Scholarlink

In 1952 Les ShepherdLes Shepherd [2] was the first to consider the requirements for interstellar flight. He determined that a spacecraft driven by fusion reactionsFusion reactions with an energy release fraction of \(\alpha =0.0015\) might be able to reach the nearest stars using a cruise velocity of around \(\sim \) 20,000 km/s for a flyby trip time of \(\sim \) 65 years and a rendezvous trip time of \(\sim \) 130 years. This would require a minimum exhaust velocity of \(\sim \) 6,300 km/s, an acceleration of 0.003 m/stextsuperscript-2 and a vehicle mass ratio of \(R=4.9\) . This would also correspond to an engine specific power of around 10 kW/kg. He concluded that: “It would be possible…to construct a vehicle, deriving its power from known nuclear reactions, which would be capable of reaching the nearest stars in a time measured in centuries”.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

History of Research

  • 章节

  • 发表日期：

    2026年

查看全文
  • K F. Long

摘要

In 1952 Les ShepherdLes Shepherd [2] was the first to consider the requirements for interstellar flight. He determined that a spacecraft driven by fusion reactionsFusion reactions with an energy release fraction of \(\alpha =0.0015\) might be able to reach the nearest stars using a cruise velocity of around \(\sim \) 20,000 km/s for a flyby trip time of \(\sim \) 65 years and a rendezvous trip time of \(\sim \) 130 years. This would require a minimum exhaust velocity of \(\sim \) 6,300 km/s, an acceleration of 0.003 m/stextsuperscript-2 and a vehicle mass ratio of \(R=4.9\) . This would also correspond to an engine specific power of around 10 kW/kg. He concluded that: “It would be possible…to construct a vehicle, deriving its power from known nuclear reactions, which would be capable of reaching the nearest stars in a time measured in centuries”.