Analisis Geometri Engine Inlet terhadap Induced Drag pada Pesawat B737-800NG dan A320 Menggunakan Computational Fluid Dynamic
DOI:
https://doi.org/10.55606/teknik.v6i1.8537Keywords:
Inlet, Nacelle, Drag, P/V ratio, CFD Simulation, B737-800, A320Abstract
The engine nacelle, particularly the inlet section, plays a crucial role in propulsion performance as it affects the pressure and airflow velocity entering the fan and compressor. This study compares the aerodynamic performance of two inlet geometries: the flattened lip design of the Boeing 737-800NG and the circular lip design of the Airbus A320. A Computational Fluid Dynamics (CFD) simulation was conducted using ANSYS Fluent, with three-dimensional models developed in SolidWorks based on official geometrical data from Boeing and Airbus. The analyzed parameters included average pressure, airflow velocity, P/V ratio, drag force, and drag Coefficient under two operating conditions—cruise (Mach 0.7) and climb (Mach 0.2). The results show that the Boeing inlet produced lower drag forces, 824.43 N during cruise and 234.29 N during climb, compared to Airbus with 911.94 N and 249.56 N, respectively. The flattened lip design demonstrated better flow diffusion efficiency and reduced drag by up to 9.59%. In conclusion, inlet geometry significantly influences aerodynamic efficiency. Optimizing inlet contour can enhance aircraft performance without major structural modifications, offering potential improvements for future narrow-body aircraft design.
References
Hidayati, S.N. (2016). Pengaruh Pendekatan Keras dan Lunak Pemimpin Organisasi terhadap Kepuasan Kerja dan Potensi Mogok Kerja Karyawan. Jurnal Maksipreneur: Manajemen, Koperasi, dan Entrepreneurship, 5(2), 57-66. http://dx.doi.org/10.30588/SOSHUMDIK.v5i2.164.
Risdwiyanto, A. & Kurniyati, Y. (2015). Strategi Pemasaran Perguruan Tinggi Swasta di Kabupaten Sleman Yogyakarta Berbasis Rangsangan Pemasaran. Jurnal Maksipreneur: Manajemen, Koperasi, dan Entrepreneurship, 5(1), 1-23. http://dx.doi.org/10.30588/SOSHUMDIK.v5i1.142.
Bator, R. J., Bryan, A. D., & Schultz, P. W. (2011). Who Gives a Hoot?: Intercept Surveys of Litterers and Disposers. Environment and Behavior, 43(3), 295–315. https://doi.org/10.1177/0013916509356884.
Airbus S.A.S. (2024). A320-200/-300 Aircraft Characteristics Airport and Maintenance Planning. Ac, 1–22.
Anderson, J. D. (2011). Fundamentals of Aerodynamics.
Baer, J. C., & Schuehle, A. L. (1982). Re-engining the 737. SAE Technical Papers. https://doi.org/10.4271/821442
Boeing. (2023). IPC BOEING 737-800 ATA 71 Engine Cowling.
Boeing. (2020). Boeing 737 Airplane Characteristics for Airport Planning. The Economic Journal, 80(318), 307.
Boeing Commerical Airplanes. (2019). 737 MAX Airplane Characteristics for Airport Planning D6-38A004 Rev E. July, 20–24.
CFM International. (1984). CFM56-3 Technical Description and Configuration Overview. Internal Product Brief.
CFM International SA. (2017). The LEAP engine overview. 1–22.
Diop, M. M., & Khalid, A. (2025). Design and Analysis of High-Bypass Turbofan Engine Nacelle to Enhance Performance. AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2025, 1–11. https://doi.org/10.2514/6.2025-1716
EASA. (2023). CFM International CFM56-7B series engines Issue: 07 Type-Certificate Data Sheet. January, 1–22.
Effendi, Y., & Jamaludin, J. (2020). Analisis Aliran Udara Fan Blade Pada Mesin CFM56-7B Boeing 737-800Ng dengan Computational Fluid Dynamic (CFD). Motor Bakar : Jurnal Teknik Mesin, 4(1), 1–8. https://doi.org/10.31000/mbjtm.v4i1.5711
Farida, I., Prasetyo, K., Bhiftime, E. I., Holson, N., & Silalahi, M. (2025). Analisis Tren Efisiensi Bahan Bakar dalam Industri Penerbangan. 4(1).
Frydman, E., Marom, S., Chetboun, J., & Seror, S. (2018). OpenFOAM based unstructured accurate CFD solver for arbitrary geometries - Recent developments & industrial applications. 58th Israel Annual Conference on Aerospace Sciences, IACAS 2018, 2018-March(August), 283–312.
Hall, Z. M., Ahuja, V., Hartfield, R., Shelton, A., & Ahmed, A. (2009). Optimization of a turbofan inlet duct using a genetic algorithm and CFD. Collection of Technical Papers - AIAA Applied Aerodynamics Conference, 1–16. https://doi.org/10.2514/6.2009-3775
IATA. (2019). Annual Review 2019 - Regional Profit Performance.
Kaplan, Y. (2024). Aerodynamic Optimization of Inlet Design for High Bypass. Natural and Applied Sciences of Middle East Technical University.
Langston, L. (2019). 10,000th 737 and the Hamster Mouth Legacy. Mechanical Engineering Magazine (ASME).
Mulyani, S. (2016). Analisis Performa Engine Turbofan Pesawat Boeing 737-300. Sekolah Tinggi Teknologi Adisutjipto Yogyakarta, 1–6.
Santos da Conceição, B. (2016). Design Optimization of The A320 Engine Inlet Cowl. November, 1–10.
Subagyo. (2015). Simulasi Inlet Duct Engine Pesawat Dua Dimensi (2D). Media Kita Group Anggota IKAPI, 171–178.
Sugiyono. (2023). Metode Penelitian. Bandung: PT. Alfabet Danandjadja.
Tu, J., Yeoh, G. H., & Liu, C. (2018). Computational Fluid Dynamics: A practical approach. In Computational Fluid Dynamics: A Practical Approach.
Yan, W., Quanlin, D., & Liu, X. (2017). Numerical investigation on the effect of inlet acceleration on inlet flow distortion in a centrifugal fan. 102(Icmmse), 336–341. https://doi.org/10.2991/icmmse-17.2017.55
Zhang, M. (2021). Numerical Investigation of Nacelle Intake Flow Distortion at Crosswind Conditions. 32nd Congress of the International Council of the Aeronautical Sciences, ICAS 2021, 1–11.
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