Quote:
Originally Posted by aerohead
Copy-Pro,here where I use the computer is closing for the Thanksgiving holiday,so it will be next week before I can bring anything.
If you can get a look at any of Hucho's books,you'll find a section on 'Effective-Bluffness','Effective-Fineness Ratio',which examines the role ground clearance plays with Cd.The Schl'o'rwagen is investigated completely for G.C. effects.
You'll notice that,for instance,the 'Aerodynamic Streamlining Template' would have a Cd 0.08 on the ground with it's wheels completely retracted into it's body,rather than Cd 0.13 or so with ground clearance.
*Lowering effectively increases fineness ratio.
*It also reduces the frontal area by virtue of shielding the wheels/tires.
*It can affect body drag optimization by virtue of inclination/rake effects,as with both Ford Probe-IV and V which are both lowered and 'raked' for lowest drag.
I'll catch up next week.
We are cautioned to investigate vehicles on a case-specific basis,so we'd be remiss to attempt blanket statements.
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I've seen positive results on the vx by lowering the front only (2"). Unfortunately its difficult to do ABA with the time and alignment, so I won't post numbers. It is significant though, and completely changes the wind noise pattern.