Experimental investigation of flow characteristics and performance parameters of a podded aft engine air intake
DOI:
https://doi.org/10.14311/AP.2023.63.0371Keywords:
podded air intake, wind tunnel testing, regional jet aircraft, aerodynamic interface planeAbstract
This experimental study investigates the flow characteristics and performance parameters of a podded intake in aft-engine configuration at the aerodynamic interface plane (AIP), which is a typical configuration of a generic twin-engine regional jet aircraft. A scaled model aircraft with the port side hollow nacelle is equipped with total pressure rakes positioned exactly at the AIP to obtain the total pressure recovery and distortion. Multiple flight configurations (landing, take-off, and climb-out) with varying angle of attack (AoA) and side slip angle (SSA) are considered; attention has been paid to those with undesirable effects to the flow approaching the engine, by deploying flaps, slats, spoilers, and landing gear compartment. The mass flow rate and thus the mach number at the AIP is adjusted by changing the size of the exhaust nozzle. The Reynolds number dissimilarity is partially compensated by transition band application on the fuselage as well as engine inlet.
Downloads
References
S. Kennedy, T. Robinson, S. Spence, J. Richardson. Computational Investigation of Inlet Distortion at High Angles of Attack. Journal of Aircraft 51(2):361–376, 2014. https://doi.org/10.2514/1.C031789
ECFR. 27.939 Turbine Engine Operating Characteristics, National archives and records administration, 1976.
J. Pečinka, G. T. Bugajski, P. Kmoch, A. Jílek. Jet engine inlet distortion screen and descriptor evaluation. Acta Polytechnica 57(1):22–31, 2017. https://doi.org/10.14311/AP.2017.57.0022
J. Seddon, E. L. Goldsmith. Intake aerodynamics. American Institute of Aeronautics and Astronautics, 2nd edn., 1999.
B. Hodder, B. Farquhar, M. Dudley. A large-scale investigation of engine influence on inlet performance at angle-of-attack. In 1st Flight Test Conference. American Institute of Aeronautics and Astronautics, 1981. https://doi.org/10.2514/6.1981-2481
Sutrisno, T. A. Rohmat, S. B. Wibowo, S. Iswahyudi. Vortex dynamics study of the canard deflection angles’ influence on the Sukhoi Su-30-like model to improve stall delays at high AoA. Aerospace 6(2):12, 2019. https://doi.org/10.3390/aerospace6020012
T. Triantafyllou, T. Nikolaidis, M. Diakostefanis, P. Pilidis. Total pressure distortion levels at the aerodynamic interface plane of a military aircraft. The Aeronautical Journal 119(1219):1147–1166, 2015. https://doi.org/10.1017/S0001924000011179
Skybrary.aero. [2021-07-10]. https://www.skybrary.aero.
D. K. Hall, E. M. Greitzer, A. Uranga, et al. Inlet flow distortion in an advanced civil transport boundary layer ingesting engine installation. Journal of Turbomachinery 144(10):101002, 2022. https://doi.org/10.1115/1.4054035
T. Berthelon, A. Dugeai, J. Langridge, F. Thouverez. Analysis of vortex ingestion impact on the dynamic response of the fan in resonance condition. In Volume 7A: Structures and Dynamics. American Society of Mechanical Engineers, 2019. https://doi.org/10.1115/GT2019-90939
W. T. Cousins. History, philosophy, physics, and future directions of aircraft propulsion system/inlet integration. In Volume 2: Turbo Expo 2004. ASMEDC, 2004. https://doi.org/10.1115/GT2004-54210
M. Davis, A. Hale, D. Beale. An argument for enhancement of the current inlet distortion ground test practice for aircraft gas turbine engines. Journal of Turbomachinery 124(2):235–241, 2002. https://doi.org/10.1115/1.1451087
S-16 Turbine Engine Inlet Flow Distortion Committee. An Assessment of Planar Waves, 2021. https://doi.org/10.4271/AIR5866A
S-16 Turbine Engine Inlet Flow Distortion Committee. Inlet Total-Pressure-Distortion Considerations for Gas-Turbine Engines, 2017. https://doi.org/10.4271/AIR1419C
Society of Automotive Engineers (SAE). Gas Turbine Engine Inlet Flow Distortion Guidelines, SAE ARP1420, 2002.
U. Doll, M. Migliorini, J. Baikie, et al. Non-intrusive flow diagnostics for unsteady inlet flow distortion measurements in novel aircraft architectures. Progress in Aerospace Sciences 130:100810, 2022. https://doi.org/10.1016/j.paerosci.2022.100810
S-16 Turbine Engine Inlet Flow Distortion Committee. Gas Turbine Engine Inlet Flow Distortion Guidelines, 1978. https://doi.org/10.4271/ARP1420
Ankara Wind Tunnel. [2021-07-10]. https://www.art.gov.tr.
GrabCAD. [2021-07-10]. https://www.grabcad.com.
D. Motycka, S. Welling, F. Lewis-Smith. Comparison of model and full scale inlet distortions for subsonic commercial transport inlets. In Aircraft Design Systems and Operations Meeting. American Institute of Aeronautics and Astronautics, 1984. https://doi.org/10.2514/6.1984-2487
J. B. Barlow, W. H. Rae, A. Pope. Low-speed wind tunnel testing. John Wiley & Sons, 3rd edn., 1999.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2024 Human Amiri, Umut Can Küçük, Yiğit Fırat Kuşcu
This work is licensed under a Creative Commons Attribution 4.0 International License.
