Analisis Kinerja Turbofan Engine CFM56-7B Pada Pesawat Boeing 737-800 NG

Rahmadini, Wulan (2025) Analisis Kinerja Turbofan Engine CFM56-7B Pada Pesawat Boeing 737-800 NG. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sektor penerbangan menuntut mesin turbofan yang andal, hemat bahan bakar, dan ramah lingkungan guna mendukung keberlanjutan operasional serta kepatuhan terhadap regulasi emisi. Sehingga untuk memastikan bahwa mesin CFM56-7B, maka kinerja engine harus dievaluasi secara menyeluruh untuk memastikan bahwa telah memenuhi standar pabrikan. Dengan menerapkan prinsip siklus Brayton aktual pada data hasil pengujian test cell pada kondisi maximum continuous dan take off, penelitian ini bertujuan untuk menganalisis kinerja termodinamika engine CFM56-7B pasca perawatan. Seluruh data kemudian dikonversi ke satuan SI sebelum diolah guna menentukan parameter kinerja utama, termasuk thrust, specific thrust, Thrust Specific Fuel Consumption (TSFC), thermal efficiency, dan work ratio. Berdasarkan pengolahan data, menunjukkan bahwa kinerja engine masih berada dalam batas standar pabrikan dengan persen error sebesar 1,69%. Hasil analisis menunjukkan thrust dan specific thrust meningkat seiring naiknya TIT (Turbine Inlet Temperature), thrust terbesar pada kondisi maximum continuous dan take off masing-masing sebesar 124,19 kN dan 125,62 kN sedangkan pada specific thrust sebesar 356,22 N.s/kg dan 357,69 N.s/kg. Meningkatnya nilai TIT (Turbine Inlet Temperature) berkontribusi menurunkan nilai TSFC sebesar 3,40% dan 3,47% masing-masing pada kondisi maximum continuous dan take off. Efisiensi thermal meningkat seiring dengan meningkatnya nilai TIT (Turbine Inlet Temperature), dengan nilai terbesar adalah 0,290 dan 0,283 serta work ratio yang relatif tetap pada peningkatan TIT sebesar 0,326 dan 0,327. Berdasarkan hasil grafik variasi nilai TIT (Turbine Inlet Temperature) terhadap parameter kinerja turbofan engine, dirumuskan rekomendasi TIT (Turbine Inlet Temperature) operasional optimal pada rentang 1650-1700 °K karena menunjukkan kinerja terbaik, baik pada kondisi maximum continuous maupun take off.
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The aviation sector demands turbofan engines that are reliable, fuel-efficient, and environmentally friendly to support operational sustainability and comply with emission regulations. Therefore, to ensure the performance of the CFM56-7B engine, a comprehensive evaluation must be conducted to verify that it meets the manufacturer's standards. By applying the actual Brayton cycle principles to test cell data under maximum continuous and take-off conditions, this study aims to analyze the thermodynamic performance of the CFM56-7B engine after maintenance. All data were converted into SI units before being processed to determine key performance parameters, including thrust, specific thrust, Thrust Specific Fuel Consumption (TSFC), thermal efficiency, and work ratio. Based on the data analysis, the engine performance remains within the manufacturer’s standard limits, with a percentage error of 1.69%. The results show that both thrust and specific thrust increase with higher Turbine Inlet Temperature (TIT). The highest thrust under maximum continuous and take-off conditions reached 124.19 kN and 125.62 kN, respectively, while the specific thrust was 356.22 N·s/kg and 357.69 N·s/kg. The increase in TIT also contributed to a reduction in TSFC by 3.40% and 3.47% under maximum continuous and take-off conditions, respectively. Thermal efficiency improved as TIT increased, with maximum values of 0.290 and 0.283, while the work ratio remained relatively constant at 0.326 and 0.327. Based on the performance graphs showing the variation of TIT in relation to turbofan engine performance parameters, an optimal operational TIT range of 1650–1700 K is recommended, as it demonstrated the best performance under both maximum continuous and take-off conditions.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	CFM56-7B, Engine, Kinerja, Siklus Brayton, Test Cell, TIT, Turbofan, Brayton cycle, CFM56-7B, Engine, Performance, Test Cell, TIT, Turbofan.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ266 Turbines. Turbomachines (General) T Technology > TJ Mechanical engineering and machinery > TJ778 Gas turbines
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Wulan Rahmadini
Date Deposited:	04 Aug 2025 02:51
Last Modified:	04 Aug 2025 02:51
URI:	http://repository.its.ac.id/id/eprint/126325

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