This paper presents all the significant nonlinearities that exist in the description of an\nelectro hydraulic actuator for flexible nozzle thrust vector control. Starting from practical possibilities\nof the theory of a nonlinear system (which are based on the analyses of one nonlinearity or one\nequivalent nonlinearity in the proximity of the linear description of an actuator), this paper explores\nthe possibilities of additional analyses of a nonlinear electro hydraulic actuator for flexible nozzle\nthrust vector control. These explored possibilities can provide information that is useful for the design\nof the control algorithm, as well as for the general design of a flexible nozzle and actuator system.
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