home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!cs.utexas.edu!uwm.edu!ogicse!das-news.harvard.edu!cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!evert@CPSnet2.cps.edu
- From: evert@CPSnet2.cps.edu (Mike Evert)
- Newsgroups: sci.space
- Subject: Electric Tethers
- Message-ID: <Bt7H6x.13z.1@cs.cmu.edu>
- Date: 19 Aug 92 00:54:10 GMT
- Article-I.D.: cs.Bt7H6x.13z.1
- Sender: news+@cs.cmu.edu
- Distribution: sci
- Organization: [via International Space University]
- Lines: 41
- Approved: bboard-news_gateway
- X-Added: Forwarded by Space Digest
- Original-Sender: isu@VACATION.VENARI.CS.CMU.EDU
-
- I have a question about the possibilites of an electric tether system
- like that the recent shuttle flight attempted to test.
-
- As I understand it, if a current is put into the tether, then that
- would cause the tether and spacecraft to gain kenetic energy and rise
- to a higher orbit. The opposite will happen if current is drawn from
- the tether. Would the acceleration always be in one direction and its
- reverse only? I don't know if this would be in the direction of orbit
- or perpindicular to magnetic field. Is it possible to use the tether
- for lateral motion?
-
- It seems possible to put a payload into a high orbit at a cheaper cost
- by launching the payload into low orbit. If that payload carried a
- solar powered tether system (or if it could rendevous with one already
- in orbit), then the tether can be used to boost the payload the rest
- of the way for nearly free.
-
- Now if a tether system could accelerate a spacecraft in a lateral
- direction, then you could go anywher in orbit with them. You could
- launch Energyas from CIS at their high lattitudes and use tethers to
- make the orbital corrections needed to send them to FRED or to
- geosync or anywhere else. But alas I don't even know if it is
- possible.
-
- Regardless, I think tethers have such possibilities that the
- government should divert all social program money to their
- development. Well maybe some of that money could also be diverted
- to DCX/DCY, NASP, solar sails and any other super great investment
- opportunities that come our way.
-
- Thank you,
-
- Mike
-
-
- --
- +----------------------------------+---------------------------------------+
- | Mike Evert | "You are helplessly hypnotized. You |
- | Internet: evert@CPSnet2.cps.edu | will believe everything I tell you. |
- | Delphi: LordMike@delphi.com | This quoted message does not exist." |
- +----------------------------------+---------------------------------------+
-