Volume 37, Number 1, February 2019
|Page(s)||186 - 194|
|Published online||03 April 2019|
The Numerical Simulation of UAV's Landing in Ship Airwake
School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China
2 Science and Technology on UAV Laboratory, Northwestern Polytechnical University, Xi’an 710065, China
In order to investigate the influence of ship airwake on aerodynamic characteristics of the carrier-based aircraft, UAV's landings in different winds over deck were simulated by Overset Mesh method. Firstly, mesh factors, steady and unsteady methods were compared based on single aircraft carrier. The results showed that the boundary layer mesh around ship didn't show obvious influence for our simulation, and the calculation results between the steady and unsteady time average showed a similar trend. Then, aircraft carrier's flow fields in three wind directions were analyzed, and ship airwake variations with different direction winds over deck were concluded as well. Next, the reliability of Overset Mesh was verified though single UAV's landing simulation. Finally, the coupled flow fields of UAV/ship were studied. The calculation results indicated that aircraft was always in a low dynamic pressure condition, the lift and pitching moment of UAV had apparent changes in landing. Meanwhile, the aerodynamic fluctuations of UAV also revealed differences in different wind directions. The simulation results can be regarded as a reference for the safety assessment of carrier-based aircraft's landing and its control in the future.
Key words: ship airwake / UAV / carrier landing / numerical simulation / Overset Mesh / unsteady aerodynamics
关键字 : 舰船尾迹 / 无人机 / 着舰飞行 / 数值模拟 / 嵌套网格 / 非定常气动力
© 2019 Journal of Northwestern Polytechnical University
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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