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Article #14891Re: Flywheel batteries as EV power source
From: Troy Frericks
Date: Mon, 21 Dec 1992 19:36
Date: Mon, 21 Dec 1992 19:36
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In article <1992Dec19.192819.1816@adobe.com> pngai@adobe.com (Phil Ngai) writes: >In article <1992Dec19.065254.8562@athena.mit.edu> ankleand@mtl.mit.edu (Andrew Karanicolas) writes: >>A major disadvantage that I see with the flywheel scheme is the amount >>of time it would take to "charge" it up from zero energy. If the >>flyweel can provide a large amount of output power for a long time, >>then it should take at least the same time to charge it back. A >>scheme where flywheel systems are interchanged at "fuel" stops could >>alleviate this issue. This is kind of like saying that a wind up watch takes 24 hours to wind. You can add X ammount of energy in Y ammount of time to the flywheel and use X (minus a slight ammount for bearing loss) in Z ammount of time. ie. Charging time and dis-charge time are as unrelated in the flyweel as charging time and dis-charge time are in a lead-acid battery. > >If I were a terrorist, I would drool at the thought of being able to >get such wonderful bombs so easily... All you'd have to do is arrange >for the vacuum valve to be opened on command or the magnetic bearing >to be turned off, etc. > >BOOM! Modern composit materials, when used in a flywheel, will disintegrate with such a failuar. This bomb would be about as wonderful as some fiber-glass insulation falling out of your attic. > >-- >My opinions are my own. - Troy Frericks Internet: troyf@MICROWARE.COM Microware Systems Corporation UUCP: uunet!mcrware!troyf 1900 NW 114th St Phone: (515)224-1929 Des Moines, IA 50325-7077 Fax: (515)224-1352
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Newsgroups: sci.electronics,sci.energy,rec.autos Path: arc1-ca.pugleaf.net!sparky!uunet!mcrware!troyf From: troyf@microware.com (Troy Frericks) Subject: Re: Flywheel batteries as EV power source Message-ID: <1992Dec21.193621.12001@microware.com> Sender: news@microware.com Nntp-Posting-Host: groucho Organization: Microware Systems Corp., Des Moines, Iowa References: <Bz6nuM.LCo@acsu.buffalo.edu> <1992Dec19.065254.8562@athena.mit.edu> <1992Dec19.192819.1816@adobe.com> Date: Mon, 21 Dec 1992 19:36:21 GMT Lines: 36