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激光定向能推进 星际航行新选择 - 站长搜索
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激光定向能推进 星际航行新选择

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2015-06-25 08:30:05 转载来源: 网络整理/侵权必删

据国外媒体报道,恒星际航行是未来人类需要面对的发展瓶颈,如果我们能够实现恒星际航行,就能够实现太阳系之外的殖民。不过恒星际航行需要先进的动力系统,来自加州大学圣塔芭芭拉分校物理学教授菲利普-鲁宾构想了一种定向能推进系统,利用激光驱动航天器,前往距离太阳系最近的半人马座阿尔法星

据国外媒体报道,恒星际航行是未来人类需要面对的发展瓶颈,如果我们能够实现恒星际航行,就能够实现太阳系之外的殖民。不过恒星际航行需要先进的动力系统,来自加州大学圣塔芭芭拉分校物理学教授菲利普-鲁宾构想了一种定向推进系统,利用激光驱动航天器,前往距离太阳系最近的半人马座阿尔法星。定向能驱动的速度还挺快,20年之内就能够抵达。

利用激光作为航天器动力的想法已经获得美国宇航局项目资助,这是一个潜在的由科幻小说变成现实的科学技术。美国宇航局前不久确定了15个先进创新概念技术,旨在让科幻变成现实,激光定向能驱动就是其中一例。菲利普-鲁宾认为人类所面临的重大挑战就是研发出先进的动力系统,来推动我们的探测器,这是进行星际航行的重要一步。

当然菲利普-鲁宾设想的定向能推进系统需要极低的出发质量,也就是说该技术适合用于微型航天器,这样激光定向能才能发挥出作用。加州大学之所以构想出利用激光定向能推进的航天器,主要原因在于前往邻近的恒星系统可能不需要庞大的宇宙飞船,微型探测器更适合深空任务,而且能够在20年内抵达半人马座阿尔法星。

激光光子驱动技术产生的速度远远超过目前可以实现的动力形式,甚至能够接近相对论速度。激光光子驱动还能够用于火星旅行,我们能够在短时间内抵达火箭。在去年春天于意大利举行的行星防御会议上,加州大学圣巴巴拉分校展示了定向能摧毁小行星的技术,能够适用于各种直径的来袭小行星。

标签: 激光 定向 推进 星际 航行 新选择 选择


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