A reaction propulsion system for boats

摘要

934,586. Hydraulic jet propulsion apparatus. R. PERRIER, and J. COMBARD. Nov. 28, 1961 [Nov. 29, 1960; Nov. 23, 1961], No. 42511/61. Classes 113 and 114. An hydraulic jet propulsion apparatus comprises two pipes 37, 371 which are arranged symmetrically with respect to the longitudinal axis of the craft and which project through the transom 48 of a boat to discharge water from a pump 32, driven by a motor 31, above the normal water-level of the craft. Each pipe 37 or 371 is provided with a reversing deflector 49 which may be moved vertically in the tubes 46 and 47 by a mechanical linkage extending from a command position (not shown), from a retracted position where the bore 50 aligns with the pipe 37 or 371 to a deflecting position, shown in Fig. 11, where the jet is deflected forward by the groove 51. A valve 38 is provided at the junction of the pipes 37, 371 which is rotated by a mechanical linkage (not shown) from the command position so as to vary the output from each pipe 37 or 371 so that the craft may be steeerd. The reversing deflector may be disposed at the junction of the pipes 37, or 371 and a valve may be provided adjacent the outlet of each pipe. The Specification describes a resilient, e.g. rubber, mounting for the pump and motor.