ANALISIS KEANDALAN KOMPONEN AIR CONDITIONING SYSTEM PADA PESAWAT BOEING 737-900 ER MENGGUNAKAN METODE DISTRIBUSI WEIBULL

LERRY RAIMUNDO MANIKIN, ADOLFO (2018) ANALISIS KEANDALAN KOMPONEN AIR CONDITIONING SYSTEM PADA PESAWAT BOEING 737-900 ER MENGGUNAKAN METODE DISTRIBUSI WEIBULL. Skripsi thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

Engine overhaul is a process to restore engine performance due to the use of flying hours. The performance in accordance with the overhaul time is determined by the manufacturer. TBO standard for PT6A-114A engine is 3600 hours. TBO extension is an effort made to extend the overhaul execution time interval which is contained in the SB issued by the manufacturer. The engine that is TBO has been extended, and must have the equal performance with the standars TBO engine. Therefore, specific fuel consumption and specific powerbecome one of the important parameter in the implementation of the TBO extension. Engine performance analysis is performed to determine engine performance before and after TBO extension implementation.The datas needed for analysis are taken from AFL when the aircraft is flying at 4.500 ft- 13.500 ft with 1.000 ft altitude variance. The calculation was done using mathcad and microsoft excel software. The results of the calculation of the PT6A-114A performance engine before and after TBO extensions tend to have little difference. The fuel/air ratio engine that is carried out by the extension is smaller than the engine that is carried by TBO which is equal to( 0,73x 〖10〗^(-4))⁄(1.000 ft) with an average specific thrust value of 211.65 lbf/(lbm/sec). The specific fuel consumption of the engine the TBO extension is lower at 0.234837 (lbm/hr)/lbf and the average specific power engine carried out by TBO extensions is also higher than the engine carried by TBO is 40.76588 hp/(lbm sec). From the results of the calculations that have been obtained, it can be said that the PT6A-114A engine with PC1109 serial number as a whole, the performance parameters are much higher when TBO extensions are compared to the standard TBO but for the value of specific fuel consumption, TBO extension is much more high compared to standard TBO. Keyword: Engine, PT6A-114A, Cruising, TBO, TBO extension

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