home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!ogicse!das-news.harvard.edu!cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!roberts@cmr.ncsl.nist.gov
- From: roberts@cmr.ncsl.nist.gov (John Roberts)
- Newsgroups: sci.space
- Subject: Re: GEO satellites as electrical vehicles
- Message-ID: <Bzz0tA.66.1@cs.cmu.edu>
- Date: 28 Dec 92 13:14:18 GMT
- Article-I.D.: cs.Bzz0tA.66.1
- Sender: news+@cs.cmu.edu
- Distribution: sci
- Organization: National Institute of Standards and Technology formerly National Bureau of Standards
- Lines: 21
- Approved: bboard-news_gateway
- X-Added: Forwarded by Space Digest
- Original-Sender: isu@VACATION.VENARI.CS.CMU.EDU
-
-
- -From: Bruce_Dunn@mindlink.bc.ca (Bruce Dunn)
- -Subject: GEO satellites as electrical vehicles
- -Date: 28 Dec 92 01:10:31 GMT
- -Organization: MIND LINK! - British Columbia, Canada
-
- - An interesting idea. Modern comsats have several kilowatts of power,
- -enough to run an ion or arcjet engine. An electric engine running off a few
- -kilowatts has a mass of only a few kg, so could easily be carried on the
- -vehicle.
- -...
- -A major problem would probably be radiation damage due to having to spend
- -some months in the Van Allen belts as the satellite spirals down to LEO.
-
- Question: what is the radiation profile of the Van Allen belts? This is
- of interest because GEO is in the outer portions of the outer belt.
- In particular, what is the ratio between the peak radiation level in
- the belts and the level at GEO?
-
- John Roberts
- roberts@cmr.ncsl.nist.gov
-