A non-turbulent, retractable pull-down eye assembly for use in hauling a buoyant 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. (MM).


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Non-Turbulent Pull Down Eye For Buoyant Test Vehicle


    Contributors:

    Publication date :

    1994


    Size :

    16 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Buoyant Test Vehicle Polymer Ejection Nose Assembly

    W. H. Nedderman / R. Meunier | NTIS | 1996


    Imaging of turbulent buoyant jet mixing

    Helmer, David / Su, Lester | AIAA | 2006


    PREDICTIVE ENGINE PULL UP AND PULL DOWN IN HYBRID VEHICLE

    JOHRI RAJIT / YAMAZAKI MARK STEVEN / WANG XIAOYONG et al. | European Patent Office | 2015

    Free access

    Predictive engine pull up and pull down in hybrid vehicle

    JOHRI RAJIT / YAMAZAKI MARK STEVEN / WANG XIAOYONG et al. | European Patent Office | 2016

    Free access

    BUOYANT AERIAL VEHICLE

    NAKAMURA KOHEI | European Patent Office | 2018

    Free access