Howdy,
then a streamliner shape similar to the Feuling streamliner would
be one of the better shapes? I know that there is discussion concerning
round body shapes ala Teagues' liner v/s flat bottomed liners like Feuling's...
At 11:54 AM 11/6/01, you wrote:
>Yes!
>
>
>on 11/6/01 6:51 AM, john robinson at john@engr.wisc.edu wrote:
>
> > Howdy,
> > One of the questions I have is about the Red Head , if you know
> > the car, it was swoopy, kinda exaggerated coke bottle Corvette shape. I was
> > wondering about the drag behind the wheel humps, if it would go up due to
> > turbulence and flow separation behind the hump?
> >
> > At 04:10 PM 11/5/01, you wrote:
> >> John, I assume you wanted a real answer to you question and not just chit
> >> chat. First keep the car on the ground, allow very little space for air to
> >> get under the car. Air under the car has to be sheared because the air is
> >> attached to the car and the ground. This eats up quite a bit of power.
> Next,
> >> smooth swoopy corners are better than rectangular ones. Rectanglear set up
> >> bad air flow problems causing drag from interference of the various flows.
> >> Next minimize the frontal area. Do everything you can to reduce it because
> >> it is a direct multiplier for power required ( double the area, double the
> >> power at any given speed). If you can reduce the frontal area by
> making the
> >> body lower between the wqheels, it is a good thing to do, as along as the
> >> panel intersections are not angular corners. Given all that, I
> wouldn't be
> >> doing a front driver. Asking the tire contact patch to do to many things:
> >> forward traction, steering, etc. Anyhoo, good luck...send me a jpg when it
> >> looks good...
> >>
> >> mayf
> >>
> >>
> >> ----- Original Message -----
> >> From: "john robinson" <john@engr.wisc.edu>
> >> To: "DrMayf" <drmayf@teknett.com>
> >> Cc: <land-speed@autox.team.net>
> >> Sent: Monday, November 05, 2001 9:14 AM
> >> Subject: Re: What's Up?
> >>
> >>
> >>> I'm here, been putting pixel to screen, drawing my
> streamliner.... front
> >>> wheel drive front wheel steer staggered rear wheels....right now about 7
> >>> ft2 frontal area.... trying to get it lower....which do you think is
> >>> better, slightly rounded body panels but still a rectangle? or swoopy
> >>> "trout" looking? is lowering the body between the wheels and making wheel
> >>> fairings better from a C/D standpoint (ala "Red Head" ) or shaped
> like the
> >>> Feuling with a rectangled squarish shape?
John Robinson, Mechanician
Mechanical Engineering University of Wisconsin
1513 University Ave.
Madison, Wi. 53706
608-262-3606
FAX 608-265-2316
Current World Land Speed Record Holder
Bonneville Salt Flats
H/GCC 92 cu.in. 1980 Dodge Colt
131.333 MPH set 1995
136.666 MPH set 1996
140.292 MPH set 2000
144.396 MPH set 2000
MPS-PG 441 c.c. 1967 BSA Victor Motorcycle
95.193 MPH set 2001
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