The sail can only change its attitude by about 1 degree per day, Tsuda says, and it gets less effective the faster the sail spins.

津田说，太阳反射器变换姿态每天大约只有一度，而且转动越快效率越差。

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"With this we can control both the orbit and the attitude using only sunlight," says Yuichi Tsuda of the Japan Aerospace Exploration Agency.

日本宇宙开发机构的津田雄一说：“借助智能玻璃，我们只要利用太阳光就可既控制飞行轨道又控制飞行姿态。”

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The name of the spacecraft alludes to Icarus, the figure from Greek mythology who flew too close to the sun and fell into the sea, but Tsuda promised that "this Ikaros will not fly into the sun".

该空间航天器的名字Ikaros刚好暗合希腊神话人物伊卡洛斯（Icarus），他使用蜡和羽毛造的翼逃离克里特岛时，因飞得太高，靠太阳太近，双翼上的蜡融化而跌落海中。 不过津田佑一承诺这个Ikaros将不会飞入太阳。

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