United States Department of Transportation
i
Progress on the Ram Wing Concept with Emphasis on Lateral Dynamics
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1971-01-01
[PDF-2.38 MB]
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Abstract:Theoretical and experimental efforts conducted at the Transportation Systems Center in the ram wing program are described. Glide Tests were performed using a simple ram wing model operating in an open rectangular trough 50 ft long. Lift drag ratios of 13 were recorded, and a low-frequency roll oscillation was observed. A theoretical model for a flat-plate airfoil in a rectangular trough of infinite depth is described and compared with existing theories and experimental data. The lateral dynamics of tracked vehicles of this type are reviewed and the most important stability parameters are identified. It is recommended that future research continue to focus on lateral dynamics and that careful experimental measurements be made for the stability derivatives.
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