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Muhammad Hadi Widanto
Universitas Dirgantara Marsekal Suryadarma
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Social Sciences Transportation Other

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MENINGKATKAN PELUANG KERJA LULUSAN SMK MELALUI PELATIHAN UAV UNTUK MENYELARASKAN DENGAN KEBUTUHAN INDUSTRI Martina, Ayu; Widanto, Muhammad Hadi; Rosadi, Imron
An-Nizam Vol 4 No 2 (2025): An Nizam: Jurnal Bakti Bagi Bangsa
Publisher : Universitas Islam 45 Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/an-nizam.v4i2.11542

Abstract

The high unemployment rate among vocational high school graduates, particularly in the aviation sector, indicates a significant gap between students’ competencies and industry needs. This condition highlights the urgency of technology-based training to enhance graduates’ competitiveness, especially in the Industry 4.0 era marked by the rapid development of Unmanned Aerial Vehicle (UAV) technology. This community service program was carried out at SMK Gutama Jakarta, selected as a strategic partner due to its lack of prior UAV learning experience yet strong commitment to improving student competencies. The main objective of this program was to provide practical skills in UAV construction, understanding the principles of UAV electrical systems, introducing UAV simulators as interactive learning media, and developing knowledge of UAV supporting systems. The program was implemented through several stages, including socialization, UAV construction practices, electrical system training, simulator usage, and flight testing. The results showed a significant increase in students’ knowledge, with pre-test and post-test scores improving by 35.7%, along with enhanced technical skills in assembling and operating UAVs. Furthermore, evaluation questionnaires indicated a high level of student satisfaction, particularly in the hands-on training component. In conclusion, UAV training successfully improved the attitudes, knowledge, and skills of SMK Gutama students, preparing them to better enter the industrial workforce. Therefore, similar programs should be carried out continuously with school support to establish an independent vocational learning model aligned with industry needs.
Numerical Analysis and Taguchi Optimization of Bird Strike Resistance on Helicopter Engine Cowling Using Lattice Structure Warsiyanto, Budi Aji; Widanto, Muhammad Hadi; Sari, Rafika Arum; Rizki, Alfan; Putera, Rizky Akmal
Eduvest - Journal of Universal Studies Vol. 5 No. 8 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i8.52086

Abstract

Bird strikes pose a major risk to the safe operation of aircraft. This study evaluates a sandwich structure design with a lattice material as a helicopter engine protection device. Advances in additive manufacturing have enabled the advancement and fabrication of architected cellular materials. The lattice structures were assessed computationally through nonlinear dynamic finite element method, considering variations in topology, materials, and relative density. The Taguchi approach was used to establish the ideal lattice structure by maximizing specific energy absorption (SEA). The results showed that a body-centered cubic Z (BCCZ) lattice structure using Ti-6Al-4V material and 30% relative density performed the best at absorbing impact energy. Additionally, the sandwich structure that uses BCCZ lattice, effectively protected the engine cowling under the operational speed of a helicopter. The findings indicate that the BCCZ lattice core enhances the impact resistance of composite materials by minimizing structural deformation. Moreover, a quasi-isotropic layup combined with a lattice material sandwich plate provides superior impact resistance, deformation control, and damage mitigation compared to other sandwich designs.
Analisis Kerusakan Pelat Komposit Akibat Beban Low Velocity Impact Terhadap Variasi Energi Impak Dengan Menggunakan Elemet Split Widanto, Muhammad Hadi; Amat Chaeroni; Surya, Eggy
Jurnal Teknologi Kedirgantaraan Vol 9 No 1 (2024): Jurnal Teknologi Kedirgantaraan
Publisher : FTK UNSURYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35894/jtk.v9i1.103

Abstract

Komposit merupakan material yang paling banyak digunakan pada struktur pesawat terbang. Hal ini karena material komposit memiliki kekuatan struktur yang tinggi dan berat yang ringan. Namun komposit mempunyai kelemahan yaitu tidak tahan terhadap beban impak karena sifatnya yang getas. Beban impak dapat terjadi akibat human error pada saat dilakukan perawatan akibat benda jatuh atau karena tumbukan benda asing lainnya. Pada penelitian ini dilakukan simulasi impak struktur komposit untuk mengetahui ketahan komposit dengan variasi energi impak. Pada simulasi impak menggunakan metode elemen hingga dengan memodelkan intralaminar dan interlaminar menggunakan metode kegagalan hashin dan cohesive zone model. Penelitian terhadap pengaruh element split yang dimodelkan pada pelat komposit menjadi penelitian utama. Dari hasil menunjukkan pengaruh element split terhadap respon dinamik dan kerusakan delaminasi dapat memberikan hasil dengan korelasi yang lebih baik terhadap hasil eksperimen.
Optimization of Powered Landing Control for Reusable Rockets Using Softmax DDGN Rafika Arum Sari; Muhammad Hadi Widanto; Imron Rosadi
Indonesian Journal of Aerospace Vol. 22 No. 2 (2024): Indonesian Journal Of Aerospace
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research presented a novel approach to optimize powered landing control on reusable rockets by using Softmax Double Deep Q-Networks (DDQN). We combined the advantages of Double DQN with Softmax exploration and curriculum learning to achieve precise and efficient landing control. Through extensive experiments in a specially developed 2D simulation environment, our method achieves improved landing accuracy by 37% (reduced final position error from 2.4 m to 1.5 m), better fuel efficiency by 28% (reduced average fuel consumption from 850 kg to 612 kg per landing), and improved adaptability to initial conditions (improved successful landing rate from 76% to 94% across a wide range of altitudes and initial orientations) compared to traditional PID control methods. The results showed that the curriculum learning method significantly outperformed the non-curriculum approach, achieving 27% higher average awards (11.97 vs. 8.61) and 60% better performance consistency as measured by standard deviation (0.92 vs. 2.29). Both Softmax and ε-greedy exploration strategies proved effective with curriculum learning, with ε-greedy DDQN achieving the highest average award of 11.97. This approach allows for higher precision rocket landings while reducing operational costs through.
The Effect of Cross-section and Elliptical Hole Ratio on Crashworthiness Parameters of Crash-Box Structure Warsiyanto, Budi Aji; Widanto, Muhammad Hadi; Musthofa, Ilham; Maulana, Ichsan; Sitompul, Sahril Afandi; Yuniarti, Endah
Indonesian Journal of Aerospace Vol. 19 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3408

Abstract

The thin-walled column structure or crash-box with metal material and consisting of multi-cell were found to be much more efficient in energy absorption than single-cell under axial impact loads. In this study, a numerical analysis was performed using the Abaqus finite element method for the cross-section differences in thin-walled column structures. The cross-section differences are compared to get a configuration that complies with the indicator parameters using the complex proportional assessment (COPRAS) method. The chosen cross-section configuration is further enhanced by creating elliptical holes with different diameter ratios. The results show that the thin-walled column structure with nine-cell cross-section accompanied by an elliptical hole ratio of 0.3 indicates the potential corresponding to the indicator parameters for the crashworthiness application.
Dynamic response of the wing during UAV collision Warsiyanto, Budi Aji; Widanto, Muhammad Hadi; Musthofa, Ilham; Maulana, Ichsan
Indonesian Journal of Aerospace Vol. 19 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3514

Abstract

An airborne collision between civil Unmanned Aerial Vehicles (UAVs) and manned aircraft is a potential threat to aircraft operation safety. In this paper, the UAV collision test was performed on a commuter aircraft wing section to investigate the dynamic response of this primary operation component. The projectile was a 735 g drone named ‘Mavic’. Explicit dynamic code ABAQUS was employed to simulate the collision process based on the difference of collision scenarios to assess the hazard. The results showed that 735 g drone impact at the aircraft maximum approach flap and cruising speed could cause some damage on the wing front spar and the situation is more serious than 910 g bird strike in which the hardness of drone components rather than kinetic energy is a decisive factor. The lithium-ion battery penetrated the airframe which may be a potential source of ignition.
Co-Authors amat chaeroni Aswan Tajuddin Ayu Martina Budi Aji Warsiyanto Endah Yuniarti, Endah Fairuza, Syarifah Freddy, Franciscus Husaini, Fahdli Zulfikar Imron Rosadi Imron Rosadi Maulana, Ichsan muftiarifin Muhamad Jayadi muhammad fadli Musthofa, Ilham nugraha, sultan NUR HIDAYAH NINGSIH, Nur Hidayah Ningsih Putera, Rizky Akmal Rabeta, Bismil Rafika Arum Sari Rini Wulandari Riskha Agustianingsih Rizki Fitriansyah Rizki, Alfan Sahril Afandi S Sari, Rafika Arum Sitompul, Sahril Afandi Sultan Nugraha A Surya, Eggy