Accession Number : ADD010521

Title :   Sonobuoy Launcher System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Dragonuk,Leo

Report Date : 28 Apr 1981

Pagination or Media Count : 5

Abstract : A pneumatic restraint and ejection system for a multiple sonobuoy launcher having a single plenum communicating through separate clack valves to the inboard ends of a plurality of launcher girdles about the launch tubes. After sonobuoys are inserted into the launch tubes, the plenum is charged with compressed air with the clack and girdle valves positioned to impart an ejection force on the backs and a longitudinal restraining force on sides of the sonobuoys. A sonobuoy is ejected by actuating the girdle valve to shut off the plenum air to the girdle and to exhaust the air in the girdle. As the sonobuoy leaves its launch tube, the air behind the sonobouy expands causing a sudden differential pressure between the plenum and the tube to cause the clack valve to close and prevent loss of plenum pressure through the empty launch tube.

Descriptors :   *Patents, *Sonobuoys, *Launchers, Air launched, Pneumatic devices, Restraint, Inflatable structures, Ejection, Compressed air, Low pressure, Plenum chambers, Pneumatic valves, Antisubmarine aircraft, Launch tubes

Subject Categories : Patrol and Reconnaissance Aircraft
      Hydraulic and Pneumatic Equipment
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE