Method and device for low-noise underwater propulsion

Details Method and device for low-noise underwater propulsion Method and device for low-noise underwater propulsion

2005-02-08

2005-02-08

Sotelo, Jesus D. (Department: 3617)

Marine propulsion

Jet drive

C440S018000

Reexamination Certificate

active

06851990

ABSTRACT:
A method and apparatus is disclosed for producing propulsion underwater with minimal acoustical emission. In basic concept, the method comprises the expulsion and sucking of liquid into and out of a liquid port of a watercraft in a manner generating compression and expansion waves adjacent the liquid port. Such expansion and compression waves generate a positive net thrust on the watercraft in a direction opposite that of their expulsion. A reciprocating member and an actuator are also disclosed for generating the forces and energy necessary to create the expansion and compression waves.

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