Impulsive Snap-Through Acoustic Pulse Generator
Patent, Filed 21 Oct 97, patented 13 Apr 99
DEPARTMENT OF THE NAVY WASHINGTON DC
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An impulsive snap through acoustic pulse generator may be used to generate an acoustic pulse in an aqueous environment without gas bubbles. The impulsive snap through acoustic pulse generator includes a support structure having an open end a resilient shell mounted to the support structure to define a chamber, and a gas vent in fluid communication with the chamber through which a gas passes for changing the pressure in the chamber so that the resilient shell transitions from a first stable state to a second stable state, thereby generating an acoustic pulse.