The latest buzz tickin’ among space engineering camps is that a group of elite engineers from the Seattle based LaserMotive have bagged the prestigious $ 900,000 NASA challenge for building a robotic climber as a space elevator powered from the ground up with a laser. This challenge project is called the Power Beaming Challenge
The rules of this challenge are to build a mechanical climber which is powered by wireless power transmission, notably by LASER, to climb up a vertical cable to a velocity of 3-5 m/s.
Among all the prominent entrants to the challenge, only LaserMotive team was able to achieve 4 times the feat of climbing the 1 km high tether that was dropped from a helicopter with their robotic climber at an amazing speed of about 4 m/s.
History of this Idea !
Before the advent of 20th century did somebody think of flying as feasible task ? Even if it was, it was to be in fantasy stories and fictions. On the same vein, do we have ever thought of going to space without a rocket. Definitely weird ? How could one possibly go without the escape velocity being attained ?
Strange idea this though - building an elevator to zero gravity a.k.a space - this idea first surfaced in the19th century by the father of rocket science, Constantin Tsiolkovsky. He proposed a compressive structure (impressed by Eiffel tower) to be built from bottom up. Some more scientists took some modifications to the idea proposing a top-down approach of delivering a cable from a rocket from the geo-synchronous orbit (say, 35000 km up ).
Latest Advances:
Now the idea is refined by conscious groups who are pursuing the space elevator research. This is how a space elevator is deemed to work - First a stable platform, similar to an oil rig would be built in the sea. Then a rocket would launch a special satellite into space that would position itself in geo-stationary orbit over the platform. This means that the satellite would remain directly over the platform for its entire deployment. Next the satellite would begin to drop a ribbon or tether all the way down to earth. New technologies in nanotechnology are making the development of a light-weight but strong tether possible. Once the tether reached the platform, it would be attached.
So, What makes the cut ?
Some may question the very feasibility of having such an idea and implementing it. Well, though the initial cost of setting things up - for the Geo-stationary satellite as the counter weight, dropping the tether down to earth and fixing it up in here - the cost of launching things to space will be immensely reduced when compared to traditional satellite lauching or reaching space by Rockets.
PS : I am really baffled and taken aback at this very idea that looks like science fiction ; Truly novel and innovative. Wanna end the story with this Einstein’s quote : Ideas Rule the World !!
Large Hadron Collider (LHC) , the largest, the most complex and the most expensive particle accelerator on earth dubbed as the “The God Machine” for its ability to unlock the secrets of this universe is back in action after a hiccup due to an accident that occurred last September.
The second satellite in ESA’s Earth Explorer series – the Soil Moisture and Ocean Salinity (SMOS) mission – and the second demonstration satellite under ESA’s Project for Onboard Autonomy (Proba-2) were launched into orbit last night from northern Russia. The satellites were launched atop a Rockot launch vehicle provided by Eurockot GmbH.

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