Low frequency underwater acoustic radiator

Details Low frequency underwater acoustic radiator Low frequency underwater acoustic radiator

1992-08-13

1993-08-03

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367141, 367176, 181110, 181121, 181142, H04R 2300

Patent

active

052335704

ABSTRACT:
Low frequency underwater acoustic radiator apparatus includes an air-trapping chamber with a lower portion open to the water, characterized by a mean density higher than that of water. A closed, rigid float element having a mean density equal to or lower than that of water is disposed with a selected loose fit within the chamber. When the chamber and float combination are submerged in water with a substantially vertical orientation of the chamber, the float element floats within the chamber, with the trapped air functioning as a spring coupling. A vibromotive element is coupled to the float element or the chamber element to induce oscillation of the coupled element. The coupling of the chamber and the float by the air spring converts the dipole oscillation of the oscillating element into a monopole pulsation suitable for a low frequency underwater sound radiator. The resonant frequency of the assembly can be changed by altering the volume of air in the chamber, or by changing the depth at which the device is submerged.

REFERENCES:
patent: 485726 (1989-12-01), Myers
patent: 1791014 (1931-02-01), Settegast et al.
patent: 3143999 (1964-08-01), Bouyoucos
patent: 3277437 (1966-10-01), Bouyoucos
patent: 3403374 (1968-09-01), Mellen et al.
patent: 3610366 (1971-10-01), Goldberg
patent: 3741333 (1973-06-01), Muniz et al.
patent: 4142171 (1979-02-01), Pickens
patent: 4153134 (1979-05-01), Yang

Affiliated with

Also associated with

Rating

Low frequency underwater acoustic radiator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low frequency underwater acoustic radiator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low frequency underwater acoustic radiator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2277240