PRELIMINARY STUDY ON CONFIGURATION OF TRIPLE-WALL SHIELD WITH OBLIQUE MIDDLE WALL

摘要

Spacecraft shield configuration is important in protectingrnthe spacecraft from damages caused by small size spacerndebris impact which could not be monitored. Improvingrnthe performance of the shield without increasing itsrnweight and size has been a significant subject in thernspace debris shield research. Based on the fact that thernballistic limit of oblique impact is higher than that ofrnnormal impact, this paper introduces the “N”rnconfiguration to improve the shield performance with thernoblique middle wall. According to the design, the middlernlayer of a triple-wall configuration was placed obliquely.rnThe shield performances of this configuration and arnparallel triple-wall configuration with the same arealrndensity were compared and analyzed by 3D numericalrnsimulation and hypervelocity impact tests. These resultsrnverified the validity of the introduction of oblique middlernwall in improving the shield performance. Thernimprovement is more notable with higher impactrnvelocity.