The investigation of the effect of forebody warp (progressive increase in angle of dead rise from step to how) on the hydrodynamics qualities of a hypothetical flying "boat having a hull length-beam ratio of 15 was made in smooth water and in waves. The hull of high length- beam ratio was designed to meet advanced requirements for increased speed and increased range for flying-boat designs and has been shown to have low aerodynamic drag. The results obtained for the warped fore-body are compared with those for the basic model.nWarping the forebody planing bottom increased appreciably the range of stable trim between the lower and upper trim limits of stability although the center-of-gravity limits of stability were reduced. Landing stability was improved by warping the forebody.
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