Page 6 - Combined_26_OCR

OBJECT

The object of recent wind tunnel tests and theoretical studies on rear deck
aerodynamic control surfaces was to develop a package offering varying rear
lift control and improved cross-wind and cornering stability.

CONCLUSION

Use O f the recommended rear deck airfoil will allow up to c/ pound rear
lift reduction with less than a 1 MPH lap speed penalty.
. Although the car with recommended twin rear vertical stabilizers is still

differential is reduced from 3r>0 pounds to less than 90 pounds at 6 yaw.
aerodynamically unstable in yaw, the front to rear wheel side force O
In general, the wind tunnel results compare favorably with the or

JffiCOWJIDATIOrlS

The recommended rear deck airfoil and twin vertical stabilizers should o (D
tested thoroughly at Proving Groundstrack and over the road prior to
releasing cars to the public.

Brief confirmatory wind tunnel tests should be conducted on the recommended
airfoil and stabilizers.

An o^-mer’s manual containing instructions and warnings on the. use of
aerodynamic control surfaces should be prepared.