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Effect of Increase in Afterbody Length on the Hydrodynamic Qualities of a Flying-Boat Hull of High Length-Beam Ratio

Description: Report presenting an investigation to determine the effects of increased afterbody length on the hydrodynamic qualities of a model of a flying boat with a hull with a length-beam ratio of 15. Results regarding longitudinal stability, spray characteristics, excess thrust for take-off, landings in waves, and a summary chart are provided.
Date: April 1949
Creator: Kapryan, Walter J. & Clement, Eugene P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tank tests of three types of afterbodies on a flying-boat model with basic hull length-beam ratio of 10.0

Description: Report presenting testing of three different types of afterbodies on a powerful dynamic model of a flying boat with a basic length-beam ratio of 10.0. The three afterbodies tested were one with constant dead rise, one with warped dead rise, and one of extended length with warped dead rise. Results regarding aerodynamic characteristics and hydrodynamic characteristics are provided.
Date: March 1948
Creator: Garrison, Charlie C. & Clement, Eugene P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Acceleration Measurements During Landings of a 1/5.5-Size Dynamic Model of the Columbia XJL-1 Amphibian in Smooth Water and in Waves: Langley Tank Model 208M, TED No. NACA 2336

Description: A 1/5.5-size powered dynamic model of the Columbia XJL-1 amphibian was landed in Langley tank no. 1 in smooth water and in oncoming waves of heights from 2.1 feet to 6.4 feet (full-size) and lengths from 50 feet to 264 feet (full-size). The motions and the vertical accelerations of the model were continuously recorded. The greatest vertical acceleration measured during the smooth-water landings was 3.1g.
Date: September 25, 1947
Creator: Clement, Eugene P. & Havens, Robert F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of Variations in Forebody and Afterbody Dead Rise on the Resistance and Spray Characteristics of the 22ADR Class VPB Airplane: Langley Tank Model 207, TED No. NACA 2361

Description: From Summary: "An investigation was made to determine the effects of changes in the amount and distribution of forebody and afterbody dead rise on the hydrodynamic resistance and spray characteristics of a 1/11-size model of the Bureau of Aeronautics design No. 22ADR class VPB airplane. The variations in dead rise within the range investigated had no significant effects on resistance or trim, free to trim, or on resistance or trimming moment, fixed in trim. The coordinates of the peaks of the b… more
Date: August 28, 1947
Creator: Clement, Eugene P. & Daniels, Charles J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An investigation of effects of reversed-type longitudinal steps on resistance and spray characteristics of a flying-boat hull

Description: Report presenting an investigation of a flying-boat-hull model to determine the effects on the resistance and spray characteristics of reversed-type longitudinal steps designed so that the surfaces of the steps normal to the hull bottom face inboard. Results of the tests were compared with results of a conventional flying-boat-hull model. No appreciable improvement in the resistance or spray characteristics near the hump speed was noted.
Date: July 1947
Creator: Carter, Arthur W.; Clement, Eugene P. & Morewitz, Alvin H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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