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- Xref: sparky sci.electronics:21659 sci.energy:6479 rec.autos.tech:17200
- Path: sparky!uunet!spool.mu.edu!darwin.sura.net!seismo!skadi!stead
- From: stead@skadi.CSS.GOV (Richard Stead)
- Newsgroups: sci.electronics,sci.energy,rec.autos.tech
- Subject: Re: Flywheel batteries as EV power source
- Message-ID: <51711@seismo.CSS.GOV>
- Date: 28 Dec 92 23:52:20 GMT
- References: <1992Dec16.192456.6261@news.cs.brandeis.edu> <7003@otc.otca.oz>
- Sender: usenet@seismo.CSS.GOV
- Followup-To: sci.energy
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- Nntp-Posting-Host: skadi.css.gov
-
- In article <7003@otc.otca.oz>, elson@otc.otca.oz.au (Elson Markwick) writes:
- > energy. Why not tap that and use it for recharging the flywheel?
-
- Good post overall. But I would answer your question with another -
- Why not tap the energy and use it recharging a battery?
- Batteries are well-characterized, very safe and stable; and they are
- off-the-shelf technology. They will probably beat a flywheel pound-for-pound
- in storage capacity, once flywheel shielding is taken into account. They
- suffer leakage current losses, but those are much less than the Q losses
- for a flywheel. And they will not introduce torque stresses onto the vehicle
- frame on every turn (flywheels will, even if mounted with opposing spins
- so that the vehicle as a whole is not spun).
-
-
- --
- Richard Stead
- Center for Seismic Studies
- Arlington, VA
- stead@seismo.css.gov
-