Accession Number : ADD018238

Title :   Water Ablative Coating for Vehicle Drag Reduction.

Descriptive Note : Patent, Filed 3 Sep 76, patented 10 Sep 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Supcoe, Robert F ; Moran, Francis J

Report Date : 10 Sep 1996

Pagination or Media Count : 4

Abstract : A exterior hull coating with drag reducing qualities for use on waterborne vehicles. The coating comprises a water soluble polymer of high molecular weight in a vehicle, and a diluent, and contains a swelling deferent agent, driers, and pigments. The coating may be applied by the well-known techniques of brush painting rolling, and spraying. The coating ablates in a timed-release fashion into the fluid boundary layer adjacent to the vehicle skin to reduce drag by the reduction of turbulence and the promotion of laminar flow in the boundary layer.

Descriptors :   *PATENTS, *DRAG REDUCTION, *WATER BASE PAINTS, ABLATION, BOUNDARY LAYER, TURBULENCE, POLYACRYLAMIDES, WATER SOLUBLE MATERIALS, LAMINAR FLOW, SKIN(STRUCTURAL), HULLS(STRUCTURES), PLASTIC COATINGS, VINYLPYRROLIDONE

Subject Categories : Coatings, Colorants and Finishes
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE