An experimental study of water-pressure distributions during landings and planing of a heavily loaded rectangular flat-plate model

Robert F. Smiley
Sep 1951

As part of a landing investigation being conducted at the Langley impact basin to determine the distribution of water pressure on seaplanes, a rectangular flat-plate model, 1 foot wide and 5 feet long, was subjected to smooth-water impact and planing tests. Landings were made at fixed trims of 6, 9, 12, 15, 30, and 45 degrees for a range of flight-path angles from approximately 2 to 20 degrees, with beam-loading coefficients of 18.8 and 36.5. Planing runs were made at trims of 6, 15, 30, and 45 degrees.

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