Simulation of the Store Separation from Internal Weapons Bay Using M-SST des Model

Abstract

The internal carriage of stores on an aircraft's merit is especially importance for attack aircraft. For the safe carriage and separation of stores, it is important to know the flow field environment the store experiences during flight. A CFD investigation was conducted to determine cavity flow characteristics. M-SST DES Method are used as numerical simulate method. Compared with the wind tunnel test results, the open cavity flows are studied. The numerical simulation results are in good agreement with the wind tunnel test results, thus verifying the credibleness of the M-SST DES Method. As a typical research model, AEDC's 'Wing-Pylon-Finned Store' wind tunnel test model is computed in this paper. Last, this paper investigates the store's separation characteristic, which is internal carriage on and release from aircraft. Those results are also indicated that the DES method of numerical simulation flow-filed can embody the unsteady aerodynamic random factors of the store separation from internal weapons bay.