UNDERWATER ACOUSTIC PROJECTOR

摘要

An underwater acoustic projector for projecting acoustic energy through water is described. The acoustic projector includes a housing defining an internal cavity, a plurality of apertures in the housing that place the internal cavity in fluid communication with an external environment, an acoustic baffle disposed in the internal cavity at a first end that fluidly seals the first end of the internal cavity from the external environment, and a projector face that is disposed in the internal cavity at a second end of the internal cavity. The projector face includes a movable piston disposed between outer and inner diaphragms. A magnet is fixed within the internal cavity between the acoustic baffle and the projector face, and a moving coil is connected to the piston and arranged relative to the magnet so as to be driven by the magnet thereby driving the piston.

主权项

1. An underwater acoustic projector for projecting acoustic energy through water, comprising:
a housing defining an internal cavity having a first end and a second end; a plurality of first apertures in the housing that place the internal cavity in fluid communication with an external environment; an acoustic baffle disposed in the internal cavity at the first end thereof that fluidly seals the first end of the internal cavity from the external environment; a projector face disposed in the internal cavity at the second end thereof, the projector face including a movable piston disposed in a space between an outer diaphragm and an inner diaphragm; a magnet fixed within the internal cavity between the acoustic baffle and the projector face; and a moving coil connected to the piston, the moving coil is arranged relative to the magnet so as to be driven by the magnet and thereby drive the piston.