Latest By
Category:
Armor
Artificial
Intelligence
Biology
Clothing
Communication
Computers
Culture
Data Storage
Displays
Engineering
Entertainment
Food
Input Devices
Lifestyle
Living Space
Manufacturing
Material
Media
Medical
Miscellaneous
Robotics
Security
Space Tech
Spacecraft
Surveillance
Transportation
Travel
Vehicle
Virtual
Person
Warfare
Weapon
Work
 |
Comments on Rotating Space Elevator
Striking concept may sound similar to sfnal technologies used by Forward and Pohl. (Read
the complete story)
| "Don't forget such variants as the ED Tether, which is much shorter, and not actually connected to the ground. It orbits, while also spinning around its own epicenter, and then uses interaction with the ionosphere to boost itself slowly towards higher orbit. This one would be placed in LEO, reaching down just far enough that a ship designed to fly like a plane could fly up, match velocities with the lower end of it as it spins by, and hitch a ride up to orbit. You then need to either wait a while, as the tether slowly boosts itself back up to orbit, or use it to deorbit a vehicle that wants to come back down, before you can risk using it to boost another vehicle to orbit, but, it is a useful and relatively cheap alternative.
http://www.tethers.com/EDTethers.html
(And I thought that this use for "untethered skyhooks" was described in Pournelle's book "A Step Further Out", which is a collection of lectures he gave back in the late 70's and early 80's)" (Ashley 5/27/2009 7:04:15 AM) |
| "Ah, found what this site is calling the ones Pournelle described: Bolos or Rotovators.
http://www.tethers.com/MXTethers.html
So it looks like this concept has been around since at least the 80's, if not earlier, and the ED variants have been around since the late 80's." (Ashley 5/27/2009 7:15:47 AM) |
| "The Lofstrom launch loop is a separate concept to this. This idea spins the tether link you would a skipping tope, but vertically (with one end attached to the ground and one to the geostationary anchor). The launch loop spins a loop along it's length, using the centrifugal force to widen the loop (lifting it up, but not out of the atmosphere).
Rotovators/skyhooks are again different, with the tether remaining straight and rotating around it's centre, alternately dipping into the atmosphere at it's ends.
As far as I can tell, this is a truly new concept. I'd hate to think what additional requirements it puts on the already high required tether strength though. I wonder how the energy required to lift loads is compensated for (I assume that lifting a weight up the elevator slows it's rotation), unless there is an odd resonance affect or it somehow works akin to gravitational slingshotting and borrows momentum from the Earth instead of from the tether." ( 5/27/2009 7:49:41 AM) |
| "Yes, a Lofstrom loop is a separate concept.
http://en.wikipedia.org/wiki/Lofstrom_launch_loop" (Winchell Chung 5/27/2009 1:33:18 PM) |
| "The launcher in Forward's DRAGON'S EGG was more like a space fountain
http://en.wikipedia.org/wiki/Space_fountain" (Winchell Chung 5/27/2009 1:33:49 PM) |
| "I'm not clear on this term 'slide' ..." (um 5/30/2009 10:46:05 PM) |
| "How do you spin this loop and the most important question is: which force drives you (or a payload) up from the earth against gravity without an extra kaunching force? The stirring coffee cup idea is just nonsense. It just drags down to earth the counterweight in space. Or?" (Arno Schrauwers 6/9/2009 1:31:12 AM) |
Get more information on Rotating Space Elevator
Leave a comment:
Please send your comments to @technovelgy and I'll post them. Thanks!
More Articles
Health Kiosk Has No Human Doctor
'The electronic body analyzer had been developed...'
Meta's Horizon Studio's Unique Avatars From Text Prompts
'Looks like she has bought the Avatar Construction Set and put together her own...'
VaMEx Biomimetic Mars Robot Inspired By Skink
'Across the ground something small and metallic came, flashing in the dull sunlight of midday.'
NEO Brain Computer Interface (BCI)
'The remains of the lace took on the rough shape of a brain...'
Did Frank Herbert Predict Bistable Displays Like E-Ink?
'A broken circle with arrows pointing to a right-hand flow appeared in the chalf.'
Monolith One Giant Industrial Metal 3D-printer
'The object seemed melted together like wax — nothing was distinguishable.'
'Mooncrete' Lunar Regolith Concrete (LRC)
'And here they began to build...'
China's 'Magpie Drone' Ornithopter
'Midges have many capabilities. To the untrained eye, they look like sparrows.'
MAI-Voice-2 Microsoft Text-To-Speech
'I made disks of my own voice to the number of five hundred very carefully chosen words.'
Tumblin' Tumbleweed Rovers To Eplore Mars
'His sensors out and working, and the whirring of the tape that sucked up sight and sound and shape and smell and form...'
Tentacled Robot Captures Space Debris
Preventing annoying space debris build-up.
Prufrock-MB2 Ready In Nashville
'It sounds to me as though you had invented a kind of metal earthworm.'
DIY Robotic Content Farming
'The chief wheeled to the master machine and pressed a button.'
Reflect Orbital Sunlight On Demand
'I don't have to tell you about the seven two-mile-diameter orbital mirrors that circulate around the satellite, making it habitable.'
The Amazing Lightfoot Electric Scooter With Solar Assist
'The steel tortoise gave MacKinnon a feeling of Crusoe- like independence.'
Fully Electric, Fully Automated Vegetable‑growing Agribots
'...then back to their work, though little enough it was on these automatic cultivators.'
Vero Robotic Dog With Vacuum Cleaner Feet
'Out of warrens in the wall, tiny robot mice darted.'
AI Operates An Excavator
'So far as I could see, the thing was without a directing Martian at all.'
US Army IBEX Exoskeleton Walks Troops Out Of Danger
'The suit stands up and starts walking, gripping me round the calves and waist, taking the bulk of my weight off my throbbing feet.'
Boy Makes Biomimetic Turtle Robot
't came out into plain view. Darkington glimpsed a slim body and six short legs of articulated dull metal.'
