A Study on the Modeling of Hydrodynamic Coefficient for the Emergency Maneuver Simulation of Underwater Vehicle

This paper describes a hydrodynamic modelling study based on the Feldman`s equation to predict the nonlinear and coupled maneuvering characteristics of high speed submarine. The hydrodynamic coefficients set is obtained from the modeling of the cross flow drag force and sail induced vorticity, and the captive model experiments(VPMM and RA test) results used to improved the accuracy. The results contained in this paper will be helpful to predict the behavior of tight turn maneuver and to improve the SOE(Safety Operational Envelope) analysis in case of emergency maneuver