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All Journal Jurnal Rekayasa Mesin Automotive Innovations Journal
Syafria Wildan Hadi
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Automotive Engineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Mechanical Engineering

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Performance Test of Airbus A380-like using GAMA Water Tunnel and Numerical Approach Syafria Wildan Hadi; Fauzun; Ata Syifa' Nugraha; Feri Hidayatulloh; Hijriawan, Miftah
Jurnal Rekayasa Mesin Vol. 20 No. 3 (2025): Volume 20, Nomor 3, Desember 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i3.7159

Abstract

This study investigates the aerodynamic characteristics of the Airbus A380 model using a combination of water tunnel experimentation and Computational Fluid Dynamics (CFD) analysis. The research aims to analyze the relationship between the angle of attack (AOA) and the resulting lift and drag coefficients, providing insights into aerodynamic performance at low-speed flow conditions. Experiments were conducted using the GAMA Water Tunnel with a 1:416 scaled model of the A380. Lift and drag forces were measured using a load-cell sensor connected to an Arduino microcontroller, while CFD simulations were performed using Computational Fluid Dynamics (CFD) with the k–ω SST turbulence model. The simulation and experimental results were compared to validate the numerical approach. The findings show that both lift and drag coefficients increase with AOA up to a critical point, beyond which stall occurs at approximately 14°. The CFD results closely align with the experimental data, demonstrating strong agreement between the two methods. This research validates the reliability of water tunnel testing for aerodynamic studies and contributes to the development of cost-effective experimental methodologies for aircraft performance evaluation.
Pembuatan Kontur Permukaan Piston Diameter 50 mm, Tinggi 15 mm AA 2618 Kapasitas 2 Buah/Jam Ata Syifa’ Nugraha; Syamsul Hadi; Miftah Hijriawan; Feri Hidayatulloh; Syafria Wildan Hadi
Automotive Innovations Journal Vol. 2 No. 1 (2026): September (Article In Press)
Publisher : Department of Automotive Engineering Technolgy

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Abstract

Lack of turbulence in mixing between air and fuel in the combustion chamber cylinder of a 100 cm3 4 stroke Otto engine is a problem faced. The purpose of making is to obtain a piston surface contour that produces optimal turbulence in mixing between air and fuel in the combustion chamber cylinder. The manufacturing method includes: piston surface contour design, experiments with several contour shapes on the impact of turbulence (trial and error) and data analysis, selection of piston material from AA2618 with a diameter of 50 mm and a height of 15 mm, comparison of power results from the results of various contour shapes from previous research, making a wavy contour from the inlet valve direction to the exhaust valve facing the hill height of 0.2 mm and a valley depth of 0.2 mm using CNC milling machining with a distance between hills of 3.5 mm, combustion trials in the cylinder with a comparison of power results between with and without a piston surface contour. The manufacturing results are in the form of a piston made of AA2618 material with a wavy contour surface measuring 0.2 m high and 0.2 mm valley from the inlet valve to the exhaust valve with a production cost of Rp. 100.000/unit, a production process duration of 30 minutes/unit which implies that the power of a 100 cm3 motor can increase by around 12%.
Co-Authors Ata Syifa' Nugraha Ata Syifa’ Nugraha Fauzun Feri Hidayatulloh Hijriawan, Miftah Miftah Hijriawan Syamsul Ph.D M.A. Hadi