lremptasts4b

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Although the transmission of energy across long

distances is generally considered the domain of electrical

conductors and electromagnetic radiation beams, in thefield of very long space transportation structures it may

be worthwhile to re-visit electromechanical energy

transmission distribution means.

The form of delivery of transportation energy along a

long transportation structure needs to be chosen in overall

context with its application, such as the job of cleanly

enabling a high technology worldwide civilizationthrough adequate access to GEO space resources, all

done carefully and quickly enough before our

bourgeoning haphazard civilization can destroy itself.


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A chosen transportation system has to be up to doing theoverall job providing for civilizations near future needs:in more detail this overall transportation task

contextually can include: Putting enough Solar Power Satellites into GEO to cleanly

electrically power the energy hungry high tech civilizationnow rapidly expanding worldwide, saving petrochemicals

Putting mass-spectrometer type total recycling plants intoGEO to process the toxic materials produced by industryworldwide, and ability to lift those waste materials up forprocessing and bring the clean materials back down

Building large scale spaceports in GEO and to lift the

components for the immense spacecraft up to them forcommerce to the Moon and other places in the Solar System

Building a few Stanford Torus Space Settlements in GEO,along with enough sawdust reinforced water ice to providetheir passive shielding into GEO for R&D of such cities


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Transportation energy is one key to success: theactual energy given to payload by lifting it up fromthe ground and put into GEO is only 15.7 kWh/kg,

$1.57 per kg at $0.10 per kWh

Note that this is a little less than the energy given toachieve escape velocity, 17.4 kWh/kg

But also using energy to support the payload whileit is slowly traversing up the gravitational field inbetween, can add a huge amount to the total energycost for the lift

The delivery energy cost to GEO could be greatlyreduced by using a transportation structure all alongthe way so as to support the payload while it isbeing lifted


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The transportation structure itself can be configuredto distribute the transportation energy along itself

to the payload all along the way Lets explore how perhaps payload can be lifted

by attaching to part of the structure that continuouslycirculates between the transportation terminals

by tapping into the momentum of rapidly movingupward bound electric armature mass passing thepayload carrying vehicles, overall a kind ofsynchronous electrical motor

by higher velocity mass bouncing off its base like afountain

by tapping wave motion energy propagating along the

structure


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The means of support of a transportation structure

control its shape and the options for distributing

energy along the structure. Two ways to support atransportation structure bridging planetary surface

and geosynchronous orbit include:

By an anchored tether being swung around by the

planets daily rotation, supported by the centripetal forceon the tethered mass beyond GEO

By an eccentrically shaped hoop around the planet, its

internal mass moving around sufficiently faster than

orbital transfer velocity to generate distributed outward

centripetal force to balance the weight of the non-

rotating part of the hoop with its live loads


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QuickTime and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Payload can be lifted and lowered by attaching to part

of a structure that continuously circulates between the

transportation terminals


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A passively shielded lift version for personnel andother radiation-intolerant payload could use a

relatively heavy cargo lift container attached to thetether ribbon, utilizing several feet thickness ofsawdust-reinforced water ice

This would minimize environmental damage in

catastrophic case of the container falling into theatmosphere.

The significant added shielding mass would reduce theoverall throughput of payload.

It would also require bi-directional movement of thetether loop, along with starting and stopping the tetherbelt when the shielded cargo container arrives at groundand GEO terminals.


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Another basic way for distributing transportation

energy along itself is by providing paths for high

velocity circulating mass streams along the structure,that electromagnetically share part of their upward

moving momentum to lift vehicles riding the

structure.

Along linear anchored counterweight- supported tether

structures.

Along planetary loop structures, where circulating mass

also uses its outward centrifugal force of the loop, tobalance the weight of the stationary part of the structure.

Along fountain type supportive or lifting structures.


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Payload can be lifted by tapping into the momentum of

rapidly moving upward bound mass passing the payload

carrying vehicles along a linear tether structure

High velocity

upward moving

armatures

inductivelydrag vehicles

upward to

space, or lower

them gently

back to earth




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Payload can be lifted by tapping into the momentum of electric

motor armature mass continuously moving at 10s of km/s

along inductive maglev tracks embedded in the motor stator

along a hoop structure around a planetary body

Electric motor

armatures distribute lift

energy to vehicles Armatures distribute

servoposition energy to

the structure

Armatures generate

outward centripetalforce to balance weight

of structure and

vehicles


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Schematic of fountain-like support or lift where

upward high velocity mass bounces off vehicle,

imparting upward reaction vehicle lift force




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Principle of energy transmission by wave motion, by

electromechanical vibration of the tether at one end, and

extraction of wave motion energy along the way to lift cargo


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Summary

Very long space transportation structures do have

potential for distributing electromechanicaltransportation energy along themselves

As a circulating conveyor belt tether

As a linear track structure with sliding high velocity

mass streams to drag vehicles upward

As a hoop track structure around a planet, the electricmotors enclosed high velocity armature circulatingmass both lifts its vehicles, and the outwardcentrifugal force distributes structural weight support

As a guide for wave motion along the structure

Jim Cline www.kestsgeo.com www.escalatorhi.com

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