An Investigation of Hydrodynamic Maneuvering Derivatives and Horizontal Stability of Darpa Suboff Depending on Depth

It is known that DARPA SUBOFF submarine model does not have a horizontal stability in deep water. In this study, the of moving during periscope (snorkel) position or close to free water surface, has been determined 3 DoF (degrees freedom). While determining and hydrodynamic maneuvering derivatives, linear coefficients lateral translational force at different depths yaw angular moment were used. The selected as 1.1D, 2.2D, 3.3D 6D, here D diameter. derivatives obtained by performing systematic analyzes with computational fluid dynamics method. Necessary validation studies also carried out analyzes. analysis, longitudinal X0, Xv, Xd, Xẟ, Yv, Yr, Yẟ, Nv, Nr ve Nẟ terms computed model. A was generated these coefficients. then effects using found when cruising surface loses its for greater than 4.6D.