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''Sundancer'' was the proposed third prototype space habitat intended to be launched by Bigelow Aerospace—and the first human-rated expandable module based on TransHab technology acquired from NASA. It was to have been used to test and confirm systems used in the company's commercial space station efforts during the early 2010s, and if successful, would have formed the first piece of the proposed commercial space station. While ''Sundancer'' had been under construction at the Bigelow plant in North Las Vegas, Nevada,〔 the company announced in July 2011 that ''Sundancer'' had been removed from their station evolution path, and that the BA 330 would become the first production module.〔 ==Spacecraft history and future== Upon its original announcement, ''Sundancer'' was intended to be the fourth module orbited by Bigelow Aerospace. In August 2007, however, it was announced that due to rising space launch costs and the level of success of the first two Bigelow modules launched, the third development module, ''Galaxy'', would not be put into space and the ''Sundancer'' program would be accelerated. The life support and other advanced systems intended for space testing on ''Galaxy'', and potentially the spacecraft itself, would still be built and used for ground testing.〔 ''Sundancer'' was intended for launch aboard the SpaceX Falcon 9 rocket, but a launch date has been continually pushed back. In 2007, it was reported that ''Sundancer'' would be in orbit by 2010, with such a date confirmed by SpaceX.〔〔 By March 2008 this launch slot had slipped to 2011, by 2010 had again slipped to 2014,〔〔 and by July 2011 the ''Sundancer'' had been cancelled such that the BA 330 would become the first production module.〔 ''Sundancer'' was to spend its first six to nine months on-orbit in a checkout configuration to test systems, followed by manned shakedown missions when transport vehicles become available. If these manned missions prove successful, Bigelow plans to use ''Sundancer'' as the starting point of the first commercial space complex. The company intends to launch a combined propulsion bus and central node to dock with ''Sundancer'', followed by two full-size ''BA 330'' modules which would connect to the central node. This station would potentially be followed by several more similar stations.〔〔 , it was estimated that a one-week trip to the complex would be priced at US$7.9 million.〔 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「Sundancer」の詳細全文を読む スポンサード リンク
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