Refueling docking at different velocities is simulated by using computational fluid dynamics(CFD)method.The Osher scheme and S-A turbulence model are used to solve the compressible Navier-Stokes equations,and the Delaunay mapping dynamic grid method is also employed.All the numerical results show that the velocity of refueling docking is very important for aerial refueling.When the velocity is lower than 3m/s,the refueling drogue will move upward with obvious cycle staggering,while moving upward with slight cycle staggering at the speed of3m/s.The results can be referenced by aerial refueling design. Refueling docking at different velocities is simulated by using computational fluid dynamics (CFD) method. Oscil scheme and SA turbulence models are used to solve the compressible Navier-Stokes equations, and the Delaunay mapping dynamic grid method is also employed. All the numerical results show that the velocity of refueling docking is very important for aerial refueling. When the velocity is lower than 3m / s, the refueling drogue will move upward with obvious cycle staggering, while moving upward with slight cycle staggering at the speed of 3m / s. results can be referenced by aerial refueling design.