ANALISIS PENYEBAB TERJADINYA KENAIKAN INTERTURBINE TEMPERATURE (ITT) ENGINE PT6A-114A PADA PESAWAT CESSNA GRAND CARAVAN C208B DENGAN MENGUNAKAN METODE FAULT TREE ANALYSIS

YOHANES PATI LAU, DINO (2018) ANALISIS PENYEBAB TERJADINYA KENAIKAN INTERTURBINE TEMPERATURE (ITT) ENGINE PT6A-114A PADA PESAWAT CESSNA GRAND CARAVAN C208B DENGAN MENGUNAKAN METODE FAULT TREE ANALYSIS. Skripsi thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Temperature of Interturbine is the engine temperature between compressor turbine and power turbine. The temperature is monitored on the aircraft instrument board. Temperature of Interturbine has increased beyond the normal operating limits of the engine, indicates damage to the engine part. Therefore, further analysis is needed to determine the cause of the failure or damage to the engine components that are related. The method applied for the analysis of the increase in Temperature of Interturbine is Fault Tree Analysis (FTA) that is a technique for identifying risks that contribute to failure. Generally, the steps in the analysis technique use Fault Tree Analysys (FTA first step is data collection, second step is to define the failures that occur then complete with a failure analysis, third step is to start a fault tree diagram, then evaluate the minimum cut set. Through a minimum process using a minimum cut set, is obtained the cause of the increase in Temperature of Interturbine that occurs by the compressor parts, heat engine parts and FCU problems. The problem in the compressor part is the retraction of air intake, compressor (dirty, erosion and FOD), leakage in the compressor valve, and air leakage in the case of a gas generator, fuel nozzle and drain valve, on the other side of the engine's heat which is damage to the turbine compressor propeller ring, blade compressor turbine and leakage on the interstage sealing ring. The problem with FCU is the damage to fuel injection, igniton, fluctuation and fuel valve.

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