Quote:
Originally Posted by jimepting
Phil, is this fineness ratio for the full body of rotation or the half body? Also, when we speak of length, is it the total car length or just the length from the car's highest point?
|
Jim,the 2.5 is for the streamline body.
When it is brought down to the ground-plane and then half submerged into the Prandtl/Rumpler mirror-image it produces a car body with an effective fineness ratio of 5:1 which Hucho eludes to as the shape of drag minimum when comparing the 1981 ARVW and 1978 Mercedes-Benz C-111 III rekordwagen.
With respect to length,that will be the vehicles overall length,but Hucho wants us to be thinking about effective length.
The height of the vehicle is the only parameter a person needs to use the 'Template' and it's taken at the highest point on the roofline,when ballasted to at least the EPA test load ( 300-lbs ).