Abstract
Solid attitude control thrusters based on PWM principle are widely used in kinetic kill vehicle to control its attitude. In this paper, a kind of solid attitude control thruster is proposed and its piston’s motion model is established. One of the most important variables which has significant effect on the validity of the model is aerodynamic drag of rocker arm. We did research on the aerodynamic drag by throttle theory, numerical simulation and experiment. The results were consistent and proved to be valid by testing the pressure in the two control chambers. The result is expected to provide reference for the calculation and test of the aerodynamic drag and design of the solid attitude control.
Highlights
The solid attitude control thruster based on PWM principle is widely used in attitude control system of KKV
We studied the aerodynamic drag by throttle theory, numerical simulation and experiment
We did research on the aerodynamic drag by throttle theory, numerical simulation and experiment
Summary
The solid attitude control thruster based on PWM (pulse width modulation) principle is widely used in attitude control system of KKV (kinetic kill vehicle). It works under hot gas generated from the gas generator, so it has the advantages of structure, good reliability and good security, etc [1,2,3]. We introduced a kind of solid attitude control thruster which works under PWM signal. The aerodynamic drag has a significant impact on the mathematic model of the thruster, so research on the aerodynamic drag of the rocker arm is important and necessary. The method and result are expected to provide reference for the design and research on the solid attitude control thruster
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