
深宇宙推進
200 km/s は太陽系文明にとって重要な速度しきい値です
太陽系内自由航行は、最初から光速1%を必要としません。

動的ビジュアル層
深宇宙推進 / 長期研究と工学ビジョン.
モジュール 01
速度しきい値
なぜ 100-200 km/s なのか
なぜ 100-200 km/s なのか
モジュール 02
ミッション場景
月面基地、火星輸送、小惑星帯、深宇宙工学
月面基地、火星輸送、小惑星帯、深宇宙工学
モジュール 03
独立経路
地上核融合発電所は宇宙用核融合エンジンではない
地上核融合発電所は宇宙用核融合エンジンではない
ミッション叙事
Why 100-200 km/s is already a meaningful threshold for solar-system civilization
The target is not written as 1% light speed because a great deal of solar-system transport, engineering, and base-support work changes character well below that level.
Velocity threshold
Solve solar-system scale first, then talk about farther relativistic stories
なぜ 100-200 km/s なのか
The 100-200 km/s range already changes the tempo of Mars transit, asteroid-belt supply, lunar-base logistics, and deep-space robotic work. That makes it a more meaningful engineering threshold for this roadmap.
Mission scenarios
Lunar, Martian, asteroid, and deep-space work all need a durable transport layer
月面基地、火星輸送、小惑星帯、深宇宙工学
Solar-system freedom is not a single landing event. It is repeated transport, maintenance, assembly, supply, and return capability. Velocity thresholds determine whether that network becomes routine.
Independent path
A terrestrial fusion plant is not a space fusion engine
地上核融合発電所は宇宙用核融合エンジンではない
Space propulsion must also solve mass, thermal control, radiation, orbital assembly, nozzle design, and life-support constraints. It needs its own aerospace path rather than a direct translation of ground power systems.