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All Journal MUSTEK ANIM HA Scientific Journal of Mechanical Engineering Kinematika
Aris Sandi
Program Studi D2 Perawatan Mesin Pengolah Hasil Perkebunan, Politeknik LPP
Automotive Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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SIMULASI PERFORMA AERODINAMIKA NACA 1408 PADA APLIKASI TURBIN ANGIN DENGAN VARIASI PANJANG GURNEY FLAP Eli Kumolosari; Aris Sandi; Yulia Venti Yoanita; Sinung Tirtha Pinindriya; Dondi Kurniawan
MUSTEK ANIM HA Vol 12 No 02 (2023): MUSTEK ANIM HA
Publisher : Faculty of Engineering, Musamus University, Merauke, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35724/mustek.v12i02.5418

Abstract

Airfoil merupakan bagian dari turbin angin yang memiliki fungsi untuk mengubah energi angin menjadi gaya. Performa aerodinamika airfoil akan mempengaruhi efisiensi turbin angin secara keseluruhan. Salah satu cara untuk meningkatkan performa aerodinamika airfoil adalah dengan menambahkan gurney flap (GF). Pada penelitian ini dilakukan simulasi airfoil NACA 1408 dengan penambahan GF yang panjangnya divariasikan antara 0,12-0,21%c pada sudut serang 0o. Hasil simulasi dengan software Simflow menunjukkan bahwa nilai Cl/Cd tertinggi dihasilkan pada panjang GF 0,18%c yaitu sebesar 20,185. Selain nilai Cd, Cl, dan Cl/Cd, juga dihasilkan visualisasi distribusi kecepatan dan tekanan udara yang melewati airfoil. Dari hasil visualisasi tersebut terlihat bahwa hasil simulasi sesuai dengan Hukum Bernoulli, yaitu kecepatan bagian bawah airfoil lebih rendah dari bagian atasnya, yang mengakibatkan tekanan bagian bawah lebih tinggi dari bagian atasnya, sehingga menghasilkan gaya angkat (lift force). Kata kunci: Turbin angin, airfoil, NACA 1408, simulasi, Cl/Cd
ANALISIS KINERJA SAYAP ORNITHOPTER SEPERTI-BURUNG SEDERHANA Aris Sandi; Indra Adji Sulistijono; Endah Suryawati Ningrum
Scientific Journal of Mechanical Engineering Kinematika Vol 8 No 2 (2023): SJME Kinematika Desember 2023
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

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Abstract

An ornithopter or flapping-wing is a robot that resembles the wings’ mechanics of birds, insects or bats. The application of this type of UAV ranges from photography to the military. This study's main discussion is designing and constructing the ornithopter wing mechanical system with a double-joint wing flapping system. The novelty submitted in this study was the material used to construct the ornithopter wing, namely rod carbon for the skeleton and plastic for the wing. The aim was to discover the aerodynamic performance of the wing and the whole ornithopter. The study results showed that for single wing, the value of CL/CD was high. However, the ornithopter design should be improved to get the thrust force higher than drag force. In addition, the velocity starts to increase stably at throttle 33.3%. Furthermore, for the ornithopter, it was found that the lift force was greater than the down force, so that, theoretically, the robot could fly. The largest lift occurred when the frequency values were 0.88 and 0.97
Co-Authors Dondi Kurniawan Eli Kumolosari Endah Suryawati Ningrum Indra Adji Sulistijono Sinung Tirtha Pinindriya Yulia Venti Yoanita