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RE: Car Aerodynamics
Cd is dependent on speed once above about 30 MPH. Cars are optimised for
different speeds. Normally the drag coefficient shoots up for any car
after above 70 MPH.
Cd as a function of speed? Hmmmm.....
Sorta flies in the face of the SAE standard practice of determining
a (constant) Cd using acceleration and coast-down tests, which by
their nature involve a wide range of speeds.
Drag *force* as a function of speed, yep. Drag *coefficient* as a
function of speed, well, that would be news to me...
Eric T. '86 5kS