南京航空航天大学学报（英文版）2026，Vol.43Issue(1)：27-39,13.DOI:10.16356/j.1005-1120.2026.01.003
直升机下洗流影响下的武器投放特性研究
Dynamic Behavior of Missiles Released from a Helicopter with Downwash Effect
摘要
Abstract
This study is dedicated to numerically investigate the dynamic behavior of a missile released from a helicopter under the influence of downwash from the rotating rotors using AGM-114 Hellfire and UH-60 as the testcase.Simulations are conducted using unsteady Reynolds-averaged Navier-Stokes(URANS)with shear stress transport(SST)k-ω turbulence model,incorporating six-degree-of-freedom(6-DOF)motion and overset grid.Two releasing scenarios,viz.,hover and forward flight,are analyzed under varying missile launch thrust and helicopter forward flight speed.Results reveal that the rotor downwash significantly affects the stability of the missile,particularly during hovering case,where low thrust prolongs wake interaction.In forward flight,the increased airspeed can in principle reduce wake influence but introduces asymmetrical aerodynamic effects on the trajectory of the missile.The findings offer guidance for missile release and launch planning in rotorcraft operations.关键词
直升机旋翼尾流/下洗效应/6-DOF模型/非定常雷诺平均Navier-Stokes(URANS)/释放问题Key words
helicopter rotor wake/downwash effect/six-degree-of-freedom(6-DOF)model/unsteady Reynolds-averaged Navier-Stokes(URANS)/release problems分类
航空航天引用本文复制引用
COSTERG Fabien,邓双厚,乔红宇..直升机下洗流影响下的武器投放特性研究[J].南京航空航天大学学报（英文版）,2026,43(1):27-39,13.基金项目
This work was supported by the Na-tional Natural Science Foundation of China(No.11602200).The authors would like to acknowledge the following individ-uals for their assistance:XIAO Tianhang,ZHI Haolin,ZHU Zhenhao,XIAO Jiliang,ZHENG Li,LIN Yinnan and CHEN Meili,all affiliated with the Nanjing University of Aeronautics and Astronautics(NUAA). （No.11602200）
