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Re: Coefficient of Drag and Frontal Area

To: "Dave Dahlgren" <ddahlgren@snet.net>, "Ken Bond" <kmb2@humboldt.edu>
Subject: Re: Coefficient of Drag and Frontal Area
From: "DrMayf" <drmayf@teknett.com>
Date: Fri, 27 Jul 2001 14:33:25 -0700
Interesting isn't it, the data I mean. I will look on my web site and see if
I have most of them. Will incorporate in the big Cd list along with the CdA
numbers already there. Dan mentioned in a previous post that it was useful
to have a wind tunnel at your disposal to figure these things out. Sure is!
But if you are like me, I cannot afford the use of a large tunnel for
anything. And if that is a public institution then is that what my tax
dollars are going for? I stand behind my math and am looking forward to
getting some data from you all this summer.

mayf

> very interesting on the front lift figures, more interesting than the drag
for
> me..Turk are you reading this...
> Dave
>
> Ken Bond wrote:
> >
> > Folks,
> >
> > I asked about Drag and Frontal Area over on a listserv
> > dealing with corvettes and got the following information
> > sent to me.  Dan's comment about drag reminded me to send
> > it along.  Hope this chart might help some other folks
> > as well.  I found it most helpful.
> >
> > KEN
> >
> > (P.S.... put in courier font and the chart will line up
> > if you have problems)
> >
> > *************
> >
> > >from the 1983 book "The New Corvette From A Through Z51"
> >
> > >Aerodynamic Data at 130 mph
> > >
> > >
> > >                           Bhp needed
> > >                           to overcome             Front           Rear
> > >                           air resistance          lift            lift
> > >                           at 130 mph              lbs.            lbs.
> > >
> > >1984 Corvette              97 bhp                  148             55
> > >1980 Corvette              126 bhp                 155             24
> > >1979 Corvette              143 bhp                 220             183
> > >1963 Corvette              108 bhp                 254             163
> > >1982 Camaro                111 bhp                 239             40
> > >1982 Porsche 928           138 bhp                 232             173
> > >1982 Toyota Supra          109 bhp                 290             57
> > >1982 Datsun 280-ZX         111 bhp                 174             116
> > >1981 Isuzu Impulse         108 bhp                 238             158
> > >
> > >
> > >
> > >
> > >Comparing Aerodynamics
> > >
> > >
> > >                                                   Frontal
> > >                           Cd                      Area            CdA
> > >
> > >1984 Corvette              .341                    19.28           6.57
> > >1980 Corvette              .443                    19.43           8.61
> > >1979 Corvette              .503                    19.43           9.77
> > >1963 Corvette              .402                    18.30           7.36
> > >1982 Camaro                .363                    20.90           7.59
> > >1982 Porsche 928           .445                    21.10           9.39
> > >1982 Toyota Supra          .381                    19.51           7.44
> > >1982 Datsun 280-ZX         .387                    19.51           7.55
> > >1981 Isuzu Impulse         .389                    18.90           7.35

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