著者

片山 雅之 外本 伸治 麻生 茂 平山 寛

出版者

一般社団法人 日本航空宇宙学会

雑誌

航空宇宙技術 (ISSN:18840477)

巻号頁・発行日

vol.19, pp.47-55, 2020 (Released:2020-03-14)

参考文献数

16

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The effect of aerodynamic drag on loss of the velocity of a microsatellite on LEO is investigated and compared with the on-orbit data of two microsatellites, Hodoyoshi-1 of the University of Tokyo and QSAT-EOS of Kyushu University, which were launched in 2014. A new model, which includes the influence of the solar activities on atmospheric density, is introduced in this paper. The results obtained from the model suggest that the effect of solar activity on the atmospheric density has to be considered with the deviation of F10.7 parameter due to the number of sunspots. The model is applied to a microsatellite composed of a cubic main body and a deorbit sail to estimate its altitude change due to aerodynamic drag. The rotation of the satellite is taken into consideration.

著者

波多 英寛 日南川 英明 平山 寛 花田 俊也 藤原 和人 廣江 哲幸

出版者

一般社団法人日本機械学会

雑誌

スペース・エンジニアリング・コンファレンス講演論文集 : Space Engineering Conference (ISSN:09189238)

巻号頁・発行日

vol.2009, no.18, pp.107-110, 2010-01-28

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This study was bursting test of lithium-ion battery using small satellite by overcharge. As a result, the lithium-ion battery exploded by overcharge and confirmed that a flame occurred. The temperature at the time of the bursting was measured, and it was around 150 degrees Celsius. As for the collection fragments, it was measured dimensions, and the distribution of the collection fragments was provided.