SHIPBOARD PROPULSIVE COMPLEX AND METHOD OF CONTROL OF FLUID FLOWS Russian patent published in 2006 - IPC B63H21/17 

FIELD: shipbuilding; construction of propulsive and/or steering complexes at least partially surrounded by water.

SUBSTANCE: proposed complex is provided with electric motor located in hermetic chamber formed by joints of complex and propeller shaft connected with electric motor. Propeller is mounted outside hermetic chamber. Complex is provided with units for building-up increased pressure in hermetic chamber by means of air or another filling medium whose conductivity increases with increase of pressure in chamber. This pressure may exceed pressure of water in compartment located under pressure. Method of control of fluid flows consists in sealing-up the chamber relative to pressure of surrounding medium and relative to other compartments of ship; pressure in chamber and composition of medium discharged from chamber under action of pressure built-up inside it are subjected to tracking. Heat conductivity of gaseous medium in chamber is increased by building-up increased pressure and removal of heat generated by electric motor which is in direct contact with chamber walls; then, heat is transferred directly to surrounding medium through chamber walls.

EFFECT: improved operational characteristics of propulsive complex.

21 cl, 1 dwg