Accession Number : ADD008246

Title :   Payload Release Mechanism.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Putman,Stephen G

Report Date : 27 Jan 1981

Pagination or Media Count : 8

Abstract : This patent discloses a sonobuoy having its component parts packaged within a cylindrical housing suitable for dispensing from an aircraft launcher and automatically deployable to a transponder mode in its descent through the air and water. On launching, a wind flap at one end of the housing opens to pull a lanyard attached to a drag chute retaining bag which is pulled off to release a chute. Upon water immersion, a circuit sensitive thereto energizes the sonobuoy electronics and fires a squib which releases compressed CO2 to extend an inflatable float bag to the outside of the housing. A bag retainer cap applies an outward force to a payload release mechanism jettisoning the chute and permitting the float bag to inflate, erect a flexible antenna therein, rise to the surface, also disengages the housing permitting it and components which are pulled out of the housing therein to descend freely in the water paying out a suspension and signal cable to a desired hydrophone operating depth. A sea anchor is unfolded and a hydrophone suspended at the end of the cable. The payload release mechanism includes a pair of retainer blocks, secured to the chute risers, extending into slots in the housing.

Descriptors :   *Patents, *Sonobuoys, *Deployment, *Aerial delivery, Inventions, Aircraft, Launchers, Floats, Parachutes, Hydrophones, Inflatable structures, Jettisonable equipment, Transponders, Housings

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE