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- From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
- Newsgroups: sci.electronics,sci.energy,rec.autos
- Subject: Re: Flywheel batteries as EV power source
- Date: 28 Dec 1992 20:22:50 GMT
- Organization: HST Wide Field/Planetary Camera
- Lines: 34
- Distribution: world
- Message-ID: <1hnnmqINNnna@gap.caltech.edu>
- References: <1992Dec19.192819.1816@adobe.com> <1992Dec21.193621.12001@microware.com> <78564@ncratl.AtlantaGA.NCR.COM>,<1992Dec22.214616.27043@fcom.cc.utah.edu>
- Reply-To: carl@SOL1.GPS.CALTECH.EDU
- NNTP-Posting-Host: sol1.gps.caltech.edu
-
- In article <1992Dec22.214616.27043@fcom.cc.utah.edu>, bbarkey@lark.utah.edu (Brian Barkey) writes:
- >>You haven't been listening have you?
- >>It doesn't matter what form the flywheel takes after disintegration.
- >>It could even turn into a gas or sub-atomic particles. What causes the
- >>BOOM is all of that kinetic energy being turned into heat.
- >>
- > And gasoline isn't explosive?
- No, pure gasoline is *NOT* explosive. Hell, pure gasoline isn't even
- flammable. You see, you've got to mix it with air. I don't recall the
- proportions for actual gasoline, but if we were talking about iso-octane
- (C8H18), we'd want to burn that to produce 4CO2 + 9H2O, which means we'd need
- 8.5 times as much oxygen, (42.5 times as much air) as gasoline vapor, by
- volume, or 2.38 times as much oxygen (10.7 times as much) air as gasoline, by
- weight. Now, getting this particular mixture by chance, and having the air and
- gasoline thoroughly mixed, is no simple task (that's why fuel/air bombs aren't
- all that common as weapons: they're REAL finicky).
-
- > I may be mistaken but any power source capable of propelling
- > a ton or more at speeds greater than 50 mph for hundreds of
- > miles must have a significant amount of energy in it.
-
- Though the gasoline contains lots of energy, it's damned near impossible to
- extract all that energy in under a second out-of-doors. So we're comparing the
- failure of a flywheel (which would, for flywheels spinning at the speeds in
- question, take less than a second) with burning the gasoline over a period of
- many minutes.
- --------------------------------------------------------------------------------
- Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL
-
- Disclaimer: Hey, I understand VAXen and VMS. That's what I get paid for. My
- understanding of astronomy is purely at the amateur level (or below). So
- unless what I'm saying is directly related to VAX/VMS, don't hold me or my
- organization responsible for it. If it IS related to VAX/VMS, you can try to
- hold me responsible for it, but my organization had nothing to do with it.
-