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Aryananta Lufti
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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.
Model Pengelolaan Sampah Berkelanjutan Berbasis Komunitas di Kecamatan Taktakan Kota Serang Sukahar Sukahar; Aryananta Lufti; Budi Harijanto; Sugihandoko
JURNAL NAGARA BHAKTI Vol. 4 No. 2 (2026): FEBRUARI 2026
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/nb.v4i2.462

Abstract

Penelitian ini bertujuan untuk menganalisis pengelolaan sampah berkelanjutan berbasis komunitas di Kecamatan Taktakan, Kota Serang, serta mengidentifikasi permasalahan dan upaya yang dilakukan dalam mendukung sistem pengelolaan yang efektif. Metode yang digunakan adalah pendekatan deskriptif kualitatif melalui observasi lapangan, wawancara, dan analisis data sekunder. Hasil penelitian menunjukkan bahwa volume sampah di Kecamatan Taktakan mencapai 5.600 kg per hari dengan dominasi sampah organik dari rumah tangga. Pemerintah bersama masyarakat telah mengembangkan 4 bank sampah induk dan 81 bank sampah unit, serta menerapkan metode pengolahan seperti incinerator dan controlled landfill di TPSA Cilowong. Partisipasi masyarakat meningkat seiring adanya manfaat ekonomi dari pengelolaan sampah. Namun, kendala masih ditemukan berupa keterbatasan infrastruktur, kapasitas angkut, dan keberadaan titik sampah liar. Sinergi antara pemerintah dan masyarakat menjadi faktor kunci dalam mewujudkan pengelolaan sampah yang berkelanjutan dan berorientasi pada peningkatan kualitas lingkungan serta kesejahteraan masyarakat.
PERENCANAAN ULANG RODA GIGI PINION PADA GARDAN BELAKANG KENDARAAN ISUZU OZ Aryananta Lufti; Edy Budi Santoso; Nurtjahyono
JURNAL MEKANIKASISTA Vol. 13 No. 1 (2025): NOVEMBER 2025
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i1.389

Abstract

Gears are one of the essential machine elements that function to transmit power and rotation accurately from one shaft to another. In the transmission system of the Isuzu OZ vehicle, the pinion gear plays an important role as the main driver in transferring power from the engine to the rear-wheel drive system. Gears are preferred over other transmission systems due to several advantages, including a more compact system, simple construction, high load-carrying capacity, high power transmission efficiency, and minimal slip occurrence. One of the most commonly used gear types in vehicle transmission systems is the bevel gear, where the pitch surface is conical, with its apex located at the intersection point of the shaft axes. Based on the shape and direction of the teeth, bevel gears are classified into four types: straight bevel, zerol bevel, spiral bevel, and hypoid bevel gears. The hypoid type is a development of the spiral bevel gear, offering higher efficiency and the ability to transmit greater torque in heavy-duty vehicles. Therefore, the selection and design of the pinion gear play a crucial role in improving the efficiency, durability, and overall performance of the Isuzu OZ vehicle transmission system.
PERANCANGAN ULANG SISTEM SUSPENSI SHOCKBREAKER PADA KENDARAAN BIMANTARA NENGGALA Heri Wijanarko; Sugihandoko; Aryananta Lufti
JURNAL MEKANIKASISTA Vol. 13 No. 1 (2025): NOVEMBER 2025
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i1.390

Abstract

To support the vehicle’s high operational activity, a redesign of the shock absorber suspension system on the Bimantara Nenggala vehicle is required. The goal is to make the shock absorber stronger and more durable when traversing rough road surfaces. This is because the Bimantara Nenggala vehicle, which is one of the official vehicles used at the Military Academy, has experienced frequent damage to its shock absorbers during use. The redesign was carried out by changing the steel wire diameter from 14 mm to 16 mm. The research results show that by increasing the wire diameter from 14 mm to 16 mm, the solid length of the spring changed from 56 mm to 96 mm. This modification also altered the number of coils from 2.5 to 4.5, and the spring deflection increased from 39.38 mm to 41.48 mm. This design demonstrates that using a 16 mm wire diameter provides better performance compared to a 14 mm wire diameter. Additionally, the resulting deflection and number of coils are improved compared to the original design.
ANALISIS PERBANDINGAN PENGGUNAAN BAHAN BAKAR GASOHOL BE-20 DAN BENSIN JENIS PERTAMAX TERHADAP PRESTASI MESIN KENDARAAN KIJANG 7K Budi Harjanto; Aryananta Lufti; Frangky Silitonga
JURNAL MEKANIKASISTA Vol. 13 No. 1 (2025): NOVEMBER 2025
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i1.392

Abstract

This research was conducted to determine the performance of an engine using a gasoline–ethanol fuel blend produced by the Enduro XL engine. To evaluate engine performance, calculations were carried out on effective power, fuel consumption, specific fuel consumption, and mass flow rate. In addition, theoretical mass flow rate, air–fuel ratio, volumetric efficiency, and thermal efficiency were also examined. The experiment was carried out under five variations of engine speed with a constant load, using only one type of fuel, namely Pertamax (gasoline) blended with 20% ethanol. The test results showed that the average power produced by the blended fuel was greater than that of pure gasoline. Fuel consumption increased with higher engine speed because the octane number of the gasoline–ethanol blend was higher than that of pure gasoline, making it more easily combustible. However, the higher the ethanol content in the fuel blend, the lower the air–fuel ratio, resulting in less complete combustion in the combustion chamber. The thermal efficiency of the blended fuel was generally lower than that of pure Pertamax, except for the 20% ethanol blend. Therefore, engine performance using Pertamax fuel was higher than that using BE-20 gasohol. However, fuel consumption for Pertamax was greater compared to BE-20 gasohol.
PENGARUH VARIASI KECEPATAN ANGIN TERHADAP KINERJA TURBIN ANGIN SUMBU HORIZONTAL Aryananta Lufti; Edy Budi Santoso; Nurtjahyono
JURNAL MEKANIKASISTA Vol. 13 No. 2 (2026): MEI 2026
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i2.519

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh variasi kecepatan angin terhadap kinerja turbin angin sumbu horizontal dengan jumlah sudu yang berbeda. Metode penelitian yang digunakan adalah eksperimen dengan variasi kecepatan angin sebesar 3,8 m/s, 4,7 m/s, dan 6,3 m/s pada turbin dengan 8 sudu dan 4 sudu. Parameter yang diamati meliputi tegangan, arus, daya, dan koefisien daya (Cp). Hasil penelitian menunjukkan bahwa peningkatan kecepatan angin berbanding lurus dengan peningkatan tegangan, arus, dan daya yang dihasilkan turbin. Turbin angin dengan 8 sudu menghasilkan kinerja yang lebih baik dibandingkan dengan turbin 4 sudu, terutama pada kecepatan angin 6,3 m/s dengan daya sebesar 4894,26 mW dan koefisien daya sebesar 35,51 × 10⁻⁶. Hal ini menunjukkan bahwa jumlah sudu dan kecepatan angin sangat berpengaruh terhadap performa turbin angin.
ANALISIS PERBANDINGAN SIFAT MEKANIK DAN KOMPOSISI MATERIAL PENA PEMUKUL SENAPAN SS1-V1 BUATAN PINDAD DAN FNC BUATAN BELGIA Sukahar; Aryananta Lufti; Achmad Hafid
JURNAL MEKANIKASISTA Vol. 13 No. 2 (2026): MEI 2026
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i2.520

Abstract

Penelitian ini bertujuan untuk menganalisis perbedaan sifat mekanik dan komposisi material pena pemukul pada senapan SS1-V1 buatan Pindad dan senapan FNC buatan Belgia. Metode yang digunakan meliputi pengujian komposisi kimia menggunakan spektrometer, pengamatan struktur mikro dengan mikroskop optik, serta pengujian kekerasan menggunakan metode Vickers. Hasil penelitian menunjukkan bahwa kedua material termasuk baja karbon sedang, namun memiliki perbedaan kandungan unsur seperti karbon (C), nikel (Ni), kromium (Cr), dan tembaga (Cu). Nilai kekerasan rata-rata pena pemukul FNC sebesar 379,46 kg/mm² lebih tinggi dibandingkan SS1-V1 sebesar 275,67 kg/mm². Selain itu, kandungan tembaga yang lebih tinggi pada SS1-V1 menyebabkan material lebih lunak dan cenderung mudah patah. Dengan demikian, pena pemukul FNC memiliki performa yang lebih baik dari segi kekerasan dan ketahanan terhadap keausan.
ANALISIS KINERJA MESIN DIESEL DENGAN DAN TANPA TURBOCHARGER PADA KENDARAAN ISUZU PANTHER Sukahar; Aryananta Lufti; Muhammad Zainuddin
JURNAL MEKANIKASISTA Vol. 13 No. 2 (2026): MEI 2026
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v13i2.522

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh penggunaan turbocharger terhadap peningkatan daya dan torsi pada mesin diesel 4JA-1. Penelitian dilakukan dengan metode eksperimen melalui pengujian performa mesin dalam dua kondisi, yaitu mesin diesel tanpa turbocharger dan mesin diesel menggunakan turbocharger. Pengambilan data dilakukan dengan membandingkan nilai daya, torsi, dan kecepatan kendaraan pada masing-masing kondisi pengujian. Hasil penelitian menunjukkan bahwa penggunaan turbocharger mampu meningkatkan performa mesin secara signifikan. Pada mesin diesel dengan turbocharger diperoleh daya maksimum sebesar 76 Hp pada kecepatan 110 km/jam, sedangkan mesin tanpa turbocharger hanya menghasilkan 62 Hp. Nilai torsi tertinggi pada mesin diesel turbo mencapai 375 Nm pada kecepatan 60 km/jam, sedangkan mesin tanpa turbo hanya mencapai 310 Nm. Peningkatan tersebut terjadi karena turbocharger mampu meningkatkan suplai udara ke ruang bakar sehingga proses pembakaran menjadi lebih sempurna dan efisien. Berdasarkan hasil penelitian dapat disimpulkan bahwa penggunaan turbocharger berpengaruh positif terhadap peningkatan daya dan torsi mesin diesel tanpa perlu melakukan perubahan besar pada komponen utama mesin.
Co-Authors Achmad Hafid Budi Harijanto, Budi Budi Harjanto Edy Budi Santoso Frangky Silitonga Heri Wijanarko Muhammad Zainuddin Nurtjahyono Sugihandoko Sukahar Sukahar Sukahar