33. The ram-wing surface effect vehicle: Comparison of one-dimensional theory with wind tunnel and free flight results: R. W. Gallington, M. K. Miller and W. D. Smith.Hovering Craft and Hydrofoil, 11 (15), 10–19 (1972); 9 ref., 24 fig.

Abstract

Abstract : The one-dimensional channel flow theory with leakage is described. Using this theory lift and drag laws for low aspect ratio ram-wings with side plates are derived. The one-dimensional channel flow theory is corroborated by wind tunnel tests of two ram-wings of significantly different geometry. Lift/drag ratios far superior to existing surface effect vehicles were measured. A series of successful free flight model tests show that complete vehicles designed from the one dimensional channel flow theory can be statically and dynamically stable over a ground clearance range from zero to infinity. (Author)