Comparison between tether-type and KESTS-type earth space elevator
conceptual design attributes
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Means of support of structure's weight:
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Tether: Tensile strength of carbon nanotube ribbon matrix.
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Strength to weight ratio critical to usability of material. Brad
Edward's material has density of 1300kg/m3 and tensile working strength of 100 GPa.
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KESTS: Kinetic energy stored within structure.
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Armature mass stream velocity to mass ratio, and ratio of velocity
to orbital velocity ratio, critical to balance of weight of structure
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Delivery of lift energy to elevator/rail vehicles along structure:
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Techniques for emplacing "seed" structure for "bootstrap" construction
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Techniques for bootstrap construction