Method for acquiring shaking parameters of rocket propellant and computer readable storage medium

Abstract

The invention discloses a method for acquiring shaking parameters of a rocket propellant and a computer readable storage medium, and the method comprises the steps: carrying out simulation calculation of the liquid shaking of the propellant in a rocket storage tank, and obtaining the time domain data of the shaking force and the time domain data of the shaking moment; performing n-order Fourier transform on the shaking force time domain data to obtain n-order shaking frequency; and performing establishment of a corresponding shaking equation and curve fitting matching on the shaking force time domain data, the shaking torque time domain data and the n-order shaking frequency to obtain the mass center position of the n-order shaking mass of the propellant. By the adoption of the method, the technical problem that in the prior art, the precision control of a rocket is affected due to the fact that the obtaining precision of the shaking parameters is low can be effectively solved.

Description

technical field [0001] The present invention relates to the field of aerospace, in particular to a method for obtaining rocket propellant sloshing parameters and a computer-readable storage medium. Background technique [0002] During the flight of the rocket, the rocket body is subject to the changing thrust of the engine, the wind shear encountered during flight, the gust of wind and the movement caused by the control system command, which will arouse the sloshing of the propellant in the tank. The sloshing of propellant may cause many instabilities of the rocket body, which can seriously cause the rocket flight to lose control. In order to solve the above problems, anti-sway plates can usually be arranged in the tank to suppress the swaying. Among them, the impact of the liquid sloshing of the propellant on the stability of the rocket body is transmitted or reflected through the sloshing (characteristic) parameters. [0003] At present, the method of obtaining sloshing ...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a method for obtaining rocket propellant sloshing parameters and a computer-readable storage medium, which solves the problems in the prior art that the calculation of sloshing parameters using theoretical formulas results in low accuracy and affects the precise control of the rocket. Conducive to improving the accuracy of shake parameter acquisition

Images