公开(公告)号：US20150302843A1

公开(公告)日：2015-10-22

申请号：US14689442

申请日：2015-04-17

Applicant: LOCKHEED MARTIN CORPORATION

Inventor： Russell M. SYLVIA ,  Patrick J. KELLY ,  Martin C. LEWIS

IPC: G10K11/18 ,  G10K13/00

CPC classification number: H04R1/44 ,  G10K9/13

Abstract: 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.

Abstract translation: 描述了一种用于通过水投射声能的水下声学投影仪。 声学投影仪包括限定内腔的壳体，壳体中的多个孔，其将内腔与外部环境流体连通;在第一端设置在内腔中的声挡板，其流体地密封 来自外部环境的内部空腔以及在内部空腔的第二端处设置在内部空腔中的投影仪面。 投影仪面包括设置在外隔膜和内隔膜之间的活动活塞。 磁体固定在声挡板和投影仪面之间的内腔中，并且活动线圈连接到活塞并相对于磁体布置，以便由磁体驱动，从而驱动活塞。