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- Xref: sparky sci.electronics:22145 sci.energy:6692 rec.autos:31126
- Path: sparky!uunet!dtix!darwin.sura.net!spool.mu.edu!olivea!apple!goofy!mumbo.apple.com!michael.apple.com!ems
- From: ems@michael.apple.com (E. Michael Smith)
- Newsgroups: sci.electronics,sci.energy,rec.autos
- Subject: Re: Flyin' Flywheels
- Message-ID: <1992Dec28.211249.18879@michael.apple.com>
- Date: 28 Dec 92 21:12:49 GMT
- References: <1hcmi5INN7fd@armory.centerline.com> <1992Dec25.194148.17845@ssc.com> <1992Dec26.083859.15101@klic.rain.com>
- Organization: Circle 'C' Shellfish Ranch, Shores-of-the-Pacific, California
- Lines: 49
-
- In article <1992Dec26.083859.15101@klic.rain.com> keithl@klic.rain.com (Keith Lofstrom) writes:
-
- >I saw one article about some Navy experiments, dropping some 2 meter
- >metal rods from airplanes into China Lake. They penetrated 40 feet.
-
- And don't forget the bombs we dropped in Iraq on the 'bomb proof'
- shelters... They were kinetic penetrators (something like 100+ feet
- of dirt, PLUS the concrete bomb shield, PLUS the concrete bunker walls...
-
- This were 'only' doing about Mach 1 or 2 on impact ... It was only after all
- the penetration that they set off their explosives ...
-
- >Lastly, consider the humble hypervelocity depleted uranium antitank
- >shell. Blows right inside Mr. Tank, and fills the inside of the tank
- >with flaming liquid uranium drops. As well as fragments of the inside
- >wall of the tank - this is called "spalling". The antitank shell
- >does not penetrate 99.9% of the tank.
-
- There are also anti-tank weapons that use 'fluff' ... they set of
- a shaped charge of explosive and let the plasma jet cut a hole inside...
-
- Nothing but hot gas ... lighter than 'fluff' ...
-
- (The rest of a very good posting deleted.)
-
- >Well, guys'n'gals, thanks for the fun. Engineering is the process of
- >tearing things apart in our minds. Those things we can't tear apart
- >in our minds we have to go ahead and build. Too much work. Flywheel
- >powered cars are so beguiling that it takes a good bit of effort to tear
- >the concept apart, but it can be done. If you feel more like defending
- >ideas than trashing them, you have the wrong temperment for engineering.
- >Try management or sales.
-
- Now here we part company. Engineering is the art of compromise. It is
- the art of finding how to construct something useful from the available
- materials (and laws of science). Management is the art trashing things!!
- And don't you forget it ;-) Managers are always looking for perfectly
- good engineering projects to tear appart and distroy (usually just to
- save a few bucks and best done just before the project is about to
- ship! ;-)
-
- --
-
- E. Michael Smith ems@apple.COM
-
- 'Whatever you can do, or dream you can, begin it. Boldness has
- genius, power and magic in it.' - Goethe
-
- I am not responsible nor is anyone else. Everything is disclaimed.
-