Sonobuoy – Electronic Function Selector (EFS) Replacement

Period of Performance: 09/17/2007 - 09/17/2009


Phase 2 SBIR

Recipient Firm

SEA Corp.
62 Johnny Cake Hill Array
Middletown, RI 02842
Principal Investigator


Present sonobuoys require manual selection and verification of functions such as RF Channel, Depth, etc. with selection and verification impossible while the sonobuoys are loaded in the launcher or in the storage racks onboard. The capability to select and verify functions while the sonobuoys are loaded in the launcher or in onboard storage racks would save time and permit more operational flexibility permitting in-situ adjustments in a constantly-changing tactical environment. This could be accomplished using a direct operator interface to the multi-mission maritime aircraft (MMA) mission computer for all on-board launchers as well as storage racks. A wireless, battery-operated, handheld device useable in low light conditions that can interface to a standard personal computer (PC) could be used to facilitate individual buoy interrogation and set up. SEA CORP investigated and evaluated the potential of several wireless technological alternatives that would permit wireless programming via a handheld or rack-mounted device and concluded that infrared would prove the optimum data transfer method. Evaluation criteria included cost-effectiveness, PC interface, adaptability to the MMA, reliability and the ability to operate in various environments while minimizing interference with organic aircraft systems.