Communications – electrical: acoustic wave systems and devices – Transponders – Sonobuoys and sonobuoy systems
Patent
1975-11-28
1981-11-03
Farley, Richard A.
Communications, electrical: acoustic wave systems and devices
Transponders
Sonobuoys and sonobuoy systems
244138R, H04B 159
Patent
active
042989639
ABSTRACT:
Apparatus or a device for use in the jettisoning and flotation of a susped load, particularly an underwater listening buoy, comprises a parachute for suspending the load during descent between jettisoning and flotation, and at least one inflatable float for maintaining the load at a predetermined depth in a body of water. The float comprises a pillow-shaped inflatable ballonet fixed in the central portion of the parachute. It may have an inflation sleeve coupled at one end to the ballonet for inflating the ballonet with the superatmospheric pressure generated by the descent of the parachute. A tension member may be provided fixed at one end to the free end of the sleeve and at its other end to the load so as to extend the sleeve downwardly during descent. The inflation sleeve preferably is of frustoconical form and divergent toward its lower free end. A releasable fastening device is provided such that the load is released from its normal sling connection when the apparatus enters the water, and is thereafter supported at a predetermined depth by a member coupling it with the float ballonet. In one embodiment the releasable fastening device comprises part of the cover of a container comprising the load, and in another embodiment the releasable fastening device is a rocking fastener connected between the inflation sleeve and the load. A whip antenna is carried by the ballonet.
REFERENCES:
patent: 3328750 (1967-06-01), Gimber et al.
patent: 3889224 (1975-06-01), Reed et al.
Dejob Roger M.
Tardivon Marcel P.
Etat Francais represente par le Delegue Ministeriel pour l'Armem
Farley Richard A.
Hinds William R.
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