Marine propulsion device with gaseous boundary layer for thrust

Details Marine propulsion device with gaseous boundary layer for thrust Marine propulsion device with gaseous boundary layer for thrust

1982-12-16

1986-09-16

Blix, Trygve M.

Marine propulsion

Jet drive

Having means to increase fluid drive means efficiency

440 45, B63H 1104

Patent

active

046119990

ABSTRACT:
A marine jet propulsion system for use as an inboard engine for boats is herein described. An engine or motor means is attached in a driving relationship to a pump and thrust output means. Heat generated by and rejected by the engine or motor is passed into the pump base for dissipation into the outputted jet thrust stream. Air and/or exhaust gas from the engine is ejected around the jet output stream to reduce against-the-hull and jet stream or thrust energy losses. Streamlining hull closures for the jet pump intake and output ports are provided to reduce system hull drag when not in use and to limit marine organism growth inside the pump.

REFERENCES:
patent: 207018 (1878-08-01), Cowles et al.
patent: 1662206 (1928-03-01), Paxton
patent: 3273333 (1966-09-01), Roulund
patent: 3643438 (1972-02-01), Barsby

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