Wednesday, 5 July 2017

Space Elevator - the Future of Space Travel?

Some space fanatics might know this idea first proposed by Konstantin Tsiolkosky at 1895. He proposed the idea of a tower reaching geosynchronous orbit. However to make such an elevator we would need a material that is both lighter and stronger than anything we have right now. However the developments with nanotechnologies have allowed for new materials to be created such as Carbon Nanotubes which might just be strong and light enough.
Diagram of a space elevator.  At the bottom of the tall diagram is the Earth as viewed from high above the North Pole.  About six earth-radii above the Earth an arc is drawn with the same center as the Earth.  The arc  depicts the level of geosynchronous orbit.  About twice as high as the arc and directly above the Earth's center, a counterweight is depicted by a small square.  A line depicting the space elevator's cable connects the counterweight to the equator directly below it.  The system's center of mass is described as above the level of geosynchronous orbit.  The center of mass is shown roughly to be about a quarter of the way up from the geosynchronous arc to the counterweight.  The bottom of the cable is indicated to be anchored at the equator.  A climber is depicted by a small rounded square.  The climber is shown climbing the cable about one third of the way from the ground to the arc. Another note indicates that the cable rotates along with the Earth's daily rotation, and remains vertical.

To the right is a diagram showing the system recently proposed. The climber is the elevator with the idea of centrifugal force used to keep the space elevator stable.

The benefit of having a Space Elevator is quite simple. Spaceships launched at that height would already be in space and therefore would not have to escape earth's gravitational field. Due to this they would have more fuel and would not slow down as they would be in a vacuum.

The main reason why the building of this hasnt even started is again simply the price. Due to carbon nanotubes being a new technology, it is quite expensive and to build something on a magnitude of a space elevator would literally cost an unimaginable amount therefore for now there is not enough support but I honestly see this happening quite soon.

In fact, a Japanese company actually plans to have it built by 2050. Obayashi Corp has quite the inspiring goal to have it built soon and I wish them all the luck in succeeding.

Below is another picture detailing the concept behind it. May we all one day be able to take an elevator to space.

This is Mehul, Signing out.Image result for space elevator

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