Quote:
Originally Posted by whatmaycome14
Not even front skirts?
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I was sharing some data with serial11r:
*The 'bulged',frontal area-adding,front skirts on the 1936 Jaray Adler were only good for a 1% drag reduction.However,with the rear skirts the car saw an overall 13.6% drag reduction.
*The 'flush' front skirts on the 1983 Ford Probe-IV contributed to a 9% reduction.
That's quite a spread.
Since the lowest drag cars have skirts,it kinda infers that we 'want to go there'.
Hucho cites work by Cogotti on wheelhouse drag.
Fiat separated out the wheelhouse drag in a paper they published.
The numbers are scattered,but there's a trend towards drag reduction.
The cleaner the car,the more important they become.Wheel drag constitutes 1/2 the drag of a low-drag car.
Here is the Cd 0.12 Honda Dream-1,with non-enclosed wheels.
Here is the Cd 0.10 Cambridge University CUER solar racer with fully-enclosed wheels.
HOT ROD Magazine's Camaro would have run faster with shielded wheels,but the rulebook forbids it.When you get into the enclosed-wheel streamliner class,you really see some velocity
