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Aryananta Lufti
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PENGABDIAN KEPADA MASYARAKAT PRODI TEKNIK MESIN PERTAHANAN AKMIL KEPADA MASYARAKAT KELURAHAN KARANGASEM KABUPATEN GUNUNG KIDUL YOGJAKARTA Aryananta Lufti; Budi Harjanto; Sukahar Sukahar
JURNAL NAGARA BHAKTI Vol. 2 No. 1 (2023): AGUSTUS 2023
Publisher : PPM Sdirjianbang Akademi Militer

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Abstract

Karangasem Village, which is located in the Gunung Kidul area, Yogyakarta, is a reflection of the long journey of the local community and its forerunners which are entwined in a rich history. The first trace in the history of Kelurahan Karangasem brings us back to the roots of the traditional culture that underlies people's lives in this region. The purpose of community service of the Defense Mechanical Engineering Study Program is as a manifestation of the implementation of the knowledge and skills possessed by Lecturers and Cadets to people's lives related to the field of mechanical engineering. The method used is direct practice in the field. The result of the community service was the achievement of socialization activities and free servicing of 35 motorbikes in the Karang Asem Village, Gunung Kidul, Yogyakarta.  
PERANAN UDARA PANTAI TERHADAP KOROSI BALING-BALING HELIKOPTER HUGHES-300C Aryananta Lufti; Budi Harjanto; Frangky Silitonga
JURNAL MEKANIKASISTA Vol. 10 No. 1 (2022): NOVEMBER 2022
Publisher : PPM Sdirjianbang Akademi Militer

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Abstract

The purpose of this study includes three important things, including the effect of coastal air on the coastal environment, corrosion rate, and hardness of the Heli Hughes-300C propeller. The method used is a qualitative approach using a corrosion rate measuring device, namely Cell 3 Electrodes with liquid seawater from Maron Beach, Semarang as a corrosion medium. Each specimen will be tested for composition, calculated corrosion rate and tested for hardness. Specimen Making: Specimen making for this test was carried out by taking part of the Hughes 300C Helicopter propeller and then forming it to the size of the tube. Composition test: The composition test was carried out at the UGM Engineering Materials Laboratory using a spectrometer. Based on the results above, it was found that the Hughes 300C propeller after being corroded had a higher hardness value (average VHN 135.75kgf/mm2) compared to the one before it was corroded (average VHN 128.79 kgf/mm2). These results indicate that the propeller after being corroded will be more rigid, where there is a shift in the hardness standard value of the propeller. A brittle propeller will break more easily when it hits a hard impact in the air compared to a low-friction propeller due to the movement of the flap on the propeller when the blade angle changes and the push from the wind when flying.
Co-Authors Budi Harjanto Budi Harjanto Frangky Silitonga Sukahar Sukahar