Page 12 - Combined_22_OCR

CONCLUSIONS

1 . Implementation of the features tested and reported herein will result in a
race car requiring approximately 118 less horsepower (from an aerodynamic
standpoint) at a velocity of 190 mph than the Plymouth car that was raced in
1968.

2. Using the conversion factor of 14 HP per one mile per hour velocity increase
at V = 190 mph (Reference 7), a potential speed increase above the 1968 race
vehicle of 8.5 mph is possible.

3. Use of under-nose spoilers on the recommended configurations not only re­
duces drag but can be used to change front and rear wheel lift loads by proper
fore or aft placement.

4. With these added features it will be possible to set the car up such that the
net aerodynamic lift acting on the car at V ~ 190 mph is zero.

5. The added.features cause the side force center of pressure to move slightly
forward from the standard vehicle position.

6. Insufficient data on full-scale car handling characteristics make it impossible
to form concrete conclusions on vehicle handling qualities from these 3/8-
scale data.

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