Laurent FALLET - ASI41 THe « Space Elevator » concept.
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Transcript of Laurent FALLET - ASI41 THe « Space Elevator » concept.
Laurent FALLET - ASI42
Overview
L Description of the systemL TechnologyL InfrastructureL RisksL Conclusion
What is a « space elevator » ?
L Physical connection from Earth to the geostationary Earth orbit
L Objectivef Transport
peoplef Payloadsf Powerf Gasesf …
A more precise look
L Different partsf Geostationary
transfer stationf Base stationf Electromagnetic
vehiclesf Counterweightf Spheres
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Issues
L Not feasible todayL Highest structure : 630 meters
highL Advantages
f easyf cheap
L Not really a new idea
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TechnologyL Materials
f gaphite epoxy compositea used in aerospacea not strong enough
f carbon nanotubesa 100 times stronger than steela not producible yet
f Tests on the ISS
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Infrastructure
L Total length : 144 000 kmf Earth-moon : 385 000 km
L Tower on earthL Propulsion
f mechanical : 12 days of travelf electromagnetic : 10 hours
Funny idea
L Launch archf Tall towersf 15 km highf Electromagnetic
rail
L Propel vehicles nearly out of the Earth atmosphere
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Let’s summarize
L 24 hour orbitL Platform on EarthL Space elevator vehiclesL Structure made of nanotubes
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Risks
L What about collisions?f asteroidsf space debrisf …
L Maintenance on the elevator
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Conclusion
L A not so far futuref 20 years ?
L Main objective: profitsL A lot more to say about
f safety, environment…
L A great idea to dream about