(Dr. David Trivett, advisor)

"Development of a Cardioid Sensor for Conformal Hull Arrays"

Abstract

Submarine hull arrays utilizing CAVES technology require thick compliant baffles to isolate the acoustic sensor from self-noise.  These compliant baffles compress with depth, resulting in significant ship impact.  One means of eliminating the need for thick baffles is through the use of directional sensors which have little or no response in the backward direction.
This thesis presents the development of a cardioid sensor, along with the necessary shading coefficients, which null hull flexural waves. Both theory and measurements are presented.