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From: robertm@dartvax.UUCP (Robert P. Munafo)
Newsgroups: net.micro
Subject: Re: Voltage protection for micros
Message-ID: <2775@dartvax.UUCP>
Date: Sun, 24-Feb-85 03:38:54 EST
Article-I.D.: dartvax.2775
Posted: Sun Feb 24 03:38:54 1985
Date-Received: Mon, 25-Feb-85 02:21:10 EST
References: <8296@brl-tgr.ARPA>
Organization: Dartmouth College, Hanover, NH
Lines: 16

>   I question the "GREAT BIG HEAVY" flywheel.  Energy storage with
> flywheels is going in the direction of relatively small, light wheels
> made of exotic fibre materials and spinning at fantastic rates (100,000+
> rpm) on magnetic bearings in a vacuum. Energy is added and taken out by
> magnetic coupling.  Of course, it's all in an armored box to handle the
> shrapnel when the wheel breaks up.  Consider what happens to the "BIG
> HEAVY" wheel when a bearing seizes.
>            -- Bob Munck, MITRE

Remember that the size and mass of the flywheel really does not
matter.  Whether it's big and heavy or small and light, it is still
going to be used to store the same amount of energy, and so the
same amount of energy will be released when the flywheel fails.
-- 
  
  Robert P. Munafo   ...!{decvax,cornell,linus}!dartvax!robertm