关键词: 空中加油仿真, 软管-锥套, 多体动力学, 多学科耦合, CFD

Abstract:

Hose-drogue aerial refueling technology developed new applications including UAVs in recent years， leading to renewed research and investment. Simulation of aerial refueling systems with the numerical method has become indispensable in the design， development and flight test of the refueling system. However， the accuracy of engineering simplified models cannot meet the practical need. On the other hand， the coupling method based on the unsteady Computational Fluid Dynamics （CFD） method requires large amounts of computation resources and cannot satisfy fast design iteration and optimization. This study develops a new hose-drogue refueling simulation framework based on Multiple Body Dynamics （MBD） and CFD. Multiple validation examples are performed for the typical refueling system with full scale and scaling models. By combining the unsteady CFD， aerodynamic modeling method and time-based interpolation method， the current simulation method achieves the same accuracy with the unsteady CFD-MBD method while reducing computation resource to less than 1/100.

Key words: aerial refueling, hose-drogue, multiple body dynamics, multidiscipline simulation, CFD