July 03, 2003

軌道エレベーター計画

このエレベーターは宇宙へ参ります! ついに「Space Elevator」建設へ始動

米LiftPortは、米国宇宙協会(National Space Society)が進めている、地球と宇宙ステーションを結ぶエレベーター「Space Elevator」建設計画への正式な参加を表明した。2018年4月12日が運行開始予定日とアナウンスされている。

ついに軌道エレベーターの計画が現実化した。軌道エレベーターは A.C.クラークのSF小説「楽園の泉」の中で建築されるもので、荒唐無稽なアイデアのように思えるかもしれないが、実は十分な長さのシリコンカーバイドさえ開発できれば、技術的に実現可能なのだ。しかもロケットより圧倒的に効率よくペイロードを軌道上に運ぶことが出来る。人類の本当の宇宙時代は、軌道エレベーターより後から始まるのである。

A.C.クラークは、1945年に通信衛星というアイデアを作品中で発表し、当時はこれも創造の産物と考えられていたが、今日では通信衛星のない世界は考えられない。

軌道エレベーターがいつごろ実現するか?という問いについてクラークは、「誰かがこのアイデアを聞いて笑わなくなってから数えて、50年後」と言ったらしいが、2018年といったら、今からたったの15年後。クラークにとっても嬉しい誤算になるとよいものだ。

果たして、生きているうちに現実的な費用で重力井戸の外側に出て、バスケットボール大の地球を眺めることができるのか? なんとも楽しみな話だ。

関係ないけど、数年前にやったペプシの「2001年宇宙の旅」キャンペーンって、当選者はどうなったのだろう?

Posted by ryo at July 3, 2003 01:42 AM | TrackBack (97)
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