Simulation Analysis of Outboard Gas Status for Spacecraft Gas Leakage In-Orbit

Abstract

Due to high vacuum environment of spacecraft orbiting and complex external surface structure of spacecraft cabin, outboard leak detection of spacecraft in-orbit cannot directly adopt existing mature technology. In this article, outboard gas status of spacecraft leakage in-orbit is simulated through computational mechanics and Monte Carlo simulation methods. The simulation results show that complex external surface structure of spacecraft cabin, especially external thermal control layers composed of multilayer insulation material, obviously blocks leakage gas into astrospace and reduces detection sensitivity of outboard leak detection methods. This simulation process and results can provide analyze method and theoretical data for detection scheme design and testing instrument selection of outboard leak detection in the future.