Research on effects of thrust reverser exhaust flows on aerodynamic characteristics of wing-mounted civil aircraft

Renyu Hu; Dongyun Zhang; Haoran Sun

doi:10.1117/12.3039219

5 August 2024 Research on effects of thrust reverser exhaust flows on aerodynamic characteristics of wing-mounted civil aircraft

Renyu Hu, Dongyun Zhang, Haoran Sun

Author Affiliations +

Proceedings Volume 13226, Third International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2024); 132263C (2024) https://doi.org/10.1117/12.3039219
Event: 3rd International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2024), 2024, Changsha, China

Abstract

In order to reduce the ground roll distance during landing or rejected takeoff, cascade-type thrust reversers are adopted by modern civil aircraft to turn part of fan duct flow forward to generate braking forces, which results in thrust reverser exhaust flows affecting the aerodynamic characteristics of the aircraft. Numerical simulation of the flow field around a wing-mount civil aircraft with engines operating in reversed mode shows that exhaust flows from the thrust reverser cascades block the incoming flow and create a low energy area in the flow field around the airframe behind them. As the aircraft slows down and exhaust flow is less suppressed by the incoming flow, this affected area around the aircraft expands causing the changes in aircraft aerodynamic characteristics more significant. It is observed in the wind tunnel test using TPS (Turbine Powered Simulation) techniques to simulate thrust reverser exhaust flows that aircraft drag coefficient and yaw moment coefficient produced by rudder deflection of zero angle of side-slip at 60kts (knots) are only 55% and 25% of that of 140kts respectively due to the intensified shielding effect of exhaust flows from both engines’ cascades at lower speeds and that spoiler effectiveness at typical engine power for thrust reverser application is only 35%~59% that of idling power over the aircraft speed range from 60kts to 140kts.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Renyu Hu, Dongyun Zhang, and Haoran Sun "Research on effects of thrust reverser exhaust flows on aerodynamic characteristics of wing-mounted civil aircraft", Proc. SPIE 13226, Third International Conference on Advanced Manufacturing Technology and Manufacturing Systems (ICAMTMS 2024), 132263C (5 August 2024); https://doi.org/10.1117/12.3039219

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KEYWORDS

Aerodynamics

Calibration

Wind measurement

Boundary conditions

Turbines

Numerical analysis

Numerical simulations

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