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- Xref: sparky sci.electronics:21419 sci.energy:6370 rec.autos:30352
- Newsgroups: sci.electronics,sci.energy,rec.autos
- Path: sparky!uunet!spool.mu.edu!agate!ames!eos!kronos.arc.nasa.gov!butch!enterprise!news
- From: ()
- Subject: Re: Flywheel batteries as EV power source
- Message-ID: <1992Dec22.204130.18133@enterprise.rdd.lmsc.lockheed.com>
- Sender: news@enterprise.rdd.lmsc.lockheed.com
- Nntp-Posting-Host: 129.197.148.130
- References: <1992Dec21.193621.12001@microware.com> <51694@seismo.CSS.GOV>
- Date: Tue, 22 Dec 92 20:41:30 GMT
- Lines: 61
-
- In article <51694@seismo.CSS.GOV>, stead@skadi.CSS.GOV (Richard Stead) writes:
- >
- > Flame on.
- >
- > The rampant idiocy on flywheels just continues. How many ways do people have
- > to be told about conservation of energy?
-
- Conservation of energy exactly, where do you think you get the energy to
- turn a carbon carbon fly wheel into cotton candy from? Before you start
- flaming at others for not doing the math, do it yourself.
-
- > Don't contribute to the discussion if you don't know anything and haven't
- > at least read a few articles in it, for cryin' out loud. I figure there's
- > been about 1 post every 4 or 5 hours over the past week or so, on average,
- > refuting this lunacy about "fluff".
- >
- > Get it through your thick head - energy is conserved. A flywheel that can power
- > a car for 600 miles stores basically the same energy that gasoline to power it
- > the same distance contains. Do you know anything about fuel-air bombs? Do you
- > realize how big an explosion a few gallons of gas can make, when properly mixed
- > with air? Do you realize that a hyper speed flywheel fails in microseconds,
- > releasing all that energy at once?
-
- Wrong again, a hyper speed carbon carbon flywheel is not designed to fail at
- once it is designed to fail a bit at a time, as cotton candy, using up a
- significant fraction of the energy stored in the disk over a period of time
- (although that time may be microseconds).
-
- > You think fluff is harmless? Let's tie you down and hit you with "fluff"
- > traveling at several km/s and at a temperature of a few thousand degrees.
- > Let's see if we can find any teeny parts of you after the impact.
-
- Obviously this fluff created by a failed flywheel is not exactly safe. But
- you contain this fluff inside another carbon carbon shell such that the
- expanding hot fluff makes more fluff until the energy is such that it can
- be contained by a container. The object is not to stop the flywheel failure
- at any given point, but to slow it down and cause it to loose energy.
-
- What I would like to see is a good treatment of the energy needed to turn a
- flywheel into cotton candy. This gives everyone a better idea of how
- much energy is left yet to be contain by the next carbon carbon shell.
-
- > I'm really tiring of this nonsense, so while I politely corrected the
- > first posters in their misconceptions - you get flamed, boy.
- >
- > > >My opinions are my own.
- >
- > Good thing - they're pretty damned stupid for anyone else.
-
- Gee thanks for your help in keeping this discussion open and moving forward.
-
- > --
- > Richard Stead
- > Center for Seismic Studies
- > Arlington, VA
- > stead@seismo.css.gov
- >
- Darin S. Olson
- R&DD
- LMSC
- Palo Alto, CA
-