´An improved propulsion system for marine vehicles´

This work concerns the generation of force from a peripheral nozzle at the front of an aerodynamic shaped body by the utilisation of the Coanda effect. It is found that the manipulation of the jet (envelope) distribution over the body surface may be manipulated to control the attitude and direction of the body in a water environment. Tests indicate that such devices have advantages over existing methods in manoeuvrability and in the reduction of drag.