Maneuverability is one of the most important overall performances of underwater vehicle. Good maneuverability is very important for ensuring the safety of underwater vehicle's navigation and improving the underwater vehicle's work effectiveness. The conventional approach of evaluating maneuverability is to calculate the performance indexes respectively from the vertical motions and the horizontal motions. The only typical space motion of underwater vehicle, spatial helical motion, can't reflect the maneuverability comprehensively. This paper aims to design an innovative space motion for underwater vehicle.
The paper will start with analyzing the coupling effect of vertical motions and horizontal motions. Based on the existing typical six degree of freedom motion of aircraft, a space motion that can describe the character of general space motion will be devised by simulation method, at the same time, ensuring the safety of the navigation. This research provides a new space motion for the evaluation of maneuverability and maneuvering test, so as to extract the new space motion's indexes that can clearly describe the maneuverability of the underwater vehicle. It complements the existing evaluation system of maneuverability for underwater vehicle.
