John,
When I calculated the frontal area of my Vette for my simulation
software, I measured the TOTAL width (instead of track as book
suggested) X height. Using the suggested formula (track width) I came up
with 19.38 sq ft. Using my own #s I came up with 21 Sq Ft, not much
difference at 55 mph, but substantial at 200.
Ed
John Beckett wrote:
>
> You guys are both in the ball park. A Corvette is bigger than you think.
> Now I have a Chevette that acording to your equasion would equal 15 square
> ft., and I don't think its that small...it might run more like 17.5".
>
> Hey, Keith whats the height and width of your Camaro?
>
> At 02:28 PM 6/17/99 -0600, Ronald_B_Anderson@notes.seagate.com wrote:
> >Ed-
> >
> >Good, glad somebody out there hears me...
> >
> >My aerodynamics book says for a rough estimate, take width (73.6 in) times
> >height (47.7 in), convert to square feet, as you indicated by dividing by
> >144, which equals 24.38, and take 81 percent of that, which gives 19.75,
> >square feet, pretty close to your number. But that seems too large to me.
> >That's why I started searching for the real number.
> >
> >This year I plan on only observing at W.O.S. this year, and forming a plan
> >on breaking 200, my goal. First thing, I just got the C5, and need to find
> >someone who can do a world class job on a roll bar (luxury quality and
> >appearance). I already calculate my horsepower losses (rolling [frictional,
> >inertial, and mechanical] and aerodynamic losses) with a spreadsheet model
> >I built. Right now it looks like I need 450 HP to do the job. This points
> >to supercharging, but this is hard (read expensive) in the C5's engine
> >compartment. Carroll Supercharging in New Jersey, and Lingenfelter claim to
> >be able to do it for $10000. Can you explain this to my nagivator for me?
> >
> > --- Ron
> >
> >
> >
> >
> >
> >Ed Van Scoy <edvs@idt.net> on 06/17/99 11:09:39 AM
> >
> >Please respond to edvs@idt.net
> >
> >To: Ronald B Anderson
> >cc: Land-speed@autox.team.net
> >Subject: Re: I'm new
> >
> >
> >
> >
> >For a quick & dirty number, multiply vehicle height (inches) X track
> >width (inches) and divide by 144. My own quick measurements of a C5 were
> >62 X 45 / 144 = 19.38 sq. ft.
> >This is only a "driveway" technique, there are some REAL smart people on
> >this list that could get you a lot closer.
> >Are you planning to run the car at WOS this year?
> >Ed
> >
> >
> >Ronald_B_Anderson@notes.seagate.com wrote:
> >>
> >> OK, How's this thing work? I'm a USFRA member.
> >>
> >> Does anybody know how I can find out the frontal area, in square feet, of
> >> the new C5 Corvette? I need to calculate the
> >> aerodynamic loss. I know how to do this, I just need the number.
> >>
> >> --- Ron
> >
> >
> >
> >
> >
> >
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