| The world space industry continue to rapid development since entering the 21st century, but its byproducts-"space debris" problem has become more serious, which threats on-orbit spacecraft and astronaut. Under the precondition that existing spacecraft protective structure gradually can't satisfy protection requirement, it is become imperative to use new materials which have better protective performance. This article will reseach the characteristics of basalt fiber woven/aluminium mesh combination protective structure under hypervelocity impact.After the research on several normal protective structures in today's spacecraft, four basalt fiber woven/aluminium mesh combination protective structures that have the same areal mass were desiged. Then the four structures and a typical Whipple structure of aluminium sheet of equal areal mass were tested through hypervelocity impact. The protective performance of each structure was analysed. The results indicate that: first, the characteristics of the four combination protective structures are better than the typical Whipple structure of aluminium sheet; Second,the characteristics of basalt fiber woven/aluminium mesh stuffed structure is slightly better than the other three combination protective structures when the velocity is between 2km/s~3.5km/s; Third, the characteristics of basalt fiber woven/aluminium mesh stuffed structure is much better than the other three combination protective structures when the velocity is between 3.5 km/s~5.5 km/s.Using three-dimensional drawing software CATIA, the geometry models of aluminum mesh and basalt fiber woven were established. Comparing simulations and test results, verify the reliability of numerical simulation. Then analyze the bullet kinetic energy consumption ability of the pure basalt fiber woven, and the relation between the protective characteristics and the placement of basalt fiber woven through numerical simulations. |
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