Damage And Protection Characteristics Of Stuffed Sheilds Against High Speed Oblique Impact Of Space Debris

Since the 20 th century,space research has flourished,and the number of space debris has continued to increase.The threat of space debris to the safety of spacecraft on the orbit has become increasingly serious.For the protection of spacecraft against space debris,a variety of protection structure designes have been proposed in the project.The fiber cloth stuffed sheilds is one of the important forms of protection and has been widely used.Oblique impact is the main form of space debris impact.It is of great engineering significance to study it.In order to improve the spacecraft’s impact resistance to millimeter-level space debris,the impact limit characteristics of The fiber cloth stuffed sheilds were studied,and the ballistic deflection characteristics of the impacted particles in the collision event were analyzed.Finally,The fiber cloth stuffed sheilds was under high-speed oblique impact.To evaluate the damage and protection characteristics,a series of hypervelocity impact tests were conducted on the ground to study the impact of space debris impact on the impact characteristics of The fiber cloth stuffed sheilds.This paper focuses on the application of space debris high-speed impact spacecraft protective structure as an application background,and conducts an experimental study on the oblique impact behavior of The fiber cloth stuffed sheilds.Firstly,a ground simulated impact experiment was carried out with a secondary light gas gun.For two types of oblique impact angles,millimeter-grade aluminum ball projectiles of four diameters were selected to study the impact of different diameters of aluminum ball projectiles at different angles and high-velocity oblique impacts on Kevlar fiber cloths.The limit speed of impact at critical failure of the protective structure.Secondly,on the basis of the impact limit characteristic data of the protective structure of the aluminum ball projectile impacted by the Kevlar fiber cloth at high speed,the empirical formula of the impact limit has been used for reference and the paper is applicable to The fiber cloth stuffed sheilds.Correction formula of impact limit empirical formula for The fiber cloth stuffed sheilds.Finally,the ballistic deflection and its influencing factors of the projectile during high-velocity oblique impact on the protective structure of the fiber cloth are analyzed.The damage characteristics of the front plate,the fiber layer and the back plate under the high-speed oblique impact of the aluminum ball projectile are studied to further comprehensiveness.Evaluation of the high-speed impact protection characteristics of The fiber cloth stuffed sheilds provided the basis.