Problems Needing Work
While the spacetethers.com idea seems very doable, it is not yet done.
There are a number of problems that have yet to be solved or
demonstrated. Here is a list of some problems that have to be solved:
- rendezvous of rocket and tether
- tether reliability in the face of junk and micrometeors
- really reusable rocket
- reentry, heat shield and
vehicle shape
- climb or toss getting payload up from end of tether
- tele-robotic devices
- design for bootstrapping - start with smallest possible orbiting part
- thrusters and general control of tether
- danger of broken tether to other satellites
- where to launch from - want an equatorial launch site
- radiation shielding - how much is needed and how heavy this will be
- Do we want an airlaunch? Using an existing or new jet?
Other problems that need work:
- Oxidization/aging of tether in space environment
- EDT - need to really try one out
- EDT on a rotating tether
- Rolling/winding in tether - useful for pumping
- Libration/oscillation along the tether
- Do EDT electrons damage regular tether
- Ballast - need about 30+ times payload
- Spinning up tether and slowing down spin (maybe 20 hours total)
- Drag on tether
- Existing rocket company might not want to help potential competitor
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Copyright (c) 2002, 2003 by Vincent Cate. All rights reserved.