Techniques for static analysis of a two-drive electromechanical steering actuator of a liquid-propellant rocket engine

The article contains results of iterative techniques developed for static analysis of a two-drive electromechanical steering actuator, namely, techniques for calculating its static (moment and regulating) characteristics enabling to perform computations with a specified computational error and in a minimum time. The proposed techniques are based on solution of systems of nonlinear polynomial and transcendental equations of mathematical models for the steering actuator describing its static operational modes. A mathematical model of the electromagnetic engine, mathematical model of the dynamic operational mode of two-drive electromechanical steering actuator of a liquid-propellant rocket engine, mathematical models of electric actuators and electromechanical systems, as well as a modification of Seidel technique for solving systems of nonlinear polynomial and transcendental equations form the basis for developing techniques for static analysis of a two-drive electromechanical steering actuator. Provided are validation results of the developed iterative techniques for static analysis of a two-drive electromechanical steering actuator. A dynamic “auto integration” method for computation of the regulating characteristic of the steering actuator is being developed to verify the iterative technique for static analysis. The impact of the speed performance dispersion for the electromagnetic engine on static characteristics of the steering actuator is under study.