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Article #6484Re: Galileo's atmospheric probe
From: _Floor_
Date: Thu, 17 Dec 1992 23:37
Date: Thu, 17 Dec 1992 23:37
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2114 bytes
In article <ZOWIE.92Dec16182405@daedalus.stanford.edu> zowie@daedalus.stanford.edu (Craig "Powderkeg" DeForest) writes: ] If you drop a Timex watch (``takes a lickin' and keeps on tickin'\ '') from ] a height of 1m onto a cement floor, carefully holding it so it falls flat, ] and it stops in 1mm, then it underwent 1000G's of acceleration! ] ] And, being a Timex, it (usually) still works! ] ] We talked about this about a year ago on sci.physics. Everyday things ] undergo a lot more acceleration than we give 'em credit for. ] ] Other examples: a light aluminum hunting arrow experiences 1000G's on ] release from a good compound bow; a car piston with a 10cm stroke ] undergoes 900G's at the top and bottom of its stroke, at 3000rpm (and ] a whopping 3600 at 6000 rpm!); and dropped personal stereos routinely ] take >300 G's and survive. I think there's a bit of a difference here. You're talking about forces and accelerations experienced for milliseconds at a time. This probe will be experiencing this accleration for several minutes! Things can be damaged to prolonged exposure to acceleration! _____ "But you can't really call that a dance. It's a walk." - Tony Banks / ___\ ___ __ ___ ___ _____________ gene@cs.wustl.edu | / __ / _ \ | / \ / _ \ | physics | gene@lechter.wustl.edu | \_\ \ | __/ | /\ | | __/ |racquetball| gev1@cec2.wustl.edu \_____/ \___/ |_| |_| \___/ |volleyball | gene@camps.phy.vanderbilt.edu Gene Van Buren, Kzoo Crew(Floor), Washington U. in St. Lou - #1 in Volleyball
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Path: arc1-ca.pugleaf.net!sparky!uunet!dtix!relay!saimiri.primate.wisc.edu!zaphod.mps.ohio-state.edu!wupost!eclnews!wucs1!gene From: gene@wucs1.wustl.edu (_Floor_) Newsgroups: sci.space Subject: Re: Galileo's atmospheric probe Message-ID: <1992Dec17.233751.14514@wuecl.wustl.edu> Date: 17 Dec 92 23:37:51 GMT References: <BzCrJn.HG.1@cs.cmu.edu> <ZOWIE.92Dec16182405@daedalus.stanford.edu> Sender: usenet@wuecl.wustl.edu (News Administrator) Distribution: sci Organization: The K-Zoo Crew Lines: 27 Nntp-Posting-Host: wucs1