Effect of a Jet Control Device on the Process of Missile and Internal Weapons Bay Separation

To ensure that the missile is safely separated from internal weapons bay, jet used to control process of separation, which mounted on front edge bay. The length-to-depth ratio bay was L/D=8, diameter d1 =0.178 m, d2 =0.05 m . FLUENT software combined with our group-developed code under platform a user-defined function (UDF) solve flow field and six-degrees-of-freedom (6DOF) missile. detached eddy simulation method dynamic mesh technology were in numerical calculations. boundary condition missile, aircraft no-slip wall condition. pressure-inlet. pressure far-field selected as other boundaries. constraint ejection device considered. It found thickens shear layer, so layer more gradual velocity gradients, beneficial separation distance between positive z-direction 1.74 times without at t=0.5 s. In case device, pitching angle ranged 0.93° -3.94° , angular motion range smaller than without. can make characteristics friendly, enable separate quickly, stably, safely.