In this paper, the effect of secondary fluid injection on deviation and control of thrust vector with use of sprayed liquid fluid multi injection in to divergence nozzle flow is studied. Freon fluid as injection fluid have been chosen that more applicable and the fluent software is used for simulation flow field. In this investigation after grid study, different simulations in order to obtain the effect of injection flow rate, quality of distribution of injection rate between injectors, number of injectors, and their arrangement are studied then the diagram of thrust vector angle deviation compare to injection rate, and state of arrangement are calculated. Using of these diagrams, optimum of injection distribution rate, amount of injection, and injectors arrangement obtained and can use for design of LITVC.

Keywords: Thrust Vector Control (TVC), Liquid Injection, injectors arrangement, distribution of injection rate

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