home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.energy
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!uwm.edu!uucp.mr.med.ge.com!news.mr.med.ge.com!hinz
- From: hinz@picard.med.ge.com (David Hinz Mfg 4-6987 ~BHOSVWZ#097)
- Subject: Re: Mileage vs. Safety concerns in autos
- Message-ID: <1992Dec31.061230.22026@mr.med.ge.com>
- Sender: news@mr.med.ge.com
- Nntp-Posting-Host: guppie
- Organization: GE Medical Systems, Magnetic Resonance
- X-Newsreader: TIN [version 1.1 PL6]
- References: <1992Dec30.204434.19136@magnus.acs.ohio-state.edu>
- Date: Thu, 31 Dec 92 06:12:30 GMT
- Lines: 89
-
- John F Nielsen (jnielsen@magnus.acs.ohio-state.edu) wrote:
- : In article <1992Dec30.061609.29827@mr.med.ge.com> hinz@picard.med.ge.com (David Hinz Mfg 4-6987 ~BHOSVWZ#097) writes:
- :
- :
- : >What bothers me about the CAFE standards rising is that it will encourage
- : >the building of even more flimsy cars than we already have. Yeah, it's
- : >a good idea to conserve petrol, I don't think that's the way to go about it.
- :
- : If engineering is constant:
-
- It's not.
-
- If a car is designed by bean counters, it'll be junk. If it's designed for
- quality, rather than skimping every penny, it'll work.
-
- : A light car impacting a wall would produce the same damage to
- : occupants as a heavy car impacting a wall.
-
- Lots of variables here. Say you are riding on a 1-ton steel bar, and impact
- the wall. The forces on your body would be considerable. Say you are on a
- 1-ton, gradually crumpling (whatever), you'll come out lots better.
- :
- : IT is conceiveably possible for one in a light car to hit one in a
- : heavy are and fare better if the light car was engineered better. The
- : problem is the lighter the car relative to the other car, the more
- : energy that is transferred to the light car.
-
- Agreed. It's not so much the AMOUNT of energy, but the slope of the impact, the
- acceleration
- upon your body during the crash process. Solid bar = rapid acceleration, crumple
- process = gradual acceleration.
- :
- : I guess my point is the following:
- : It is incorrect to say that CAFE standards will encourage the building
- : of flimsy cars. Since, if everyone drove these resulting
- : small cars, size is no longer an issue. Flimsy does not equal small
- : it equals poorly engineered.
-
- I disagree, for the most part here. In an ideal world, where all manufacturers
- would care enough, they would strive to find better ways to improve survivability.
-
- Unfortunately, it's a whole lot easier just to make the car out of 24 gague metal
- instead of 20 gague, or whatever, and end up with vehicles that just don't cut it.
- While SOME give in a crash is desirable, you don't want it to give so much that
- the passenger cabin is compromised. Ideally, doors should still be openable.
-
- It would be interesting to do a graph of vehicle weight vs. survivability, I
- would think the correlation would be very high on the lightest cars (most
- dangerous) with things getting muddier as the cars get heavier.
-
- : Size only matters to saftey when you have all types of cars on the
- : road. In that case you would want the biggest best engineered car you
- : can find.
-
- I would say that size doesn't even matter then. I'd rather have the best
- engineered car I can (find & afford), rather than the biggest.
-
-
- : John Nielsen MAGNUS Consultant ______ ______ __ __
-
- I guess what I'm trying to say is that CAFE isn't the way to go to save energy,
- if you look at the long term benefits to the society at large. If you force
- mileage figures of, say, 40MPG, you WILL be forced to buy flimsy cars, because
- that's the easiest for the automakers to produce that will reach that mileage.
-
- If we would, instead, go to multi-fuel (or just alcohol) while we are getting
- the bugs out of the EV systems, we could keep some semblance of survivability
- in the average car, which would carry on into EV's, hopefully. If we cheapen
- construction even more NOW, then there's no reason for the average car to
- improve once petrol isn't a concern.
-
- Composite materials may be an option here, for better strength/weight ratios, but
- I'm assuming that they are cost prohibitive at this time. Once that technology
- matures, it could be a great resource in this area.
-
- Until we have a way to do it safely, raising the CAFE standards drastically
- is not going to help us long-term, but it'll look good for short term
- political gains. I guess that's what it's all about when you're in charge, eh?
-
- Later,
- Dave
-
-
-
- --
-
- Dave Hinz - Opinions expressed are mine, not my employer's. Obviously.
- Ask me if I have an opinion on this! \ Don't blame me; I voted for Perot!
- SAAB - Because you get what you pay for. \ Pherrets are Phun!!!
-