Abstract
The process of the sabot discard of an electromagnetic integrated launched projectile (EMILP) has a great effect on the operational effectiveness of integrated launched projectile (ILP). Aiming at the characteristics of high-velocity discard, strong muzzle magnetic field of the EMILP, a coupled model of magnetic field and flow field for simulating the EMILP sabot discard has been established by using the harmonic analysis method, time–frequency analysis method and fitting interpolation method to gain the time-varying functions of electromagnetic force and torque, which serve as the external force and moment of six degrees of freedom (SDOF) movement, and meanwhile, by using the dynamic mesh technique to couple the fluid flow control equations and the SDOF movement equations. Taking for example, the EMILP named IAT-HVP designed by the Institute of Advanced Technology (IAT), University of Texas, Austin, TX, USA, this paper makes a simulation analysis of the sabot discard of ILP at a different angle of attack, and makes a comparison between it and test data. Simulation results show that the model proposed in this paper is high precision and effective.
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