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

Robert F. Smiley
naca-tn-2453
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.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1951/naca-tn-2453.pdf