Investigation of the Influence of Structural and Adjusting Parameters of a Quadruple-Orifices Electrohydraulic Amplifier on the Static Characteristics of Rocket Pack Steering Actuator

The article considered the results of researches of influence of constructional and adjusting parameters of the quadruple-orifices electrohydraulic amplifier on static characteristics of the steering actuator of the rocket pack. The studies are carried out using static analysis methods, including methods for calculating the static characteristics of an autonomous single-stage steering actuator with a quadruple-orifices electrohydraulic amplifier with negative overlapping of throttling windows of rectangular shape by spool plungers. As a result of research it is shown that the steering actuator does not have static stability. It is shown that the slope of the speed characteristic of the steering actuator is exerted by the dimensionless parameter of the local thickness of the incoming liner wall (the driven axis of the three-gear pump). Consequently, with the help of the variation of this parameter, it is possible to adjust the slope angle of the speed characteristic of the steering actuator, i.e., its gain factor. The design solutions of the steering actuator are proposed, which allow improving their output characteristics and facilitating adjustment

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