Page 7 - Combined_26_OCR
P. 7


                  The recently developed nFn Series Race Charger has considerably lower drag
                  than any other race vehicle currently campaigning on the NASCAR circuit.
                  However, potential speed, increases based on drag reduction alone will not
                  be fully realized unless adequate means of controlling vehicle handling
                  at the higher speeds are developed* Recent wind tunnel tests and theoretical
                  studies of the use of aerodynamic control surfaces have been focused on the
                  development of such a handling capability.

                  Use of aerodynamic control surfaces on automobiles is not new. Many Land
                  Speed Record vehicles have been equipped with such devices and considerable
                  work has been done on the effects of stabilizers, airfoils, etc. on vehicle
                  handling in cross-winds and during cornering maneuvers.

                  The recommended. aerodynamic controls package discussed in this report con­
                  sists of two vertical stabilizers mounted at the rear of the rear quarter
                  panels with an airfoil section mounted between them approximately 2h inches
                  above the rear deck. Control of rear lift and front to rear lift distribution
                  is the primary function of the airfoil section, while the vertical stabilizers
                  are used to reduce the front to rear side force differential and, to a lesser
                  extent, increase lift on the right.side and reduce lift on the left side
                  during cornering. Naturally, all of the control benefits associated with
                  these devices are- only meaningful if the drag penalties associated with them
                  are relatively small®
   2   3   4   5   6   7   8   9   10   11   12