Method for determining influence of vacuum plume on equipment of any configuration

Abstract

The invention discloses a method for determining the influence of vacuum plume on equipment with any configuration, which decouples vacuum plume field calculation and impact calculation of flow on thesurface of the equipment, and comprises the following steps of: firstly, obtaining flow field parameters of an undisturbed state near the wall surface of the equipment; secondly, constructing an equipment surface grid, and obtaining a grid center point flow parameter by adopting an interpolation method; and finally, by correcting the Newton theory and selecting a gas and equipment surface actionmodel suitable for equipment wall surface conditions, obtaining impact pressure intensity, heat flux density and mass flow density distribution of plume acting on equipment wall surface grid points. According to the method, the problems that plume analysis modeling of the vacuum thruster of the complex configuration equipment is difficult and much time is consumed for calculation are solved, plumeinfluence evaluation of the complex configuration equipment can be rapidly carried out, and a design basis is provided for equipment position adjustment and thermal protection design.

Description

technical field [0001] The invention belongs to the technical field of thruster (engine) vacuum plume force, heat and pollution effect analysis, and proposes a method for determining the influence of vacuum plume on arbitrary configuration equipment. Background technique [0002] The analysis of thruster plume effect is an important part of spacecraft development. During the operation of the attitude and orbit control thruster, the plume generated may hit the surface of the spacecraft, generate disturbance force and moment, and affect the accuracy and stability of the spacecraft control system; it may generate a large heat flow on the surface of the equipment, affecting the performance of the equipment and thermal protection system design; possible contamination of sensors and optical lenses, harmful effects on optical surfaces, thermal control coatings and solar cell array surfaces, affecting the equipment layout and protection system design of star tables, thus directly af...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings and limitations of the prior art, decouple the calculation of the vacuum plume field from the calculation of the impact of the flow on the surface of the equipment, and provide a surface suitable for any configuration of equipment (such as ribbed antennas). Mesh construction method to solve the problem of plume effect analysis of complex spacecraft configuration equipment

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