Abstract
An energy efficient, cost effective cryogenic distribution system (up to several miles) has been identified as important for spaceport and in‐space cryogenic systems. The conduction heat loss from the supports that connect the lines cold mass to the warm support structure is ultimately the most serious heat leak after thermal radiation has been minimized. The use of magnetic levitation by permanent magnets and high temperature superconductors provides support without mechanical contact and thus, the conduction part of the heat leak can be reduced to zero. A stop structure is carefully designed to hold the center tube when the system is warm. The novel design will provide the potential of extending many missions by saving cryogens, or reducing the overall launch mass to accomplish a given mission.
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