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Vortex
Published by Institut Teknologi Dirgantara Adisutjipto
ISSN : 27216152     EISSN : 30217601     DOI : https://doi.org/10.28989/vortex
Core Subject : Science, Engineering,
Aerospace Engineering Earth & Planetary Sciences Energy Materials Science & Nanotechnology Mechanical Engineering
Vortex merupakan jurnal ilmiah dalam diang dirgantara dengan cakupan Perancangan Pesawat Terbang, Perawatan Pesawat Terbang, Operasi Penerbangan, Mesin Pesawat Terbang dan Elektronika Penerbangan
Arjuna Subject : Ilmu Material (semua kategori) - Logam dan Paduan Logam
Articles 5 Documents
 1 
Search results for , issue "Vol 6, No 1 (2025)" : 5 Documents clear
Pengaruh Mode Pembebanan Mekanika Retakan Terhadap Fatigue Crack Growth Rate Pada Struktur Doubler Fuselage Skin Pesawat Boeing 737-900ER Seran Luan, Randi Edward; Hartini, Dwi; Wibowo, Teguh; Prattiwi, Elisabeth Anna; Santoso, Djarot Wahju
Vortex Vol 6, No 1 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i1.2729

Abstract

Instalasi doubler dinyatakan aman di bawah Structural Repair Manual (SRM). Namun kemampuan menahan beban siklik tidak disebutkan secara eksplisit dalam SRM. Pembebanan siklik dapat menyebabkan kegagalan yang berhubungan dengan kelelahan. Penelitian ini didasarkan pada asumsi mekanika retak mode pembebanan II, dan analisis laju pertumbuhan retak dan siklus kelelahan dilakukan dengan menggunakan metode numerik MVCCI. Hasil penelitian menunjukkan bahwa nilai laju pertumbuhan retakan terendah adalah panjang retakan 8,5 mm pada kondisi terbang 5000 ft, yaitu 5,045×10-14 mm/siklus, dan nilai tertinggi adalah panjang retakan 51 mm. Pada kondisi penerbangan 40.000 kaki, ini akan menjadi 1,762×10-10 mm/siklus.
Analysis of the Increase in Payload Capacity of Airbus A320 Aircraft at Radin Inten II International Airport Lampung Using an Improved Climb Approach Lukito, Indro; Budiono, Cyrilus Sukaca; Prakoso, Agung; Poerwanto, Eko; Mardwianta, Benedictus
Vortex Vol 6, No 1 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i1.2802

Abstract

This study aims to analyze the increase in the payload capacity of the Airbus A320 at Radin Inten II International Airport Lampung using the Improve Climb approach. The Improve Climb approach focuses on optimizing the aircraft's climb path to enhance efficiency and payload capacity, particularly in airport conditions with high elevation and unfavorable weather. This study includes an analysis of the performance data of the Airbus A320. In addition, flight simulations were conducted taking into account factors such as wind speed, air temperature, and engine power. The results of this analysis are expected to provide recommendations regarding the optimization of flight schedules, passenger capacity, and improvements in operational efficiency at the airport. The results of the study indicate that by applying the Improve Climb approach, the aircraft's payload capacity can be increased by up to 3% without compromising safety. This opens up opportunities to increase the number of passengers.
Analysis Pneumatic System of The Causes of Engine Bleed Trip on Boeing 737-900 ER Aircraft Using the Fault Tree Analysis (FTA) Method Kurniawan, Muhammad Hadi; Adiputra, Bangga Dirgantara; Rahmawati, Fajar Khanif; Mulyani, Sri; Prattiwi, Elisabeth Anna
Vortex Vol 6, No 1 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i1.3105

Abstract

The Engine Bleed Air system is one of the primary systems in an aircraft and Its components include the Pressure Regulating Shutoff Valve (PRSOV), Bleed Air Regulator (BAR), High Stage Valve (HSV), High Stage Regulator (HSR), Precooler Control Valve (PCCV), and PCCV sensors 390 and 450. Any malfunction in these components can directly impact aircraft safety and flight operations. This research analyzes the performance failures of the system in regulating the temperature and pressure distributed by the bleed air system, particularly focusing on engine bleed trips. This study aims to determine the percentage of necessary component replacements in the air bleed engine system using the Fault Tree Analysis (FTA) method. Primary data is collected from aircraft maintenance databases and interviews. The percentage of main component replacements needed are: thermostat sensor 390 (42.3%), Precooler Control Valve (19.2%), Pressure Regulating Shutoff Valve (11.5%), and Bleed Air Regulator (7.7%). The remaining components account for the other percentages.
Design and Implementation of a Low-Cost Aircraft Orientation Angle Measurement System using MPU6050 Sensor for Avionics Education Jamil, Ramadani; Kurniawan, Freddy; Irawaty, Mardiana; Lasmadi, Lasmadi; Funny, Rindu Alriavindra
Vortex Vol 6, No 1 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i1.3585

Abstract

This study presents the design and implementation of a low-cost aircraft orientation angle measurement system using the MPU6050 sensor and Arduino Uno microcontroller for educational applications in avionics. The system aims to simulate aircraft attitude angles—yaw, pitch, and roll—by integrating an inertial sensor module (MPU6050) with open-source hardware and software. The Arduino IDE was employed to acquire and process sensor data, while the Processing 3 environment was used to visualize the attitude motion in real time. The prototype was assembled and tested to evaluate its performance in detecting orientation changes across three axes. Experimental results demonstrate that the MPU6050-based system can accurately capture and display attitude variations without communication delay or signal error, providing a clear visualization of aircraft motion. The system’s simplicity, affordability, and open-source framework make it suitable for classroom demonstrations and laboratory exercises in avionics and control-system courses. Future improvements include the integration of Euler-angle computation and wireless communication to enhance mobility and data acquisition.
GPS Signal Performance Testing Based on Material Variations Of Portable On-Demand (POD) And GPS Placement For Aerial Photography Missions Kehi, De Richi; Hartini, Dwi; Mardwianta, Benedictus; Prattiwi, Elisabeth Anna; Santoso, Djarot Wahju
Vortex Vol 6, No 1 (2025)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v6i1.3118

Abstract

In aerial photography, the use of camera systems integrated with GPS signals is crucial for determining the position and velocity of an aircraft or drone. The Portable On-Demand (POD) serves as a payload container for equipment such as cameras, and the POD material can influence GPS signal quality. This study aims to evaluate the quality of received GPS signals and to assess the effect of camera distance on GPS performance. Experimental tests were conducted using three POD material types (original, E-glass, and carbon) and two GPS systems (Emlid Reach and Pixhawk). The results indicate that the E-glass POD provides the best performance, achieving signal-to-noise ratio (SNR) values above 45 dB and a PDOP value of 1.7. Additionally, the E-glass POD detected up to 34 satellites at a camera distance of 0 cm. In contrast, the original and carbon PODs exhibited inferior performance, including occurrences of a “No Solution” status. Therefore, the E-glass POD is more reliable in maintaining GPS signal quality and positioning accuracy for aerial photography missions.

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