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Constant acceleration is a proposed form of space travel. It entails that the propulsion system of whatever kind operates continuously with a constant acceleration—for the first half of the journey it constantly pushes the spacecraft towards its destination, and for the last half of the journey it constantly uses backthrust, so that the spaceship arrives at the destination at a standstill.〔See williamhaloupek.hubpages.com/hub/Calculations-for-science-fiction-writers-Space-travel-with-constant-acceleration-nonrelativistic for some example computations.〕 ==Constant-acceleration drives== Constant acceleration is notable for several reasons: *It is a fast form of travel. When ergonomics are considered, they are the fastest form of interplanetary and interstellar travel. *Constant acceleration creates its own artificial gravity to the benefit of passengers, who may thus be spared from having to deal with the effects of microgravity. However, constant acceleration is an inefficient use of fuel and energy, and is not used in existing spaceflight systems. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Space travel using constant acceleration」の詳細全文を読む スポンサード リンク
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