GB1190735A - Improvements in or relating to Steering Means for Vessels employing Hydraulic Jet Propulsion - Google Patents

Abstract

1,190,735. Water-jet propulsion. U.A. ENG. Ltd. 8 May, 1967 [7 May, 1966], No. 20326/66. Heading B7V. In water-jet propulsion apparatus for a water-borne vessel, a pair of part-cylindrical deflectors 2 are attached to a duct 1 so that they are capable of pivotal movement about a common vertical axis X-X intersecting the longitudinal axis Y-Y of said duct to bring either or both of them into the path of a jet of water that issues from said duct and thereby effect either steering of the vessel while it is being propelled by said jet in a generally forward direction or propulsion of the vessel astern. When the vessel is to be propelled directly astern, both of the deflectors are placed equally in the path of the jet in abutment with each other, the jet being deflected downwardly between a plurality of arcuate vanes 15 in the lower wall of said duet and by a curved portion 11 on each deflector. In a modification, Fig. 3 (not shown), the vanes 15 are placed in the lower wall 9 of each deflector. Steering can be effected while the vessel is being propelled astern by either pivotal movement of both of the deflectors in one direction or the other, or pivotal movement of one of the deflectors away from the other.