公开(公告)号：AU769905B1

公开(公告)日：2004-02-05

申请号：AU4982790

申请日：1989-12-22

Applicant: LOCKHEED CORP

Inventor： STEARNS CLEO MILFORD ,  ERICKSON DAVID JUSTA ,  IZZO LOUIS MANUEL

IPC: B06B1/06 ,  H04R1/26 ,  H04R1/44 ,  H04R15/02

Abstract: The assembly may be operated at low and/or high frequencies in a sonar array. It comprises a low frequency unit of tonpilz design including a low frequency driver 18, a low frequency tail mass 19 and a composite head mass 16, the composite head mass acting as a single low frequency water driving piston and comprising a plurality of high frequency units 25 forming individual high frequency water driving pistons. The high frequency units are also of tonpilz design, with independent drivers 24, independent head masses, and a common tail mass 22. The use of a common tail mass simplifies the design without compromising high frequency operation. The design leads to more efficient operation at both frequencies by minimizing the head mass to tail mass ratios.