Means of providing an air layer between a liquid and solid surfa

Details Means of providing an air layer between a liquid and solid surfa Means of providing an air layer between a liquid and solid surfa

1990-01-16

1991-07-16

Basinger, Sherman

Ships

Building

Antifriction surfaces

138148, B63B 134

Patent

active

050315595

ABSTRACT:
A method and apparatus for reducing friction at the interface between a liquid and a solid. A solid interface member includes a plurality of apertures over the entire surface which are to be in contact with the liquid. The apertures are of a size and dimension such that the surface tension of the liquid will not allow the liquid to pass through the apertures, but which will allow a gaseous material with less surface tension than the liquid to pass therethrough. The gaseous material is thereafter motivated through the apertures to interpose a gaseous layer at the liquid solid interface which reduces the drag coefficient therebetween, which would otherwise result from relative motion between the solid interface member and the liquid.

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