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Express AM4 Russian Satellite : ウィキペディア英語版
Ekspress AM4

Ekspress AM4 was a communications satellite placed into the wrong orbit from a faulty Briz-M rocket stage. This satellite was to be part of the Ekspress series of geostationary communications satellites owned by Russian State Company for Satellite Communications. The satellite was de-orbited on 28 March 2012 into the Pacific Ocean, in spite of efforts of it being used for Antarctic broadband purposes.〔("Second Life for Failed Russian Satellite." ) Retrieved 1 April 2012〕
Although there have been several satellites de-orbited over the years, Ekspress AM4 would have been able to provide broadband services to the Antarctic for the first time.〔("Fiery Death of Wayward Russian Satellite Mourned by Company." ) Retrieved 1 April 2012〕
== Launch ==
The Ekspress AM4 satellite was launched on 18 August 2011 on a Russian Proton rocket from Kazakhstan, which included a Briz-M stage. It was just after launch that the Briz-M stage did not separate from the Ekspress satellite, causing it to fall into the wrong orbit.〔("Repurposing Express-AM4: Mission Possible: Recycling Space Junk into Antarctic Science Treasure." ) Retrieved 1 April 2012〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Ekspress AM4」の詳細全文を読む



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