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All Journal MUSTEK ANIM HA Conference SENATIK STT Adisutjipto Yogyakarta Angkasa: Jurnal Ilmiah Bidang Teknologi KACANEGARA Jurnal Pengabdian pada Masyarakat JURNAL CRANKSHAFT Scientific Journal of Mechanical Engineering Kinematika Community Development Journal: Jurnal Pengabdian Masyarakat International Journal of Aviation Science and Engineering Jurnal PADMA: Pengabdian Dharma Masyarakat Vortex Jurnal Peradaban Masyarakat (JPM) Open Science and Technology Journal of Automotive Technology Vocational Education Joong-Ki Joong-Ki
Eli Kumolosari
Institut Teknologi Dirgantara Adisutjipto
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Peningkatan Pengetahuan Manfaat Haki bagi UMKM di Kelurahan Banguntapan, Kecamatan Banguntapan, Kabupaten Bantul Santoso, Djarot Wahju; Subarjo, Abdul Haris; Nugroho, Fajar; Setiabudi, Dedet Hermawan; Sudarmanto, Sudarmanto; Kumolosari, Eli; Triwibowo, Nur Ahmad
Jurnal Peradaban Masyarakat Vol. 3 No. 6 (2023): Jurnal peradaban masyarakat (JPM)
Publisher : LPPM STIE Hidayatullah Depok

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55182/jpm.v3i6.338

Abstract

Bagi sebagian orang belum mengerti apakah yang disebut dengan Hak Atas Kekayaan Intelektual (HAKI), Hak Kekayaan Intelektual (HaKI) telah berkembang jenisnya. Pada 20 Desember 2000 HaKI juga meliputi bidang-bidang: Desain Industri. Desain Tata Letak Sirkuit Terpadu. dan Rahasia Dagang. Desain Industri memberikan perlindugan bagi karya intelektual yang berhubungan dengan bentuk. konfigurasi garis warna. atau garis dan warna yang memberikan kesan estetis. Desain Industri harus dapat diwujudkan dalam pola tiga atau dua dimensi serta bisa dipakai untuk menghasilkan suatu barang. komoditas industri atau kerajinan tangan. Desain Tata Letak Sirkuit Terpadu mengatur perlindungan yang berhubungan dengan semi konduktor. Rahasia Dagang merupakan perlindungan terhadap informasi yang tidak diketahui oleh umum di bidang teknologi dan/atau bisnis; informasi tersebut harus bernilai ekonomi, yang dapat digunakan dalam kegiatan usaha, serta kerahasiaannya dijaga oleh pemilik Rahasia Dagang. HaKI adalah sarana bagi para pengusaha untuk meningkatkan daya saing mereka. Fakta menunjukkan beberapa perusahaan yang menonjol di bidangnya berkat penggunaaan karya intelektual.
DAMPAK PROGRAM PENGENALAN AERODINAMIKA TERHADAP PEMAHAMAN SISWA SMK PENERBANGAN Eli Kumolosari; R. Nur Akhmad Triwibowo; Ndaru Atmi Purnam
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 6 (2024): Vol. 5 No. 6 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i6.37549

Abstract

Pemahaman tentang aerodinamika merupakan dasar teoritis yang krusial dalam studi penerbangan. Siswa perlu memahami prinsip-prinsip dasar seperti gaya angkat, hambatan, dan daya dorong yang berkaitan erat dengan aerodinamika untuk memahami bagaimana pesawat terbang dapat mengudara dan bergerak. Pemahaman aerodinamika juga sangat penting dalam proses desain dan konstruksi pesawat terbang. Mengingat pentingnya pemahaman tentang aerodinamika dalam konteks pendidikan penerbangan, pengabdian ini bertujuan untuk memberikan akses, pelatihan, dan pemahaman yang lebih baik kepada siswa SMK Penerbangan tentang prinsip-prinsip dasar aerodinamika. Hal ini diharapkan akan memberikan kontribusi yang signifikan dalam persiapan siswa untuk menghadapi tuntutan dunia industri penerbangan yang terus berkembang. Pengabdian dilaksanakan di SMK Penerbangan AAG Adisutjipto pada Selasa, 11 Juni 2024 dengan peserta 20 siswa. Hasil test menunjukkan peningkatan pemahaman peserta terhadap aerodinamika. Di sisi lain, hasil evaluasi menunjukkan kepuasan peserta terhadap kegiatan ini.
Failure probability of F-100 Pratt & Whitney-220E turbofan engine on F-16 fighting falcon aircraft Riski Riswandi Hanawa; Fajar Khanif Rahmawati; Elisabeth Anna Prattiwi; Maria Asumpta Deny Kusumaningrum; Eli Kumolosari
Vortex Vol 5, No 2 (2024)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v5i2.2251

Abstract

Engine failure is a condition where the engine operates outside normal conditions. One of the abnormal conditions that occurs can be caused by a fault that occurs in each engine module. Engine module is one of the components on an aircraft that functions for supports the aircraft to fly and controls all engine operations, wether on the ground and during flight. The problem can occur in each engine module at any time causing engine failure. Therefore, it is necessary to carry out further analysis to determine the cause of the failure that occurred, as well as to implement appropriate mitigation measures. The method used is the Fault Tree Analysis (FTA) method, which is a method for identifying risks that contribute to failure and determining failure probability. From the analysis using the qualitative fault tree analysis method 71 events were obtained with 35 basic events. Meanwhile, the quantitative analysis produces a cumulative probability failure of 0.747. The probability value has almost reached 1, therefore preventive maintenance has to be carried out to prevent functional failure.
English Language Training for Village Communities Affected by Yogyakarta International Airport Development Maria Asumpta Deny Kusumaningrum; Fajar Khanif Rahmawati; Eli Kumolosari
Joong-Ki : Jurnal Pengabdian Masyarakat Vol. 3 No. 3: Mei 2024
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/joongki.v3i3.3516

Abstract

It is hoped that the construction of the airport will have a real impact on the economy in the tourism, hotel, service industry and trade sectors for the surrounding community. The existence of the airport has an economic and social impact on the affected village which is the object of the training, namely Glagah Village in Temon District, Kulon Progo. To develop the economy, it is not only related to facilities and infrastructure, but also needs to be supported by human resources, one of whom is able to communicate using English. The English language skills of the village community around the airport are classified as being able to communicate but are still lacking based on the results of the pre-test given. There are still difficulties faced both in terms of listening English speech, understanding English reading, composing English sentences, and expressing ideas in speaking English. Thus, English language training is still needed to improve their quality. This community service activity is carried out in the form of training in the form of theoretical and practical exposure. The method used is Communicative Language Teaching (CLT). The activity took place 5 meetings with activity stages including warming up, core activities (speaking, writing, reading, and listening) and evaluation. Overall, it can be said that the activity was carried out well. It can be seen from the evaluation results distributed to training participants. All of them received a good response from the training participants. The participants' English language skills also increased based on the test results given to the participants.
Pengaruh Gurney Flap terhadap Turbulensi dengan Variasi Kecepatan Yoanita, Yulia Venti; Kurniawan, Dondi; Kumolosari, Eli; Pinindriya, Sinung Tirtha
JURNAL CRANKSHAFT Vol 8, No 1 (2025): Jurnal Crankshaft Vol.8 No.1 (2025)
Publisher : Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v8i1.13966

Abstract

Simulasi dan perancangan dilakukan untuk memberikan hasil yang terbaik dalam ajang perlombaan mobil Formula. Selain performa mesin, keamanan dari segi perancangan juga menjadi aspek penting untuk pengendara. Aspek penting yang sering menjadi perhatian dalam perancangan suatu bodi mobil Formula yaitu dari aspek aerodinamis kendaraan.  Simulasi dilakukan dengan menggunakan software Solidwrok student version.  Desain gurney flap ditandai dengan nilai down force bertambah minimal 10 N. Perubahan nilai down force kurang dari 10 N maka perlu dikaji ulang untuk desain gurney flap. Penambahan gurney flap dapat meningkatkan down force dengan cara menimbulkan turbulensi di belakang sayap. Pengoptimalkan desain sayap belakang agar menghasilkan gaya aerodinamika yang maksimal dengan jumlah turbulensi yang minimal.Efektifitas variasi penambahan gurney flap berupa yang terpasang pada rear wing dapat terlihat pada kelajuan yang tinggi yaitu diatas 90 m/s.
Analisis CFD Aliran Dua-Fasa Uap Air pada Pipa Geothermal Horisontal Kumolosari, Eli; Dinaryanto, Okto; Wibowo, Teguh; Setiabudi, Dedet Hermawan; Nugroho, Fajar; Pinandhita, Lazuardy Rahendra; Kurniawan, Freddy
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 17, No 1 (2025): Mei
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/angkasa.v17i1.2647

Abstract

Two-phase flow is a phenomenon that often found in various devices and fields, one of which is in the geothermal system. Two-phase flow parameters that are important to study include flow patterns, pressure drop, and water holdup. This study used the CFD method to obtain data on flow patterns, pressure drop, and water holdup in steam-water flow in horizontal pipes. Validation studies were conducted to obtain appropriate settings. The superficial velocities of steam and water were varied from 6-30 m/s and 0.05-0.1 m/s respectively. The results showed that the CFD results were in accordance with the experiments. Visually, the observed flow patterns were stratified-wavy flow and mist flow. Furthermore, the pressure drop and water holdup values obtained increased along with the increase in the JW value.
Numerical Simulation of Droplet Behavior under Varying Density Ratios Using Finite Volume-Front Tracking Method Kurniawan, Dondi; Yoanita, Yulia Venti; Pinindriya , Sinung Tirtha; Eli Kumolosari; Angga Darma Prabowo; M. Rangga Saputra
International Journal of Aviation Science and Engineering - AVIA Vol. 6 No. 2: (December, 2024)
Publisher : FTMD Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47355/avia.v6i2.137

Abstract

The study of droplet dynamics is very important to understand the mechanism of heat, mass, and momentum transfer in two phases. One approach to studying this phenomenon is through numerical simulation. The front tracking method is one of the techniques often used in numerical simulation of droplets to handle phase interactions in multiphase flows. This study aims to study the characteristics of droplets when they collide with surfaces with varying density values. The modeling used in this study is an interface diffusion approach using 2 types of fluids that have different properties. The domain used is Square Box-Staggered Grid. The software used is MATLAB R2024a. The results of the study indicate that the density ratio has a significant effect on the spreading factor, apex height, spreading velocity and pressure.
Effect of Gurney Flap on The Flow Separation Phenomenon on The Rear Wing Airfoil of Racing Car Kurniawan, Dondi; Yoanita, Yulia Venti; Pinindriya , Sinung Tirtha; Kumolosari, Eli; Prabowo, Angga Darma
Open Science and Technology Vol. 5 No. 1 (2025): Open Science and Technology
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/ost.vol5no1.2025.150

Abstract

Background: A racing car must be able to run at high speeds. To achieve this goal, vehicle aerodynamic modifications are often carried out, one of which is adding a gurney flap (GF). The GF on a racing car function to delay the flow separation, increase the downforce value, and reduce the drag force.Aims & Methods: In this study, observations of the influence of GF were carried out by numerical simulation using Solidworks 2025 by varying the speed of 250, 320, and 400 km/h at an angle of attack of 0°, with and without GF. The aim is to obtain information on the influence of these variations on the flow separation phenomenon on the rear wing airfoil.Result: The results showed that the addition of GF caused a delay in flow separation and a decrease in wake/vortex behind the airfoil. The impact was that the drag force increased at low speeds (39.97% at 250 km/h) but showed a decrease at medium and high speeds, namely -7.91% at 320 km/h and -2.31% at 400 km/h.
ANALISIS BERBASIS SIMULASI TERHADAP SIFAT AERODINAMIKA AIRFOIL NACA 2412 DENGAN PENAMBAHAN ELEMEN FLAP DAN SLAT Dinaryanto, Okto; Jalaali, Bahrul; Syahrizal; Subarjo, Abdul Haris; Setiabudi, Dedet Hermawan; Kumolosari, Eli
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 2 (2025): SJME Kinematika Desember 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i2.724

Abstract

The original concept for the Easy-Fly project was to create an ultra-light STOL (Short Takeoff and Landing) plane featuring minimal drag and speed attributes. To support this goal, CFD (Computational Fluid Dynamics) was applied by varying the configuration of single-grooved flaps and slats and the angle of attack on the NACA 2412 airfoil. The viscous model used in this case is Spalart-Allmaras. The variation of the angle of attack (α) was modified in the range of 0°-20°. For the flap model, the deflection angle was adjusted to 30° and 40°, and slats were added to the configuration. Based on the results of the study, it was found that flap deflections of 30° and 40° resulted in higher CL values ​​at an angle of attack of 0°. The use of flap and slat designs on the NACA 2412 airfoil effectively delayed airflow separation until it reached a maximum angle of attack of 24°. In addition to the high-lift system design on the NACA 2412 airfoil, changes in camber and effective chord line adjustments resulted in significant improvements in the lift coefficient (CL), drag coefficient (CD), and stall angle. Finally, a 30° flap deflection was more efficient than a 40° deflection in takeoff conditions. The average percentage increase in CL/CD from a 30° to a 40° flap was 17.61%.
Co-Authors Abdul Haris Subarjo Abdul Haris Subarjo abdul haris subarjo, abdul haris Angga Darma Prabowo Bahrul Jalaali Bahrul Jalaali Bahrul Jalaali Bambang Sudibyo Bayu Gilang Purnomo Dedet Hermawan Setiabudi Dedet Hermawan Setiabudi Dedet Hermawan Setiabudi, Dedet Hermawan Djarot Wahju Santoso Elisabeth Anna Prattiwi Fajar Nugroho FAJAR NUGROHO Fajar Nugroho Freddy Kurniawan Gunawan Gunawan Jalaali, Bahrul Kurniawan, Dondi Kutut Suryopratomo M. Rangga Saputra Maria Asumpta Deny Kusumaningrum Maria Asumpta deny Kusumaningrum Ndaru Atmi Purnam Okto Dinaryanto Pinandhita, Lazuardy Rahendra Pinindriya , Sinung Tirtha Pinindriya, Sinung Tirtha R. Nur Akhmad Triwibowo Rahmawati, Fajar Khanif Riski Riswandi Hanawa Sandi, Aris Sinung Tirtha Sri Mulyani Sudarmanto Sudarmanto Sudarmanto Sudarmanto Sudarmanto Sudarmanto, Sudarmanto Syahrizal Teguh Wibowo Triwibowo, Nur Ahmad Uyuunul Mauidzoh Yoanita, Yulia Venti Yulia Venti Yoanita