Abstract
Preliminary Designing Method of External Pressure Vessels for Sea Subsurface ApplicationsThis paper describes a unique engineering method intended for the preliminary designing of marine echo-location systems. The solved designing problem consists in determining geometrical parameters and selecting structural materials for a vessel of a buoyancy necessary to contain measuring instruments of a given mass, as well as its maximum gabarites and operational submersion depth. The assumed variability range of the system's parameters determines a space of permissible applicability parameters of the method. Stress level related to permissible and critical stresses was assumed to be safety criterion for the vessel. The method may be applied also to solving converse problems consisting in determining maximum permissible submersion depth for a vessel made of assumed structural materials and having given geometrical parameters. The presented description of the method is illustrated by an example of its application.
Highlights
Tight submerssible vessels intended for the fulfilling of assumed functions deep in water, capable of carrying large external hydrostatic loads find many civil and military applications such as submarines and submersible vehicles, bathyscaphes, crude-oil and gas storage tanks, or casings for measurement apparatus to conduct underwater oceanological experiments [ 3]
The measuring, recording and investigating of physical fields of seas and oceans is conducted by means of echo-location systems (Subsurface buoy mooring systems) composed of such elements as: − floats − vessels containing measuring and recording apparatus − vessels containing electric storage batteries − anchoring device in the form of ballast − tension members joining elements of a module
The designing problem consists in determining geometrical parameters and selection of a structural material for a vessel of a given effective buoyancy, capable of accommodating measurement apparatus of a given mass and dimensions, at a given operational submersion depth
Summary
Tight submerssible vessels intended for the fulfilling of assumed functions deep in water, capable of carrying large external hydrostatic loads find many civil and military applications such as submarines and submersible vehicles, bathyscaphes, crude-oil and gas storage tanks, or casings for measurement apparatus to conduct underwater oceanological experiments [ 3]. The measuring, recording and investigating of physical fields of seas and oceans is conducted by means of echo-location systems (Subsurface buoy mooring systems) composed of such elements as: − floats (buoys of a required buoyancy) − vessels containing measuring and recording apparatus − vessels containing electric storage batteries − anchoring device in the form of ballast − tension members joining elements of a module. Applicability of the method is determined by ranges of permissible values of vessel’s form parameters, external pressure values as well as a kind of structural material. The method may be useful in particular for the preliminary designing of echo-location systems (Subsurface buoy mooring systems) within the area of: − designing their geometrical configuration − designing geometrical parameters of their vessels − selection of their structural materials − assessment of quantity of their mass − determining optimum design solutions in an assumed sense
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