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From memory - i dont have the book but i think ive read it, the page includes Coefficens of lift and drag for each 911 throught he ages, no 100% sure but i think thats what it is.
Location: Covilhã, Portugal (and sometimes in Évora)
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I have the book...on page 20, 74-75 nothing on the 911.
On page 19 and in appendix 1 there's some info:
911 Carrera - Cd =0,38 - 0.39 frontal area - 1,78 m^2
911 Carrera Cabrio - Cd = 0.40 - 0,41 frontal area - 1,77 m^2
page 74-75 talks about the GM windtunnel.
Appendix 2 has some info on the Porsche windtunnel:
nozzel crosssection - 22.3 m^2
Length of test section - 12 m
Maximum windspeed - 230 km/h
Slotted sidewalls
Contraction ratio - 6.06
Drive power - 2200 kW
