Abstract
With the gradual development of aerospace industry, the demand for missile performance is also growing. The steering gear, as one of the main implementing agencies of the missile guidance and control system, can adjust the actual thrust size through the closed-loop control system during missile guidance the deflection angle of the rudder surface, in order to change the missile's flight speed and flight attitude. The missile during the flight attitude correction and speed adjustment are through the electric servo output power to change the size of the output to complete. In this paper, the unsteady turbulent analysis theory is used to analyze the thrust test mechanism of jet. Through the simulation of the flow field, the influence of bearing wall position on the impact jet backflow zone location is studied, and the position of the bearing wall whose pressure value is the closest to the true value is determined. In addition, a simplified test system of jet thrust test was designed. The relationship between wall position and pressure was verified through experiments, which verified the accuracy of simulation results.
Highlights
In view of the current increasingly tense international military competition, the flight performance of the missile needs higher requirements
The electric steering gear is the main actuator in the process of the missile guidance, whose performance parameters largely determine the accuracy and stability of the missile guidance system [1,2,3,4]
In order to improve the accuracy of the missile during the flight, it is very important to analyze and study the test mechanism of the initial pilot jet thrust of the electric steering gear and perform the corresponding experimental research
Summary
In view of the current increasingly tense international military competition, the flight performance of the missile needs higher requirements. In order to improve the accuracy of the missile during the flight, it is very important to analyze and study the test mechanism of the initial pilot jet thrust of the electric steering gear and perform the corresponding experimental research. In 2015, Kalifa RB, Habli S, Said NM et al [15] studied the flow field formed by a planar air jet impact on a flat surface using the Reynolds number average equation and RSM second-order turbulence closure. The bearing force of the bearing wall under impinging jet under different conditions has not been extensively studied In this pursuit, the present research envisaged the study of influence of different bearing wall positions on the wall pressure, and based on the analysis of the flow field simulation, optimization of the bearing wall structure was done
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