The University of Tokyo
The University of Tokyo
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
The University of Tokyo
Among the environmental tests in the spacecraft developments, an impact test is one of the most difficult tests. When we conduct an impact test, the most reliable method is to conduct an actual environmental test using pyrotechnic devices. However, pyrotechnic devices are so expensive and complicated to store and handle them that it is not practical to use them in each impact test of small satellites and components that have been actively developed in recent years. For the above reason, there is a growing need for facilities that can conduct impact tests instead of the actual environmental test, but the number of non-pyrotechnic test facilities in Japan is far from enough. Therefore, we built a pendulum-type impact test equipment. It was confirmed that the impact test environment of the HIIA rocket and Epsilon rocket was feasible using this impact test equipment, but the SRS value in the high frequency range was found to be overloaded by several thousand G. Regarding its reproducibility, it was confirmed that the variations of the SRS value were suppressed to +/-100G when the impact was applied 10 times. As a basis for improving the performance of the impact test equipment, we verified the possibility of adjusting the SRS value by selecting materials of each part of the equipment. As a result, it was confirmed that the frequency characteristics of the SRS value can be adjusted to some extent by using materials with different hardness. Furthermore, we conducted the impact test of the MCP s using the impact level that satisfies the impact test value of the Epsilon rocket, and we evaluated their impact resistance. As a result, the average value of the life distribution was about 8.1 times and the cumulative failure rate was over 90% when the impact was applied 14 times or more.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
振子式衝撃試験装置の性能評価およびMCPの衝撃耐性評価
AA1930012000.pdf
(11.51MB)
