日本公布太空电梯计划 二零五零年或可乘电梯上太空

日本公布太空电梯计划 二零五零年或可乘电梯上太空



日本时报二月廿三日消息 乘电梯，可以直接上太空，这是不是天方夜谭？日本大林建设公司雄心万丈，公布了建造“太空电梯”计划，希望到了二零五零年，人们不需要搭乘太空船，只要搭电梯就能够圆太空梦。

据日本《读卖新闻》报道，大林公司所要建造的太空电梯并不是由一般的钢铁制造的，而是由比钢铁强二十倍的碳纤维“纳米碳管”做成。此一太空电梯可供30人乘坐，预计要花费一个星期的时间，才能抵达高度达三万六千公里的太空站。

其实，太空电梯的概念早已出现在科幻小说里。一九九零年代，人类发现奈米碳管之后，大林公司判断，太空电梯不再是遥不可及的梦想，其他组织如美国宇航局也开始进行类似研究。

大林公司所设计的太空电梯缆线，全长为地球到月球距离的大约四分之一，这相等于九万六千公里。电梯缆线固定在地球地表一个定点上，然后利用地球自转的离心力抛出去，另一头系着一个起平衡作用的铅坠。电梯电缆的中间部位是一个太空站，该太空站内将建设实验设施及居住的空间。

电梯将以两百公里时速上下，单程需要花费七天半。太空站周边设施将利用太阳能发电，发电设施同时还会向地面输送电力。

大林公司表示，目前公司面对的挑战是能否以低成本来大规模生产奈米碳管，以及全球各地的相关组织是否愿意携手合作制造这个全球第一个“太空电梯”。

大林公司一名发言人说：“目前，我们还无法估计这项计划的成本。不过，我们会一步一步地进行计划，确保太空电梯计划不会只是一场梦。”

其实，美国科学家二零零四年就提出了“太空电梯”的概念，后来日本和俄罗斯科学家也就如何设计“太空电梯”提出了初步方案。

专家曾经指出，目前纳米碳管还只是毫米级制品，距实用差距甚远；向三万多公里外的太空发射各种电梯建设材料花费巨大；这种“太空电梯”一旦因严重事故而崩塌，空中和地面的损失也将十分惊人。专家们认为，面对这些难题，“太空电梯”短期内恐难开工。（来源：联合早报）

来源：
http://discovery.163.com/12/0223/09/7QUGMFBC000125LI.html

Obayashi planning nanotube 'space elevator' in 2050

Kyodo

Thursday, Feb. 23, 2012

A space trip using an elevator may come true in 2050, as general contractor Obayashi Corp. is planning to construct a "space elevator" stretching 96,000 km above the ground.

While the concept of such an elevator has been described in science fiction novels, the construction has become possible after the 1991 discovery of carbon nanotube, a lightweight material more than 20 times stronger than steel, the company said.

Under the plan announced this week, the company will build an orbital station at an altitude of 36,000 km, a final destination for space travelers and housing experimental and development facilities utilizing the space environment.

A six-car elevator, expected to travel at a speed of 200 kph, will be capable of carrying 30 people and will take about seven and a half days to arrive at the orbital station.

According to the company, construction work will start around 2025. A rocket will be launched to transport two reeled cables using carbon nanotube and other materials to an altitude of about 300 km, where a space ship will be assembled.

The space ship will unreel the cables toward Earth, while continue soaring to the summit of 96,000 km, which is about one-quarter the distance from Earth to the moon, Obayashi said.

Then the cables will be reinforced from the ground using elevator cars, which will ascend to the summit. The reinforcement work will be conducted 510 times, the company said.

The elevator will be powered partly by electricity generated by solar power from space, the company said.

The company at present cannot calculate how much money would be needed to construct the space elevator and there would be some hurdles, such as where to build it, said Satomi Katsuyama, leader of the company's space elevator project.

"But we'd like to realize the project, as it will greatly save on costs for space development in the future," she said.

来源：
http://www.japantimes.co.jp/text/nn20120223a6.html

---

相关帖子
• 【图】罗马尼亚航空航天局公布将在二零二五年实现载人航天梦想计划
• 伊朗将进行二零一二年第二届伊朗国际微纳卫星比赛
• 【图】苏联运载火箭总设计师电子版传记第四册『火箭与人：月球竞赛』于二月十五日发行• 委内瑞拉公布：二零三零年实现登火星计划
• 修正主义的科幻：如果第二次世界大战「大德意志帝国」配合「大日本帝国」【图】
• 西方科普：《龟兔太空竞赛》

---

---

日本公布太空电梯计划 二零五零年或可乘电梯上太空



日本时报二月廿三日消息 乘电梯，可以直接上太空，这是不是天方夜谭？日本大林建设公司雄心万丈，公布了建造“太空电梯”计划，希望到了二零五零年，人们不需要搭乘太空船，只要搭电梯就能够圆太空梦。

据日本《读卖新闻》报道，大林公司所要建造的太空电梯并不是由一般的钢铁制造的，而是由比钢铁强二十倍的碳纤维“纳米碳管”做成。此一太空电梯可供30人乘坐，预计要花费一个星期的时间，才能抵达高度达三万六千公里的太空站。

其实，太空电梯的概念早已出现在科幻小说里。一九九零年代，人类发现奈米碳管之后，大林公司判断，太空电梯不再是遥不可及的梦想，其他组织如美国宇航局也开始进行类似研究。

大林公司所设计的太空电梯缆线，全长为地球到月球距离的大约四分之一，这相等于九万六千公里。电梯缆线固定在地球地表一个定点上，然后利用地球自转的离心力抛出去，另一头系着一个起平衡作用的铅坠。电梯电缆的中间部位是一个太空站，该太空站内将建设实验设施及居住的空间。

电梯将以两百公里时速上下，单程需要花费七天半。太空站周边设施将利用太阳能发电，发电设施同时还会向地面输送电力。

大林公司表示，目前公司面对的挑战是能否以低成本来大规模生产奈米碳管，以及全球各地的相关组织是否愿意携手合作制造这个全球第一个“太空电梯”。

大林公司一名发言人说：“目前，我们还无法估计这项计划的成本。不过，我们会一步一步地进行计划，确保太空电梯计划不会只是一场梦。”

其实，美国科学家二零零四年就提出了“太空电梯”的概念，后来日本和俄罗斯科学家也就如何设计“太空电梯”提出了初步方案。

专家曾经指出，目前纳米碳管还只是毫米级制品，距实用差距甚远；向三万多公里外的太空发射各种电梯建设材料花费巨大；这种“太空电梯”一旦因严重事故而崩塌，空中和地面的损失也将十分惊人。专家们认为，面对这些难题，“太空电梯”短期内恐难开工。（来源：联合早报）

来源：
http://discovery.163.com/12/0223/09/7QUGMFBC000125LI.html

Obayashi planning nanotube 'space elevator' in 2050

Kyodo

Thursday, Feb. 23, 2012

A space trip using an elevator may come true in 2050, as general contractor Obayashi Corp. is planning to construct a "space elevator" stretching 96,000 km above the ground.

While the concept of such an elevator has been described in science fiction novels, the construction has become possible after the 1991 discovery of carbon nanotube, a lightweight material more than 20 times stronger than steel, the company said.

Under the plan announced this week, the company will build an orbital station at an altitude of 36,000 km, a final destination for space travelers and housing experimental and development facilities utilizing the space environment.

A six-car elevator, expected to travel at a speed of 200 kph, will be capable of carrying 30 people and will take about seven and a half days to arrive at the orbital station.

According to the company, construction work will start around 2025. A rocket will be launched to transport two reeled cables using carbon nanotube and other materials to an altitude of about 300 km, where a space ship will be assembled.

The space ship will unreel the cables toward Earth, while continue soaring to the summit of 96,000 km, which is about one-quarter the distance from Earth to the moon, Obayashi said.

Then the cables will be reinforced from the ground using elevator cars, which will ascend to the summit. The reinforcement work will be conducted 510 times, the company said.

The elevator will be powered partly by electricity generated by solar power from space, the company said.

The company at present cannot calculate how much money would be needed to construct the space elevator and there would be some hurdles, such as where to build it, said Satomi Katsuyama, leader of the company's space elevator project.

"But we'd like to realize the project, as it will greatly save on costs for space development in the future," she said.

来源：
http://www.japantimes.co.jp/text/nn20120223a6.html

---

相关帖子
• 【图】罗马尼亚航空航天局公布将在二零二五年实现载人航天梦想计划
• 伊朗将进行二零一二年第二届伊朗国际微纳卫星比赛
• 【图】苏联运载火箭总设计师电子版传记第四册『火箭与人：月球竞赛』于二月十五日发行• 委内瑞拉公布：二零三零年实现登火星计划
• 修正主义的科幻：如果第二次世界大战「大德意志帝国」配合「大日本帝国」【图】
• 西方科普：《龟兔太空竞赛》

---

---