As the Camaro styling studies progressed, aerodynamic qualities were considered analytically in consultation with research engineers.
A detailed check and test of aerodynamic properties was made in early 1965 as the final shape of the exterior surfaces became well defined. An accurate 1/4 scale clay model of the Camaro was subjected to intensive and detailed wind tunnel testing is a modern, fully instrumented tunnel facility at Dallas, Texas. Directions stability as well as power requirements and flow charateristics were given a great deal of attention by the stylists and research engineers of the Corporation and design engineers from Chevrolet.
The model was tested in the presence of a ground plane mounted on a turntable which permitted a varible yaw angle from right to left through the straight ahead position during a single test.
The model was pitched at various attack angles from run to run, as was the height in relation to the ground plane. Through instrumentation in the turntable, six forces and moments acting on the model were measured during each test run. Lift, drag, and side forces as well as pitching, rolling and yawing moments were recorded instantaneously and continuously as the yaw angle varied.
Over a total time of 78 hours in the tunnel, 76 data runs were made consisting of yaw runs through 60 degrees right to 18 degrees left. A fixed pitch angle was used during each, but was varied as much as three degrees up and down from run to run.
More to come in the next blog.
by Donald H. McPherson, Charles M. Rubly, and Victor D. Valade
the Chevrolet Camaro
Chevrolet Motor Div.
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