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The first vacuum tubes were proposed almost 200 years ago, when self propelled machines were impractical. Sometimes ancient solutions, combined with modern advancements can provide significant reductions in energy requirements.
Eliminating aero drag completely, combined with friction free maglev tech means you can now apply linear motors for propulsion with the ultimate pulse and glide. Power requirements are basically close to 0 when you consider the energy required for acceleration is recovered decelerating the projectile at the end of it's journey. Both acceleration and deceleration must be controlled to prevent the g forces from destroying the human cargo.
regards
mech
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