光子晶体辐射热防护材料反射特性分析

高超声速飞行器面临强烈的气动加热环境,大量热量累积在蒙皮表面,并通过蒙皮向内部结构传递,对飞行器的安全性能造成严重的威胁.主要从辐射热防护方案出发,针对不同构型的光子晶体材料的晶体排列方式、晶格常数、介电常数、介质球半径及填充比等参数对辐射特性的影响进行分析研究,通过分析表明,光子晶体材料可有效地针对目标波段,提升其反...

The Reflection Characteristics Analyze for Radiation ThermalProtection Based on Photonic Crystal

hypersonic vehicle is facing a strong aerodynamic heating environment. A large amount ofheat accumulates on the skin surface and transfers to the internal structure through the skin , which poses a serious threat to the safety performance of the vehicle. In this paper, starting from the radiationthermal protection scheme , the influence of crystal arrangement , lattice constant, dielectric constant ,radius of dielectric sphere and filling ratio of different configuration of photonic crystal materials onthe radiation characteristics is analyzed. The results show that photonic crystal materials can effectively improve the reflectivity of the target and enhance the radiation thermal protection effect. This workprovides a new design idea for hypersonic surface radiation protection design.