Performance Testing and Optimization Layout Improvement Analysis of Multi-layer Insulation Materials for Space
Multi-layer insulation materials have strong insulation performance in high vacuum environments.With the development of space technology,special requirements have been put forward for the insulation performance of multi-layer insulation materials applied in the liquid hydrogen temperature range,such as higher insulation performance and flame retar-dancy.A calculation model for the heat flux of multi-layer insulation materials is established based on the layer by layer cal-culation method.Three commonly used layers of insulation materials,namely 40 layers,60 layers,and 70 layers,are select-ed for testing and calculating their heat flux.The effects of layer density,cold and hot boundary conditions on the heat flux of multi-layer insulation materials are analyzed.Finally,the impact of the arrangement of multi-layer insulation materials on in-sulation performance is analyzed through genetic algorithm,and an optimized arrangement method for insulation materials in the liquid hydrogen temperature range is obtained.This arrangement method can reduce the heat flux by 10.63%compared to the equal density multi-layer insulation material arrangement method.
NETL
NSTL
万方数据
维普
