Definition of "KESTS"

"KESTS" is the acronym made of the first letters of the phrase "Kinetic Energy Supported Transportation Structure."

That is, a KESTS is a structure which is supported by kinetic energy.

and whose function is to provide transportation.

The location and use could be many places, but the place of usage which is the focus of attention here is between the Earth's surface and orbital altitudes, particularly the high earth orbit that is synchronous with the Earth's rotation, GEO, Geostationary Earth Orbit. The reason is that a low cost transportation up to there, operating continuously, of potentially very high capacity, and powered by electricity, could enable applications built in GEO that would be extremely beneficial to civilization's long term sustainability and the planetary ecosystem, if properly done. If.

A kinetic energy supported structure by definition would include such things as balloons, inflated amusement play gyms, and pressurized fuel tanks for spacecraft launch vehicles. However, a KESTS must specifically also provide the transportation function.

The most efficient form of KESTS explored in most depth on these pages uses kinetic energy as stored in the armature of a rapidly rotating electric motor's armature, which creates an outward centrifugal force by the rotating mass of the armature. The combination of the mass and the velocity provides how much outward force is created by the armature.

In the KESTS configuration sugggested here for use between ground and GEO, "KESTS to GEO", or the more colorful term "Carousel Space Escalator to GEO" the armature is of large perimeter, essentially in the shape of an elliptical orbital transfer trajectory connecting between the radius of the earth's surface, around the planet to the location of GEO, about 6.7 planetary radii. The outward force of the high velocity armature presses against a low friction track structure which actually finalizes the shape of the overal structure with its motor armature, and provides enclosure for the hard vacuum environment required by the armature where it is in the planetary atmosphere. The upward-moving magnetic armature also is used to drag spacecraft up from ground to GEO, so they do not need to carry fuel for the trip. Lowering the spacecraft back to the ground can be done a similar way. Thus this forms a Kinetic Energy Supported Transportation Structure, a KESTS.

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rotating armatures in orbit

An orbit could be completely infilled by a continuous ribbon, including circular and elliptical shaped orbits. If the rotating band is rotating much faster than orbital velocity at its altitude, it can press upward against a non-moving similar shaped structure, providing support for the non-moving structure's mass.