Analisa Pengaruh Variasi Ketinggian Terhadap Kinerja Turbopro Engine Ct7-9c Pada Pesawat Cn235

Budiarti, Nanda Putri (2019) Analisa Pengaruh Variasi Ketinggian Terhadap Kinerja Turbopro Engine Ct7-9c Pada Pesawat Cn235. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Mesin turboprop adalah jenis pesawat yang menggunakan turbin gas untuk menggerakan propeller. Saat ini, mesin-mesin turboprop umumnya digunakan pada pesawat terbang berkecepatan rendah (subsonik). Turbin gas yang dirancang khusus untuk keperluan ini, hampir semua output yang digunakan untuk menggerakkan propeller. 80% daya dorongnya berasal dari propeller dan 20% sisanya adalah gaya dorong yang dihasilkan oleh gas buang. Kesiapan suatu mesin terlihat dan terukur dari hasil pengamatan kinerja mesin tersebut. Oleh karena itu diperlukan suatu analisa untuk mengetahui kinerja turbin gas sebagai penggerak pesawat turboprop. Pada tugas akhir ini dilakukan analisa perhitungan pengaruh variasi ketinggian terhadap kinerja turboprop engine CT7-9C pesawat CN-235. Perhitungan total equivalent power, equivalent specific fuel consumption, dilakukan secara termodinamika dengan mencari temperatur dan tekanan di setiap state turboprop. Dari tugas akhir ini didapatkan hasil bahwa ketinggian memiliki pengaruh yang signifikan terhadap kinerja turboprop. Gaya dorong paling tinggi yaitu 1167,4099 kW terjadi ketika diatas permukaan laut. Semakin besar gaya dorong yang dihasilkan maka semakin besar pula equivalent spesific fuel consumption yang dibutuhkan. Seperti pada hasil analisa, equivalent spesific fuel consumption terbesar yaitu 0,3267 kg/kW.h pada ketinggian 1500 m, semakin besar power yang dihasilkan akan semakin besar pula konsumsi bahan bakar yang dibutuhkan.
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A turboprop engine is a type of aircraft which is uses a gas turbine to drive a propeller. Nowadays, turboprop engines were commonly used in low speed (subsonic). Fas turbines designed for this purpose, almost all of the output used to drive the propeller. 80% of the thrust comes from propeller and the 20% is the thrust produced by the exhaust gas. The readiness of a machine that is visible and measurable from the results of evaluating the performance f the engine. Therefore, an analysis is needed to determine the needs of gas turbine as an activator for turboprop aircraft. In this final project, an analysis of the effect of altitude variations on the performance of the CT7-9C CN-235 aircraft turboprop engine was carried out. Total equivalent power, equivalent specific fuel consumption are carried out by thermodynamics with looking for temperature and pressure in each turboprop state. From this final project, the results show that altitude has a significant influence on turboprop performance. The highest thrust force of 1165.5651 kW occurs when above sea level. The greater of the thrust force produced, the greater the specific fuel consumption required. As in the results of the analysis, the greatest specific fuel consumption is 0,3267 kg/kW.h at height of 1500 m occurs in the highest thrust force as well.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Kata kunci : turboprop, kinerja, total equivalent power, equivalent spesific fuel consumption.
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 Industrial Technology > Mechanical Engineering > 21401-(D3) Diploma 3
Depositing User:	Nanda Putri Budiarti
Date Deposited:	13 Aug 2026 06:28
Last Modified:	13 Aug 2026 06:28
URI:	http://repository.its.ac.id/id/eprint/70692

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