Ramadan, Muh. Akbar Enjang (2025) Analisa Kegagalan Actuator Locking Hydraulic Thrust Reverser Di Pesawat Boeing 737-800 NG Dengan Menggunakan Metode Fault Tree Analysis. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Thrust reverser merupakan salah satu sistem penting dalam pesawat terbang yang berfungsi membantu perlambatan pesawat saat mendarat. Untuk menjamin keamanannya, sistem ini dilengkapi dengan actuator locking hidrolik yang berfungsi mengunci posisi thrust reverser agar tidak terbuka secara tidak disengaja selama penerbangan. Namun, karena bekerja di bawah tekanan tinggi dan kondisi operasional yang ekstrem, komponen ini rentan mengalami kegagalan. Kegagalan pada actuator locking dapat menimbulkan konsekuensi serius, mulai dari gangguan operasional hingga potensi kecelakaan penerbangan. Penelitian ini bertujuan untuk menganalisis kegagalan pada actuator locking hidrolik thrust reverser dengan menggunakan metode Fault Tree Analysis (FTA). Melalui pendekatan ini, akar penyebab kegagalan diidentifikasi secara sistematis, dan probabilitas terjadinya kegagalan dihitung untuk menentukan tingkat risiko actuator. Selain itu, dilakukan pemetaan jalur kegagalan yang memungkinkan penyusunan langkah-langkah pencegahan yang efektif guna meningkatkan keandalan sistem. Hasil penelitian menunjukkan bahwa kegagalan pada actuator locking umumnya disebabkan oleh kerusakan segel hidrolik, keausan mekanis, serta kontaminasi fluida hidrolik. Dengan memperkirakan probabilitas kegagalan serta waktu rata-rata kegagalan, dapat disusun strategi pemeliharaan prediktif yang lebih tepat sasaran. Penelitian ini diharapkan dapat memberikan kontribusi dalam peningkatan keselamatan dan keandalan sistem hidrolik pada pesawat, khususnya dalam pengoperasian thrust reverser. ==================================================================================================================================
The thrust reverser is a critical aircraft system that aids in deceleration during landing. To ensure safety, the system is equipped with a hydraulic actuator locking mechanism that prevents uncommanded deployment during flight. However, due to its operation under high pressure and extreme conditions, this component is highly susceptible to failure. A malfunction in the actuator locking mechanism can lead to serious consequences, ranging from operational disruptions to potential aviation accidents. This study aims to analyze the failure of the hydraulic actuator locking mechanism in the thrust reverser system using the Fault Tree Analysis (FTA) method. Through this approach, the root causes of failure are systematically identified, and the probability of failure is calculated to assess the risk level of the component. Additionally, the failure paths are mapped to develop effective preventive measures to enhance system reliability. The results of this study indicate that failures in the actuator locking mechanism are primarily caused by hydraulic seal damage, mechanical wear, and hydraulic fluid contamination. By estimating the failure probability and mean time to failure, a more targeted predictive maintenance strategy can be formulated. This research is expected to contribute to improving the safety and reliability of aircraft hydraulic systems, particularly in the operation of thrust reversers.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Thrust reverser, actuator locking, sistem hidrolik, kegagalan, Fault Tree Analysis (FTA), keandalan, hydraulic system, failure, reliability |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General) T Technology > TJ Mechanical engineering and machinery > TJ840.A2+ hydraulic machinery T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL671.9 Airplanes--Maintenance and Repair |
| Divisions: | Faculty of Vocational > Mechanical Industrial Engineering (D4) |
| Depositing User: | Muh. Akbar Enjang Ramadan |
| Date Deposited: | 06 Aug 2025 03:57 |
| Last Modified: | 06 Aug 2025 03:57 |
| URI: | http://repository.its.ac.id/id/eprint/127721 |
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