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Station-Keeping Simulation and Planning for LAPAN-A4 Satellite Using Finite-Burn Thruster Muhammad Rizki Zuhri
Jurnal Teknologi Dirgantara Vol 19, No 1 (2021)
Publisher : National Institute of Aeronautics and Space - LAPAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3474

To be a Sun-synchronous orbit (SSO), the orbit must have a certain value of nodal precession rate, which equals to 360°/year. However, the value of nodal precession rate is usually drifted by orbit perturbations, mainly by the oblateness of the Earth and atmospheric drag, to be no longer 360°/year as expected for SSO. Thus, the local time of the satellite will change too, so it needs to be corrected by some correction maneuvers. In this research, the authors studied about station-keeping planning for SSO satellite via inclination correction maneuver by simulation using GMAT, a software developed by NASA, with a finite-burn propulsion approach. In this research, LAPAN-A4 satellite is chosen to be the satellite that will be simulated. Some alternative plans of inclination correction maneuver based on maneuvering periods are chosen, they are maneuver for every 2 months, 4 months, 6 months, 12 months, and 24 months. The simulation results show that the optimal station keeping planning is the maneuver for every 2 months. This alternative gives the lowest fuel consumption so that the fuel and launch cost will be minimum, and the local time drift that is still may be tolerated.

Autonomous Quadcopter Image Processing for Simulated Search and Rescue Flights Budi Hartono; Muhammad Rizki Zuhri; Citra Asti Rosalia; Nofrijal Fauzan
METAL: Jurnal Sistem Mekanik dan Termal Vol 7, No 2 (2023): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.7.2.8-17.2023

In Search and Rescue (SAR) operations, a designated search area is explored with aircraft and helicopters. After target identification, the flying vehicle continues landing and rescue procedures. This research uses a quadcopter to replicate a SAR flight simulation. Autonomous quadcopter operation includes takeoff and navigation between waypoints determined by Mission Planner software. On the way to the second waypoint, a camera-based image processing system scans the ground surface. If the marker is detected by the image processing system, the Raspberry Pi program will instruct control commands to the Pixhawk flight controller to ensure the quadcopter lands directly on the recognized marker. In the case when the quadcopter reaches the second waypoint but the system fails to identify the marker, the Mission Planner commands the quadcopter to autonomously return to the starting point and land automatically at the take-off location. An interesting aspect of this research concerns the application of a low-cost image processing system to ensure the quadcopter flies at a constant flight altitude above the ground surface, so that the quadcopter can perform simulated SAR flight missions and accurately identify landmarks. Research parameters include marker diameter, flight altitude, and quadcopter speed. The results show successful marker detection at a flying altitude of up to 3 meters above the ground and reaching a top speed of 3 m/s at a flying altitude of 2 meters.

Analisis Kestabilan Statik Longitudinal dan Lateral-Direksional pada Pesawat Cessna 172N Skyhawk PK-SDQ dengan Menggunakan Aplikasi DATCOM Muhammad Daffa Hauzaan; Muhammad Rizki Zuhri
Prosiding Industrial Research Workshop and National Seminar Vol. 15 No. 1 (2024): Prosiding 15th Industrial Research Workshop and National Seminar (IRWNS)
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v15i1.6224

Politeknik Negeri Bandung memiliki fasilitas unggulan berupa pesawat Cessna 172N Skyhawk. Fasilitas ini memberikan kesempatan bagi mahasiswa untuk memahami pesawat secara mendalam. Namun, data kestabilan statik longitudinal dan lateral-direksional dari pesawat ini belum tersedia. Hal ini menjadi kendala untuk pemahaman yang lebih mendalam terhadap pesawat tersebut. Penelitian ini akan menganalisa kestabilan statik pesawat Cessna 172N Skyhawk PK-SDQ matra longitudinal dan lateral-direksional. Parameter aerodinamika yang diperlukan untuk analisis diperoleh melalui perangkat lunak Digital DATCOM. Digital DATCOM dapat digunakan untuk mendapatkan koefisien aerodinamika pesawat secara keseluruhan atau bagian-bagian tertentu. Dari hasil analisis matra longitudinal dan lateral-direksional, pesawat Cessna 172N Skyhawk PK-SDQ memenuhi syarat stabilitas statik matra longitudinal, namun, tidak memenuhi syarat stabilitas statik matra Lateral-direksional. Hal ini disimpulkan dari nilai yang negatif serta nilai , positif dan dengan nilai negatif. Masing-masing nilai tersebut memenuhi kriteria kestabilan statik longitudinal. Pada matra lateral-direksional pesawat tidak memenuhi kriteria kestabilan statik. Nilai , , , dan memenuhi kriteria kestabilan statik, namun nilai yang negatif menunjukkan ketidakstabilan pesawat matra lateral-direksional. kriteria yang seharusnya terpenuhi, nilai yang didapatkan menunjukkan hasil negatif maka pesawat tidak memenuhi kestabilan statik matra lateral-direksional.

Linear and Nonlinear Simulation for Quadrotor Dynamics Encompassing Induced Disturbance Rizki Zuhri, Muhammad; Sidqi Islami, Zaim; Asti Rosalia, Citra
Jurnal Jaring SainTek Vol. 6 No. 1 (2024): April 2024
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/mtj88e71

Quadrotor is a rotorcraft that has four rotors, usually symmetrical and arranged in some specific configuration, i.e. ‘plus’ and ‘cross’ configuration. To test a new control system for quadrotor, it is necessary to put it on board first and have a flight test. However, controlling a quadrotor is a hard task, hence the risk of crash is high. This risk can be reduced by creating a simulation model that represents the dynamics of quadrotor accurately. This paper aims to provide the simulation model of a quadrotor. To increase accuracy of this model, the disturbance induced by the motion of the quadrotor were also taken int account. The simulation was built in Simulink based on the kinematics and dynamics equation of quadrotor both in linear and nonlinear simulation. In most cases, the attitude response (roll, pitch, and yaw) for both simulations were nearly the same. The most notable difference was for the elevation response in which the linear simulation tended to be unable to capture the deviation, while the nonlinear simulation was able to.

PENGEMBANGAN KENDALI TERBANG BERBASIS SLIDING MODE CONTROL DENGAN ELIMINASI CHATTERING PADA QUADROTOR UNTUK MENGATASI GANGGUAN ANGIN TAK TENTU DI KAWASAN JAWA BARAT Zuhri, Muhammad Rizki; Wibowo, Singgih Satrio; Soetanto, Maria Fransisca
Jurnal Teknologi Terapan Vol 10, No 2 (2024): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v10i2.677

Quadrotors are intrinsically unstable. If there is a sudden wind disturbance, this wind disturbance will be amplified so that the quadrotor's attitude becomes uncontrollable. West Java is one of the regions in Indonesia that has quite high wind disturbances. The recorded daily wind disturbance reached 6.99 m/s with a maximum value of 9.95 m/s. In this research, a control system based on the sliding mode control (SMC) algorithm is used. The advantage of this control algorithm is its ability to compensate for uncertain disturbances. This research investigates the implementation of the SMC control into a quadrotor by incorporating random wind disturbance aspects into the model. The research was carried out numerically with simulations using MATLAB/Simulink, with the position variables being the main focus. Quadrotor equipped with SMC has a lower mean error value for the desired position relative to the real position. This shows that the SMC control algorithm that has been created is able to properly overcome random wind disturbances that occur in the West Java area.

Mewujudkan Pemberdayaan Masyarakat Melalui Pelatihan Perawatan Pesawat Udara Khususnya Mesin Turbin Gas Bagi Guru-Guru SMKN 12 Bandung Iryani, Lenny; Fransisca Soetanto, Maria; Hidayat, Syarif; Luthfi, Mochammad; Hartono, Budi; Suradi Kartanegara, Radi; Wibowo, Teguh; Sinung Nugroho, Yohanes; Rizki Zuhri, Muhammad; Asti Rosalia, Citra; Sidqi Islami, Zaim
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 5 : Juni (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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

This program is aimed for teachers from SMK N 12 Bandung. Through this PKM (Community Service Program), it is expected that the training participants will gain insights and enhanced knowledge regarding aircraft maintenance, particularly the maintenance of gas turbine engines. The training was conducted at the Propulsion Laboratory, Aeronautical Engineering Hangar, Department of Mechanical Engineering, from October 12 to 16, 2021. The aircraft engine maintenance training began with a pre-test to assess participants' initial knowledge of aircraft engine maintenance. At the end of the training, a post-test was conducted to measure the improvement in their understanding and knowledge. The outcome of this PKM activity is a certificate of participation in the aircraft maintenance training, specifically focused on gas turbine engines.

Comparison of PID and Fuzzy Logic Controller Performance on Linear and Nonlinear Dynamics of a Quadrotor Zuhri, Muhammad Rizki
Faktor Exacta Vol 18, No 1 (2025)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/faktorexacta.v18i1.26091

Penerapan Insinerator Sampah Sederhana dalam Mengatasi Masalah Penumpukan Sampah di Desa Sariwangi Defrianto Pratama; Rahmawati Hasanah; Yunita Citra Dewi; Destri Muliastri; Devi Eka Septiyani Arifin; Muhammad Rizki Zuhri; Zainuddin Zainuddin; Ajeng Ayu Milanti; Sri Widarti
ABDIMAS TERAPAN : Jurnal Pengabdian Kepada Masyarakat Terapan Vol. 3 No. 1 (2025): Juni: ABDIMAS TERAPAN: Jurnal Pengabdian Kepada Masyarakat Terapan
Publisher : Politeknik Kampar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59061/abdimasterapan.v3i1.998

Waste management is a major issue in Sariwangi Village, West Bandung Regency, due to the lack of public knowledge, skills, and awareness regarding technology-based waste processing. This problem is exacerbated by inadequate equipment and low community participation. To address these challenges, an incineration method was introduced through a community service program involving problem identification, literature review, awareness campaigns, waste separation, provision of equipment, and training on the use of waste processing technology. The program also developed strategies to enhance community involvement in waste management. The expected outcomes include improved knowledge and skills, availability of proper equipment, and increased awareness and participation in maintaining environmental cleanliness. This approach aims to create a cleaner, healthier, and more sustainable village environment. Keywords: Waste management; Incineration technology; Incinerator

Autonomous Quadcopter Image Processing for Simulated Search and Rescue Flights Hartono, Budi; Zuhri, Muhammad Rizki; Rosalia, Citra Asti; Fauzan, Nofrijal
METAL: Jurnal Sistem Mekanik dan Termal Vol. 7 No. 2 (2023): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.7.2.8-17.2023

In Search and Rescue (SAR) operations, a designated search area is explored with aircraft and helicopters. After target identification, the flying vehicle continues landing and rescue procedures. This research uses a quadcopter to replicate a SAR flight simulation. Autonomous quadcopter operation includes takeoff and navigation between waypoints determined by Mission Planner software. On the way to the second waypoint, a camera-based image processing system scans the ground surface. If the marker is detected by the image processing system, the Raspberry Pi program will instruct control commands to the Pixhawk flight controller to ensure the quadcopter lands directly on the recognized marker. In the case when the quadcopter reaches the second waypoint but the system fails to identify the marker, the Mission Planner commands the quadcopter to autonomously return to the starting point and land automatically at the take-off location. An interesting aspect of this research concerns the application of a low-cost image processing system to ensure the quadcopter flies at a constant flight altitude above the ground surface, so that the quadcopter can perform simulated SAR flight missions and accurately identify landmarks. Research parameters include marker diameter, flight altitude, and quadcopter speed. The results show successful marker detection at a flying altitude of up to 3 meters above the ground and reaching a top speed of 3 m/s at a flying altitude of 2 meters.

Rancang Bangun Sistem Pompa dan Pipa pada Turbin Angin Savonius Dua Tingkat Sebagai Sistem Pengaliran Air Rhamadhan, Firman; Soetanto, Maria Fransisca; Zuhri, Muhammad Rizki
Prosiding Industrial Research Workshop and National Seminar Vol. 16 No. 1 (2025): Vol. 16 No. 1 (2025): Prosiding 16th Industrial Research Workshop and National
Publisher : Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/irwns.v16i1.6660

Pada penelitian ini, dirancang dan dibangun sistem pompa dan jaringan pipa yang digerakkan oleh turbin angin vertikal tipe Savonius dua tingkat. Sistem ini ditujukan sebagai solusi alternatif pengaliran air untuk masyarakat di daerah yang sulit dijangkau oleh sumber air bersih. Prinsip kerja alat ini adalah memanfaatkan gaya hambat (drag) dari hembusan angin yang ditangkap oleh bilah turbin, kemudian energi rotasi yang dihasilkan ditransmisikan ke poros penggerak untuk mengoperasikan sistem pompa. Pompa yang digunakan bekerja berdasarkan prinsip gerak bolak-balik (reciprocating/piston) yang menciptakan perbedaan tekanan antara sisi masuk (inlet) dan sisi keluar (outlet), sehingga mampu memindahkan fluida dari satu tempat ke tempat lain. Dalam proses pengujian, dilakukan perbandingan terhadap tiga jenis konfigurasi instalasi pipa guna mengetahui sistem mana yang memberikan debit aliran paling optimal. Hasil pengujian menunjukkan bahwa semua konfigurasi sistem pemipaan mampu menghasilkan efisiensi yang sangat tinggi, dengan nilai maksimum mencapai 99,92% pada semua bentuk sistem pemipaan. Efisiensi minimum bervariasi pada tiap konfigurasi, yaitu 99,77% pada bentuk 1, 99,62% pada bentuk 2, dan 99,69% pada bentuk 3.

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