Maneuvering Simulation of Sea Fighter Using a Fast Nonlinear Time Domain Technique.

摘要

Efforts to develop and mature a nonlinear time domain technique, based on a fast recursive neural network approach, to simulate the six degree- of-freedom (6-dof) motion of a ship in wind and waves are continuing. Here we describe work to develop a simulation for the Office of Naval Research (ONR) high speed experimental vessel, Sea Fighter (FSF-1). Results are presented comparing the measured 6-dof response of Sea Fighter operating at sea in sea states 4 and 5 with simulation predictions. The results show that open loop predictions of speed, pitch, heading and trajectory are quite accurate. The predictions for the very small roll angles are not as good indicating that improvements are still needed. Nevertheless, these early results demonstrate an emerging capability for predicting 6-dof ship motions for full scale vehicles in irregular waves.