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- Newsgroups: sci.space
- Path: sparky!uunet!spool.mu.edu!agate!rsoft!mindlink!a752
- From: Bruce_Dunn@mindlink.bc.ca (Bruce Dunn)
- Subject: GEO satellites as electrical vehicles
- Organization: MIND LINK! - British Columbia, Canada
- Date: Mon, 28 Dec 1992 01:10:31 GMT
- Message-ID: <18949@mindlink.bc.ca>
- Sender: news@deep.rsoft.bc.ca (Usenet)
- Lines: 26
-
- Regarding Geosynchronous satellites launched from a DC-1
-
-
- > Allen W. Sherzer writes:
- >
- > Maybe you use lower costs to fly redundant satellites, each less relaible.
- > When one breaks, it uses a high efficiency electric engine to come back to
- > LEO where it is repaired, refueled, and returned. Maybe we abandon comsats
- > in GEO and place them in LEO. I can think of lots of alternatives.
-
-
- 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. The same ion engine could be used for station keeping - all that
- would be required is a larger propellant supply to allow for return to LEO.
- 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.
- This damages solar cells, but if the array is replacable, this might not be
- too bad. Other electronics might have to be replaced because of radiation
- damage, but during servicing it might be desirable to replace them anyway for
- updating and extension of service life.
-
-
- --
- Bruce Dunn Vancouver, Canada Bruce_Dunn@mindlink.bc.ca
-