Research on Neutron Penetration Characteristics of Structural Materials for Near Space Vehicles

Traditional weapon systems and near-space vehicles may face severe intra-atmospheric or extra-atmospheric nuclear explosion environments during combat flight. Nuclear explosions can produce large-scale and comprehensive destructive effects, which bring great challenges to the performance and survival of weapon systems. In the nearby space of tens of kilometers, due to the gradual thinning of the air, the ray particles can travel a considerable distance. Considering the above situation, the neutron radiation penetration rate of the specified material by modeling the aircraft structural material and particle source is given in this research. According to the simulation analysis, the neutron ray penetration rate has nothing to do with the number of neutrons when the thickness of the aircraft structural material remains unchanged. In conclusion, a basis for the subsequent assessment of the neutron radiation environment inside the aircraft is proposed, which can provide guidance for the damage assessment of electronic equipment and the design of anti-nuclear reinforcement.