Subliming Layers Would Reveal Aerodynamic Effects

In proposed technique, flow of fluid across surface studied in detail by use of multilayered, multicolored coating. Particularly useful in study of flow of air over small area of aerodynamic surface. By use of this method, incremental determinations made as to friction, transfer of heat, positions of shock waves, and position and extent of turbulence on given surface. Technique applied to surface of model in wind tunnel or to aerodynamics surface on aircraft.