Hypervelocity Impact Phenomena at Low Temperatures using a Cryostat
- Paper number
IAC-05-B6.4.09
- Author
Dr. Kiyonobu Ohtani, Tohoku University, Japan
- Coauthor
Mr. Daijyu Numata, Tohoku University, Japan
- Coauthor
Mr. Takamasa Kikuchi, Tohoku University, Japan
- Coauthor
Prof. Mingyu Sun, Tohoku University, Japan
- Coauthor
Prof. Kazuyoshi Takayama, Tohoku University, Japan
- Year
2005
- Abstract
For decades, space debris impact phenomena have been investigated to optimize the design of space debris bumper shields. However, the mechanism of impacts accompanies the fracture and the ablation of these materials, which are yet thoroughly understood. Damage estimations against main walls depend on the formation process of debris clouds and the process is the most important primary approach. To understand the mechanism of hypervelocity impact (HVI), a time resolved observation is also worthwhile to perform. This paper reports, firstly, a cooling experiment of test plate using a LN2 flow-type cryostat, and results of two-stage light gas gun experiments of basic data acquisition for space debris bumper shield research. Primary HVI tests were carried out to visualize projectile impingements on Whipple bumper shields made of aluminum using high-speed camera. And impacts of spherical projectile against bumper shields and primary wall were numerically simulated by AUTODYN which was valiidated by comparison with experiments.
- Abstract document
- Manuscript document
IAC-05-B6.4.09.pdf (🔒 authorized access only).
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