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All Journal Jurnal Teknik Mesin Journal of Mechanical Engineering Science and Technology Turbo : Jurnal Program Studi Teknik Mesin Buletin Ilmiah Sarjana Teknik Elektro Jurnal Pengabdian, Pendidikan dan Teknologi Mechanical Engineering for Society and Industry Indonesian Community Journal Journal of Mechanical Engineering, Science, and Innovation RESWARA: Jurnal Riset Ilmu Teknik
Ahmad Atif Fikri
Universitas Negeri Malang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Penerapan Alat Bantu Bongkar Shockbreaker Berbasis Hidrolik dan Pneumatik untuk Meningkatkan Produktivitas UMKM Bengkel Shockbreaker Fikri, Ahmad Atif; Irdianto, Windra; Kusuma, Fuad Indra
I-Com: Indonesian Community Journal Vol 6 No 1 (2026): I-Com: Indonesian Community Journal (Maret 2026)
Publisher : Fakultas Sains Dan Teknologi, Universitas Raden Rahmat Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/i-com.v6i1.8639

Abstract

Kebutuhan layanan servis shockbreaker sepeda motor terus meningkat seiring pertumbuhan jumlah kendaraan bermotor di Indonesia. Namun, sebagian besar bengkel skala kecil (UMKM) masih menggunakan metode manual dalam pembongkaran shockbreaker yang membutuhkan waktu lama, tenaga besar, serta berisiko terhadap keselamatan kerja. Kegiatan pengabdian kepada masyarakat ini bertujuan menerapkan inovasi teknologi tepat guna berupa alat bantu bongkar shockbreaker berbasis hidrolik dan pneumatik pada bengkel mitra di Kabupaten Blitar. Metode pelaksanaan meliputi analisis kebutuhan, perancangan dan pembuatan alat, uji kinerja, pelatihan penggunaan, serta pendampingan operasional. Hasil kegiatan menunjukkan bahwa alat berfungsi efektif dengan dua sistem kerja, yakni hidrolik (manual) dan pneumatik (otomatis). Penggunaan alat mampu menurunkan waktu servis dari ±90 menit menjadi ±60 menit per unit, meningkatkan kapasitas layanan dari 4 menjadi 7 unit per hari, serta menaikkan omzet harian bengkel sekitar 75%. Inovasi ini terbukti meningkatkan produktivitas dan daya saing mitra serta berpotensi direplikasi di UMKM otomotif lainnya.
Computational Fluid Dynamics Analysis of Wing-Tip Modifications on Tapered Wings to Enhance Aerodynamic Performance of Unmanned Aerial Vehicles Hafid, Ahmad; Fikri, Ahmad Atif
RESWARA: Jurnal Riset Ilmu Teknik Vol. 4 No. 2 (2026): RESWARA: Jurnal Riset Ilmu Teknik, April 2026
Publisher : Lembaga Penelitian dan Pendidikan (LPP) Kalibra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70716/reswara.v4i2.498

Abstract

Unmanned Aerial Vehicles (UAVs) are widely deployed in applications that require high aerodynamic efficiency, extended endurance, and precise control. The aerodynamic performance of UAVs is strongly influenced by wing design, particularly at the wingtips, where intense vortices can generate significant induced drag and promote early stall. This study employs a full-factorial design of experiments (DoE) combined with computational fluid dynamics (CFD) simulations using the k–ω SST turbulence model to investigate the effect of wing tip modifications on various angle of attack (AoA). The results indicate that the maximum lift coefficient occurs at an AoA of 10° for all wingtip configurations, with the rounded-edge wingtip achieving the highest value (Cl = 0.125). The drag coefficient increases gradually from AoA 0° to 10°, followed by a sharp rise up to 15°, indicating early stall. The highest lift-to-drag ratio is obtained at AoA = 5°, where the rounded-edge wingtip demonstrates superior aerodynamic efficiency (Cl/Cd = 20.4). Analysis of the pitching moment coefficient reveals a nose-down tendency at low to moderate AoA, transitioning to an aggressive nose-up behavior at higher angles of attack. Overall, the rounded-edge wingtip provides the most favorable aerodynamic performance for fixed-wing UAVs, offering improved efficiency and stable longitudinal characteristics within low to moderate AoA operating regimes.
Co-Authors Abda Abda Ahmed Jabari Aminnudin, Aminnudin Avita Ayu Permanasari Bello, Nasir Garba Faqih Fadillah Fuad Indra Kusuma Ghazali, Mariyam Jameelah Habiby, M. Nuril Anwar Hafid, Ahmad Heru Suryanto Irham Fadlika Jibril Maulana Kurniawan, Dany Ardymas M. Alfian Mizar Maftuchin Romlie Masera, Kemal Mito, Mohamed T Muhdi, Krisna Dwipa Pramono, Diki Dwi Pratama, Daniel Febrian Ramadhan, Rahmad Ikrom Razak, Jeefferie Abd. Rr. Poppy Puspitasari Saeful, Albarrobi Nabila Saiful, Jusef Subhan, Muhammad Ferindin Nuha Windra Irdianto