A Canadian company has designed a 20km-high tower that would carry astronauts up into space in a giant lift.
The
plans
for a “space elevator” have been approved by the US patent office,
which granted Ontario-based Thoth Technology the rights to a
“pneumatically pressurised structure for location on a planetary
surface”.
The tower would be more than 20 times the height of the
830m-tall Burj Khalifa, current tallest building in the world located in
Dubai.
Thoth Technology said the freestanding structure would
provide a new way to access space that required 30 per cent less fuel
than a ground-launched conventional rocket. It said the tower would
provide secondary functions including wind-energy generation,
communications and tourism.
Canadian space company Thoth Technology said the 20km tower would make flying to outer space like 'taking a passenger jet' (Thoth)
“Astronauts would ascend to 20 km by electrical elevator,” said Dr
Brendan Quine, its inventor. “From the top of the tower, space planes
will launch in a single stage to orbit, returning to the top of the
tower for refueling and reflight.”
Though ascending 20km wouldn’t
strictly take the lift’s passengers directly into outer space –
considered to start around 100km up – it would be beyond the so-called
19km “Armstrong Limit”, the point where atmospheric pressure is so low
that water within the human body starts to boil.
The other
challenge
the tower raises would be how to overcome the effects of wind. Thoth
has proposed the use of inflatable sections and flywheels to provide
what is described in the patent application as “active stabilisation
using a harmonic control strategy”.
Thoth President and CEO,
Caroline Roberts, said the tower, coupled with self-landing rocket
technologies being developed by others, would herald a new era of space
transportation.
She said: “Landing on a barge at sea level is a
great demonstration, but landing at 12 miles above sea level will make
space flight more like taking a passenger jet.”
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