SPACE TRANSPORTATION SYSTEM SPACE ELEVATOR Made by: Vishwajit Sunil Kathe Mechanical engineering 3rd year Seat No. T120620894 … building our future
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SPACE TRANSPORTATION SYSTEM
SPACE ELEVATOR
Made by:Vishwajit Sunil
KatheMechanical
engineering3rd yearSeat No.
T120620894
… building our future
Contents
How could we build Space elevator ?
The
Ribbon(Tether)
The Anchors
The Climbers
Counter weight
There are Five Major Sections
What is Anchor ?
Anchor station is a mobile, ocean-going platform identical to ones used in oil drilling
Anchor is located in eastern equatorial pacific Weather and mobility are primary factors
What is Climbers
Climbers built with current satellite technology
Drive system built with DC electric motors Photovoltaic array (Ga As or Si) receives power
from Earth 7-ton climbers carry 13-ton payloads Climbers ascend at 200 km/hour 8 day trip from Earth to geosynchronous
altitude Initial 200 climbers used to build ribbon
Comparison between CNTs & Metal wire Property Single Walled
NanotubesMetal wires
Tensile Strength 45 billion Pascal High strength steel alloys break at about 2 billon Pascal
Resilience Can be bent at large angles and re-straightened without damage
Metals and carbon fibers fracture at grain boundaries
Temperature stability
Stable up to 2800 degrees in vacuum, 750 degrees in air
Metal wire in microchips melt at 600 to 1000 degrees C
What is need to Build space elevator ?
What is Ribbon ?
1. Ribbon is long cable of light ,flexible , Ultra Strong Metal which provides grip
for climber2. Ribbon means tether cable
3. Tether is made of carbon nanotubes4. Tether which holds two components one
is anchor and counter weight 5. It is a long ribbon of carbon nanotubes
that would be wound into a spool that would be launched into the orbit.
6. The cable made of a material with a large tensile strength/density ratio
Why we use Ribbon carbon nanotubes ? Reason to use ribbon carbon nanotubes
because of its properties which can with stand or handle extremely bad conditions
Example of Conditions are atmospheric changes
Carbon nanotubes are extremely tiny rolled-up, three dimensional carbon tubes, made of a hexagonal graphite lattice .
They are at least 1000 times stronger than steel rods of the same size and are one-sixth the weight of steel
They are as flexible as steel. They are categorized as single and multi
walled tubes
What is Advantages ? Low operations costs - US$250/kg to LEO, GEO,
Moon, Mars, Venus or the asteroid belts No payload envelope restrictions No launch vibrations Safe access to space - no explosive propellants or
dangerous launch or re-entry forces Easily expandable to large systems or multiple
systems Easily implemented at many solar system
locations
What is Applications ?
Solar power satellites - economical, clean power for use on Earth
Solar System Exploration - colonization and full development of the moon, Mars and Earth orbit
Telecommunications - enables extremely high performance systems
Conclusion The space elevator is revolutionary eath
to space transportation system that enable space exploration
High transmission in telecommunication Aim is to create space elevator as a free
system
THANK YOU SO MUCH
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