Patent ID: 7548489

Claim:
A method for modeling underwater acoustic projection apparatus, said method comprising: (a) defining plural component parameters, said component parameters relating to components of underwater acoustic projection apparatus, said components including a capacitance component, two inductance components, and an elastic component, each said inductance component including a matrix and a spiral-coiled electrical conductor embedded in said matrix, said elastic component being interposed between and abutting said matrices, said capacitance component being electrically connected to said spiral-coiled electrical conductors in inductance-capacitance circuitry in which said capacitance component represents the capacitance and in which said spiral-coiled electrical conductors represent the inductance, said component parameters including: the number of turns in each said spiral-coiled electrical conductor; the electrical resistance of each said spiral-coiled electrical conductor; the spring constant of said elastic component; the separation between said matrices in the absence of operation of said underwater acoustic projection apparatus; and the radius of each said matrix; (b) defining plural operation parameters, said operation parameters relating to operation of said underwater acoustic projection apparatus, wherein during operation of said underwater acoustic projection apparatus voltage input into said inductance-capacitance circuitry results in oscillation toward and away from each other of said two inductance components, said oscillation being associated with electromagnetic resonance of said inductance-capacitance circuitry and with mechanical resonance of a spring-mass system in which said elastic component represents the spring and in which said entrained water represents at least substantially all of the mass, said underwater acoustic projection apparatus producing pressure waves in said water in association with said electromagnetic resonance and said mechanical resonance, said pressure waves being associated with sound radiated by said underwater acoustic projection apparatus, said operation parameters including: the amount of said voltage input; the water depth of said underwater acoustic projection apparatus; and the mass of said entrained water; (c) determining the amount of said sound radiated by said underwater acoustic projection apparatus, said determining including using the defined said component parameters and the defined said operation parameters in a mathematical relationship, said mathematical relationship including said voltage input, said electromagnetic resonance, said mechanical resonance, and said sound radiated by said underwater acoustic projection apparatus.