VERY LOW FREQUENCY HIGH POWER SONAR PROJECTOR

THE SEEMINGLY IMPOSSIBLE TASK OF PRODUCING ONE-HALF OF A MEGAWATT OF ACOUSTIC POWER UNDERWATER AT A FREQUENCY OF 5 HZ IS ADDRESSED. THE EXPLOITATION OF THE RECENT INTRODUCTION OF NEW RARE EARTH PERMANENT MAGNET MATERIALS, THE CONCEPT OF USING A FLEXURAL DISC RADIATOR, AND THE RECENT CULMINATION OF TWO YEARS OF ELECTRODYNAMIC TRANSDUCER DEVELOPMENT IS PROPOSED. THE USE OF MATHEMATICAL MODELING, EXPLORATORY DEVELOPMENT MODEL FABRICATION, AND EXPERIMENTAL MEASUREMENTS TO ASSIST AND VERIFY PERFORMANCE PREDICTIONS IS ALSO PROPOSED. THE OFFERER CITES SEVERAL RECENTLY DESIGNED, CONSTRUCTED AND TESTED UNITS OF HIS ORIGIN AND PROPOSES THE DEVELOPMENT OF AN ARRAY ELEMENT WHICH BENEFITS FROM EXTENSIVE DEVELOPMENT ALREADY ACCOMPLISHED. THE CONSIDERATION OF A PISTON-TYPE RADIATOR AS WELL AS FLEXURAL TYPES IS RECOMMENDED. THE POSSIBILITY OF CONSTRUCTING A FULL-SCALE ARRAY ELEMENT USING A COMPANY-OWNED MAGNET ASSEMBLY IS DISCUSSED.