Page 2 - Combined_110_OCR

Distribution
Page 2
November 1, 1968

evaluations of the data indicate that corrections applied to the Wichita
7 x 10 ft data for blockage were valid with excellent agreement of the

drag data between the two tunnels being obtained. The 3/8-scale Dodg 0
Charger was also installed and similar results obtained.

Drafting studies utilizing the 3/8-scale car were begun on October 17,
1968. At the Wichita facility, data was obtained only for the leading car
in a drafting situation. At Lockheed, forces were measured on the
trailing car. Some very interesting results were obtained but must
await detailed analysis for conclusions to be reached.

Full-scale tests utilizing a race vehicle (Dodge Cha O T Q (D were begun
on October 21, 1968. These tests were intended to verify the 3/8-scale
results and to correlate with track and proving ground data. Again,
cursory examination of the data shows good agreement with previous
test data. A second car was placed in the tunnel trailing the Charger on
October 23, 1968 to verify the 3/8-scale drafting results. No data are
available as yet on these results.

The tests were completed on October 23, 1968.

E. Vaughn

Distribution:

H. Bader, Jr.
M. L. Bell
J. E. Call
W. P.
E. E. Zimmerman