum Alloy base material, specifically the 6063 alloy, for the propeller shaft model. The material's mechanical properties become a crucial focus, prompting a detailed investigation into the impact of silicon and magnesium elements through a meticulous heat treatment process. The experimental procedure involves heating the Al6063 alloy to 790C, transitioning to a complete liquid state, and subsequently incorporating silicon and magnesium at specific temperatures. The stirring process, executed with a mechanical stirrer, sets the stage for the alloy's casting into a mold under pressure. Post-casting, the propeller shaft undergoes a comprehensive heat treatment regimen, including solution treatment, quenching, and artificial aging. The study's findings showcase a remarkable reduction in porosity with increasing silicon elements, reaching its lowest point at 4% wt Silicon. Tensile tests demonstrate a direct correlation between silicon addition and increased stress values, with the highest stress observed at 4% wt Silicon. Concurrently, hardness values ascend proportionally with silicon inclusion, peaking at 4% wt Silicon. The thorough analysis presented here highlights the effectiveness of silicon elements in enhancing the mechanical characteristics of the shaft propeller made of aluminum alloy, which bodes well for future developments in ship propulsion technology.
Desain Optimalisasi Penggunaan Sepeda Motor untuk Sarana Transportasi Darat dan Air pada Masyarakat Kampung Putali Kawasan Danau Sentani Jayapura Mardamsyah, Adam; Bhiftime, Eka Irianto; Fadri, Muhammad Ferry; Rofi’i, Ahmad Syafiq; Awom, Ilan Ramond; Felle, Roland Claudio
Jurnal Pengabdian Masyarakat Nauli Vol. 3 No. 2 (2025): Februari, Jurnal Pengabdian Masyarakat Nauli
Publisher : Marcha Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/nauli.v3i2.171

Abstract

Kawasan sekitar Danau Sentani, Jayapura, menghadapi tantangan mobilitas yang kompleks akibat geografinya yang unik, dengan pulau-pulau kecil tersebar di tengah danau. Penduduk, terutama di Kampung Putali, mengalami keterbatasan akses transportasi, terutama karena ketergantungan pada sepeda motor yang hanya dapat digunakan di daratan. Solusi inovatif yang diusulkan adalah pengembangan perahu berpenggerak sepeda motor, yang dapat membawa sepeda motor antar pulau dan meningkatkan aksesibilitas. Hasil pengujian menunjukkan bahwa perahu ini berhasil memenuhi harapan dan mendapat tanggapan positif dari masyarakat. Namun, evaluasi lebih lanjut diperlukan terkait keselamatan. Kesimpulan dari proyek ini adalah bahwa perahu berpenggerak sepeda motor memiliki potensi besar untuk meningkatkan mobilitas dan ekonomi lokal. Saran untuk pengembangan selanjutnya adalah memperkuat sinergi antara berbagai pihak terkait dan melakukan penyempurnaan teknis, termasuk penambahan fitur solar cell.
5. EXPERIMENTAL FIGHTER AIRCRAFT GROUND MANEUVER SIMULATION Farida, Ida; Kukuh Prasetyo; Eka Irianto Bhiftime; Nick Holson Manggiring Silalahi; Ahmad Hasan Fauzi; Kurniawan; Tia Dikatama Tsania
Jurnal TNI Angkatan Udara Vol 5 No 2 (2026): Jurnal TNI Angkatan Udara Triwulan Kedua
Publisher : Staf Komunikasi dan Elektronika, TNI Angkatan Udara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62828/jpb.v5i2.211

Abstract

This study aims to explore and analyze various factors that affect groundmaneuvers on fighter aircraft, focusing on the steering system and landing gear design.Fighter aircraft, as a major component in military operations, must not only have optimal airmaneuverability, but also be able to maneuver on the ground effectively and efficiently. Theability to move quickly and precisely on the ground is essential. Precise ground maneuversnot only ensure the safety of the aircraft, but also affect operational efficiency and responsetime in dealing with emergency situations. In this study, simulations were conducted using amathematical model developed in MATLAB/Simulink software to model and analyze aircraftmovements during the ground operation phase. This model considers various importantparameters such as aircraft speed, nose landing gear deflection, and weight distributionsettings to obtain more accurate results. The results of this simulation show that changes inthe nose landing gear deflection affect aircraft movements, including the ability to changedirection with a smaller radius and shorter time. Thus, the results of this study are expectedto provide new insights into fighter aircraft design to improve ground maneuver performanceand improve fighter aircraft operational efficiency in various field conditions.
Co-Authors Ahmad Hasan Fauzi Awom, Ilan Ramond Fadri, Muhammad Ferry Felle, Roland Claudio Ida Farida Joni Kukuh Prasetyo Kurniawan Mardamsyah, Adam Nick Holson Manggiring Silalahi Rofi’i, Ahmad Syafiq Tia Dikatama Tsania