Old Mar 12, 2006 | 10:32 AM
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Jeremiah 29:11's Avatar
Jeremiah 29:11
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Default RE: How will aerodynamic testing change the Challenger design?

Gosh, I didn't mean to get such an emotional response.

This text goes with the attached:

Langley Air Force Base, Virginia-

With three years of work behind us, the GTM development team traveled to Langley Air Force base in Virginia to perform aerodynamic testing and analysis on the GTM using the Langley Full Scale Tunnel (LFST). The culmination of our design work in-house and our best race experience would mean nothing without verifying the design in real life, at speed in the tunnel.

The wind tunnel at Langley is MASSIVE. It is the largest currently operating wind tunnel in the world and has been used to test a wide range of racecars from NASCAR stock cars to Grand AM and ALMS prototypes.

All production cars on the road today produce lift and the idea is to minimize this lift.

Comparison data (source Road & Track Magazine):

2004 Porsche GT 343 lbs. DOWNFORCE @ 150 mph

1999 Ferrari 360 Modena 294 lbs. DOWNFORCE @ 150 mph

2005 GTM 333 lbs. DOWNFORCE @ 150 mph



Having a Challenger become significantly lighter due to lift and hence become unstable while going down
a racetrack/highway would be a bad situation.

At the very end of a design you have to do real world Wind Tunnel testing. The difference between the old days and now is you minimize the amount of Wind Tunnel test time.

Any more comments?

Jeremiah 29:11


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