Evaluation of Dependency of Ejecta due to Hypervelocity Impact on Impact Angle/Temperature and its International Standardization

2016 Fiscal Year Final Research Report

• Project/Area Number: 24360351
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Kyushu Institute of Technology
• Principal Investigator: AKAHOSHI YASUHIRO 九州工業大学, 大学院工学研究院, 教授 (60222519)
• Co-Investigator(Kenkyū-buntansha): 西田 政弘 名古屋工業大学, 工学研究科, 准教授 (60282828)
• Project Period (FY): 2012-04-01 – 2017-03-31
• Keywords: 航空宇宙環境 / 微小宇宙ごみ / 超高速衝突 / 二段式軽ガス銃 / 画像処理

Outline of Final Research Achievements

ISO11227 was published on September 15, 2012, in which hypervelocity impact test procedure on ejecta is specified in the case that small space debris impacts space structures. Around September 2017, systematic review of ISO11227 will start. A purpose of this study is wide spread of ISO11227 as well as oblique impact experiments by considering addition of oblique impact set-up to ISO11227 at this systematic review phase. In section 6.5 of ISO11227, oblique impact tests are recommended at the impact angle of 15, 30, 45, 60 and 75 degree. In the oblique impact tests, ejecta will be also generated and emitted in oblique direction. So then configuration of target and witness plate is important. In this study, two configurations of oblique impact angles smaller than 30 degree and larger than 45 degree are proposed. These configurations will be added to the current ISO11227 after more than two third P-members support this modification under discussion at ISO/TC20/SC14 meeting.

Free Research Field

宇宙工学