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All Journal Jurnal Ilmu Dasar Computational and Experimental Research in Materials and Renewable Energy (CERiMRE) Jurnal Polimesin Indonesian Journal of Aerospace
Ula, Nur Mufidatul
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Aerospace Engineering Astronomy Automotive Engineering Computer Science & IT Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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Analysis of Vibration in Payload Room Due to Engine Vibration on LSU-05 NG Wijaya, Yusuf Giri; Ula, Nur Mufidatul; Muksin, M.; Pratama, Mukhael Gilang Pribadi Putra
Computational And Experimental Research In Materials And Renewable Energy Vol 4 No 1 (2021): May
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/cerimre.v4i1.24963

Abstract

LSU-05 NG is one of the unmanned air vehicles (UAV) developed by the aviation technology center LAPAN. The LAPAN aviation technology center designed the LSU-05 NG to be able to carry a larger payload and broader range than other types of LSUs. Therefore, the LSU-05 NG uses an engine that has enough power. LSU-05 NG uses a piston-type engine with a capacity of 170 CC. UAV engine is the primary source of vibration in the UAV structure. Excessive vibration can cause damage to the UAV structure and malfunction of the UAV payload, such as sensors, control systems, and cameras. In this research, vibration measurements were carried out at 2 locations. The measurement location is on the engine and where the payload is installed. The vibration measurement on the LSU-05 NG was carried out during the ground test. The accelerometer sensor is used to measure vibrations and is connected to the NI data acquisition system and displayed with LabVIEW. The data to be taken are acceleration and frequency data with variations in the RPM value on the LSU-05 NG engine. With these measurements, the vibration characteristics caused by the engine in the LSU-05 NG structure, primarily where the payload is stored, can be known.
Vibration Test Fixtures Design for Payload of Tubular Telemetry System Muksin, Muksin; Pratama, Mikhael Gilang Pribadi P.; Nugroho, Yudha Agung; Wijaya, Yusuf Giri; Ula, Nur Mufidatul; Wirawan, Adi
Jurnal ILMU DASAR Vol 23 No 1 (2022)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v23i1.23894

Abstract

Vibration testing on telemetry system payload is needed to determine its resistance to vibration during operation. Vibration testing of telemetry system payloads requires a test fixture. Test fixture is used to transmit vibration from shaker to telemetry system payload. The payload of telemetry system to be tested is a tubular. The test fixture in this study was designed using SolidWorks software. The material used for manufacture of test fixture is aluminum. Aluminum material was chosen because it has good rigidity with a relatively light mass. Stiffness and mass properties affect to natural frequency value of test fixture, which must be greater than the frequency range of operating telemetry system. Data collection uses two accelerometers placed on test fixture. Sine sweep vibrations are given from 5 Hz to 2000 Hz with a constant amplitude of 1 g and a sweep rate of 1 octave/minute. The test produces three peaks that they are candidates as natural frequencies, i.e at a frequency of 1532 Hz with an amplitude of 2.898 g, a frequency of 1706 Hz with an amplitude of 6.582 g, and at a frequency of 1806 Hz with an amplitude of 6.472 g. From those three natural frequencies, the second natural frequency at 1706 Hz is the most critically because it has the largest response value.
Shear strength comparison of single lap and joggle lap adhesive joints in carbon fiber composites manufactured via vacuum-assisted resin infusion Pratama, Mikhael Gilang Pribadi Putra; Abdurohman, Kosim; Pratomo, Rezky Agung; Hidayat, Ryan; Ramadhan, Redha Akbar; Aritonang, Rian Suari; Nurtiasto, Taufiq Satrio; Ardiansyah, Riki; Nugroho, Afid; Nuranto, Awang Rahmadi; Wandono, Fajar Ari; Targani, Dudi; Ula, Nur Mufidatul
Jurnal Polimesin Vol 22, No 5 (2024): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i5.5437

Abstract

The extensive utilization of composite materials has spurred the advancement of diverse joining techniques suitable for components constructed from such materials. This study focuses on the examination of two specific types of joints: single lap and joggle lap joints. The specimens utilized were composed of unidirectional carbon fiber composite combined with vinyl ester resin, manufactured via the vacuum-assisted resin infusion method. Vinyl ester adhesives were employed in the bonding process, with the joint surfaces undergoing sanding treatment prior to testing. Mechanical testing was conducted on the specimens according to ASTM D5868 standard, employing a constant crosshead speed until failure occurred. The test results reveal that the shear strength of single lap joints surpasses that of joggle lap joints. Within the single lap joint configuration, a mixed failure mode comprising both adhesive and cohesive failure is observed. Conversely, in joggle lap joints, substrate delamination is prevalent, suggesting the predominance of peel stress during loading.
ANALISIS PENENTUAN POWER LOADING PADA DESAIN AWAL PESAWAT TERBANG TANPA AWAK LSU-05 NG Atmasari, Novita; Jayanti, Eries Bagita; Ula, Nur Mufidatul; Ramadiansyah, M. Luthfi; Ramadhan , Redha Akbar; Suseno, Prasetyo Ardi Probo; Rizaldi, Ardian; Hidayat, Kurnia; Septiyana , Angga
Indonesian Journal of Aerospace Vol. 17 No. 2 Desember (2019): Jurnal Teknologi Dirgantara
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2019.v17.a3162

Abstract

Penelitian ini berfokus pada analisa penentuan power loading pada awal desain pesawat LSU-05 NG. Dengan menentukan power loading maka kebutuhan daya engine untuk pesawat LSU-05 NG dapat diestimasi. Artinya pemilihan engine dapat dilakukan sehingga menghasilkan gaya dorong agar pesawat dapat melakukan misi pemantauan dan foto udara dengan baik. Metode yang digunakan untuk analisa penentuan power loading adalah teknik Matching Chart atau Matching Plot dengan memilih titik optimal dari lima konstrain yaitu jarak take-off, climb rate, stall speed, cruise speed, dan landing. Hasil penelitian menunjukkan bahwa dengan massa 85 kg dan luas sayap 3,22 m2 pesawat LSU-05 NG membutuhkan daya 9.7 hp. Penjelasan lebih detail akan dijabarkan pada bagian selanjutnya.
Design and experimental Verification of Vibration Testing Fixture for Flight Control Panel Wijaya, Yusuf Giri; Ula, Nur Mufidatul; P.P., Mikhael Gilang Pribadi; Muksin, Muksin; Syah, Agus Harno Nurdin
Indonesian Journal of Aerospace Vol. 19 No. 2 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2021.v19.a3701

Abstract

In this research, experimental design and testing of the vibration test fixture were carried out. The designed vibration test fixture is used to test the FCP, which is one of the components of avionics in aircraft. FCP vibration testing is carried out using the DO-160 test standard. The test has a test frequency range from 5 to 500 Hz. Therefore, the vibration test fixture must have a natural frequency above 600 Hz. The vibration test fixture is designed using a T-type model with modifications to get optimal results. The raw material used to make the test fixture is aluminum. The test fixture has a natural frequency value above 500 Hz, and both were tested using FEM simulation and experimental tests. Therefore, the vibration test fixture that is made meets the requirements for vibration testing on FCP. The difference in the natural frequency value from the FEM simulation and experimental test results on the vibration test fixture is 14.61% on the Z-axis, 10.61% on the X-axis, and 9.74 on the Y-axis.
Investigation of the Mechanical Properties of Vinyl ester Carbon Composites Through Immersion in Seawater and Freshwater Using the VARI (Vacuum Assisted Resin Infusion) Method Muzayadah, Nurul Lailatul; Nurtiasto, Taufiq Satrio; Abdurrahman, Kosim; Nugroho, Afid; Wandono, Fajar Ari; Ula, Nur Mufidatul; P, Rezky Agung; Ramadhan , Redha Akbar; Hendrawan, Rozi
Indonesian Journal of Aerospace Vol. 20 No. 1 (2022): Jurnal Teknologi Dirgantara
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jtd.2022.v20.a3579

Abstract

The carbon-vinyl ester composites have made for the development of the base material for Amphibious floats. The properties of this composite have strength, lighter weight and resistant to corrosion. This study was aimed to report the effect of two different water immersion treatment namely seawater and freshwater on the mechanical properties of composite made from fiber twill and vinyl ester resin using the vacuum assisted resin infusion (VARI) method. Experiments were carried out on tensile, compressive, and shear tests. The specimens were immersed in seawater and freshwater for ten days. The results have shown that Ultimate Tensile Strength of the composite with seawater immersion declined 1.27% compare with the composite without immersion treatment, while the composite in freshwater got greater 3.56%. The decrement of compressive and shear strength was more significant than tensile strength. The compressive strength declined 17.89% and 16.7% for freshwater and seawater treatment, respectively. The shear strength decreased 27.87 % and 25.77% for freshwater and seawater treatment, respectively
Co-Authors Abdurohman, Kosim Abdurrahman, Kosim Adi Wirawan Aritonang, Rian Suari Atmasari, Novita Hendrawan, Rozi Hidayat, Kurnia Hidayat, Ryan Jayanti, Eries Bagita Muksin, M. Muzayadah, Nurul Lailatul Nugroho, Afid Nugroho, Yudha Agung Nuranto, Awang Rahmadi Nurtiasto, Taufiq Satrio P, Rezky Agung P.P., Mikhael Gilang Pribadi Pratama, Mikhael Gilang Pribadi P. Pratama, Mikhael Gilang Pribadi Putra Pratama, Mukhael Gilang Pribadi Putra Pratomo, Rezky Agung Ramadhan , Redha Akbar Ramadhan, Redha Akbar Ramadiansyah, M. Luthfi Riki Ardiansyah, Riki Rizaldi, Ardian Septiyana , Angga Suseno, Prasetyo Ardi Probo Syah, Agus Harno Nurdin Targani, Dudi Wandono, Fajar Ari Wijaya, Yusuf Giri