Non-turbulent pull down eye for buoyant test vehicle

Details Non-turbulent pull down eye for buoyant test vehicle Non-turbulent pull down eye for buoyant test vehicle

1994-12-21

1995-10-31

Sotelo, Jesus D.

Ships

Towing or pushing

Coupling means

441 7, 114218, B63B 2158

Patent

active

054620007

ABSTRACT:
A non-turbulent, retractable pull-down eye assembly for use in hauling a yant test vehicle down to a release depth. The assembly is contained within the tail housing of the vehicle and is extended from the tail housing when the vehicle is to be hauled down. A hook and cable is attached through an eye in the extended portion of the assembly and the cable is winched to pull the vehicle below the surface. When the buoyant test vehicle reaches the prescribed depth, an acoustic signal is used to release the hook. The assembly is spring loaded within the tail housing such that, upon release from the hook, the extended portion retracts back into the tail housing as the vehicle rises to the surface. The exposed surface of the assembly when in the retracted position is shaped to conform to the shape of the buoyant test vehicle tail housing. The pull-down eye assembly thus retracted does not contribute to any turbulence around the tail housing during vehicle ascent.

REFERENCES:
patent: 3897746 (1975-08-01), Jamieson
patent: 4788927 (1988-12-01), Casey
patent: 4890566 (1990-01-01), Morris

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