Hypervelocity Impact Characteristics In Fused Silica Glass
- Paper number
IAC-07-A6.I.09
- Author
Dr. Jiyun Yang, Beijing Institute of Spacecraft Environment Engineering, China
- Coauthor
Dr. Zizheng Gong, China Academy of Space Technology (CAST), China
- Coauthor
Mr. Wenbing Zhang, Beijing Institute of Spacecraft Environment Engineering, China
- Coauthor
Prof. Jingyu Tong, Beijing institute of satellite environment engineering, China
- Coauthor
Prof. Hewei Pang, China Academy of Space Technology (CAST), China
- Year
2007
- Abstract
The hypervelocity impact characteristics in fused silica glass, which is the outermost pane of the windshield as the critical part of the thermal protection system of spacecraft, were studied by a lot of impact experiments with different millimeter diameter projectiles up to the velocity of 7 km/s launched by two stage light-gas-gun facility. As a typical brittle material, the impact features of fused silica glass showed great difference from the ductile material. These impact characteristics were analyzed by all kinds of instruments, and the empirical damage equations were obtained and discussed. The results of numerical simulation were compared with those of experiments and it could be extended to higher hypervelocity region where experiment data are absent.
- Abstract document