Reliability centered modeling for development of deep water Human Occupied Vehicles

Abstract Human Occupied Vehicle operations are required for deep water activities such as high resolution bathymetry, biological and geological surveys, search activities, salvage operations and engineering support for underwater operations. As this involves direct human presence, the system has to be extremely reliable. Based on applicable standards, reliability analysis is done on 5 key representative functions with the assumption that the submersible is utilized for ten deep water missions per year. Analysis is done on the results obtained to find the influence of the subsystems on the reliability of the overall submersible. Analysis include, influence of battery technologies and reliability centered battery and hydraulic system configurations. Dependence of seal sizes and seal seat surface finish on the leak tight integrity of the personnel sphere is also discussed. It is found that for submersible housing 75 kWh energy storage batteries, the probability of failure of the hard tank buoyancy ascent function with lead acid batteries configured for 300 V terminal voltages and non-redundant hydraulic configuration is 37.74%. The probability of failure can be reduced to 5.24% with lead acid batteries with terminal voltage configured to 120 V and with redundant hydraulic configuration. The results presented shall serve as a model for designers to arrive at the required trade-off between the capital expenditure and the required reliability.

[1]  D. Linden.  Handbook Of Batteries , 2001 .

[2]  Naehyuck Chang,et al.  Hybrid electrical energy storage systems , 2010, 2010 ACM/IEEE International Symposium on Low-Power Electronics and Design (ISLPED).

[3]  C Brown,et al.  Using a novel vehicle conceptual design utility to evaluate a long-range, large payload UUV , 2010, OCEANS 2010 MTS/IEEE SEATTLE.

[4]  Daniel H. Doughty,et al.  A General Discussion of Li Ion Battery Safety , 2012 .

[5]  J Bement Laurence,et al.  A MANUAL FOR PYROTECHNIC DESIGN, DEVELOPMENT AND QUALIFICATION , 2013 .

[6]  Paul C. Butler,et al.  Reliability of valve-regulated lead-acid batteries for stationary applications. , 2004 .

[7]  Robert Panish,et al.  Achieving high navigation accuracy using inertial navigation systems in autonomous underwater vehicles , 2011, OCEANS 2011 IEEE - Spain.

[8]  Andreas Poullikkas,et al.  Overview of current and future energy storage technologies for electric power applications , 2009 .

[9]  D. Sathianarayanan,et al.  Challenges in realizing robust systems for deep water submersible ROSUB6000 , 2013, 2013 IEEE International Underwater Technology Symposium (UT).

[10]  Wei Zhou,et al.  Battery behavior prediction and battery working states analysis of a hybrid solar-wind power generation system , 2008 .

[11]  Ali Dadrasi.  On the Effect of Imperfection on Buckling load of Perforated Rectangular Steel Plates , 2013 .

[12]  John W. Hutchinson,et al.  Imperfection Sensitivity of Externally Pressurized Spherical Shells , 1967 .

[13]  Carl T.F. Ross,et al.  Collapse of dome cup ends under external hydrostatic pressure , 2000 .

[14]  William Kohnen.  Manned Research Submersibles: State of Technology 2004/2005 , 2005 .

[15]  V. Vadivelan,et al.  Technology Tool For Deep Ocean Exploration ¿ Remotely Operated Vehicle , 2010 .

[16]  Weicheng Cui,et al.  An overview of buckling and ultimate strength of spherical pressure hull under external pressure , 2010 .

[17]  Weicheng Cui,et al.  Structural Optimization for a Spherical Pressure Hull of a Deep Manned Submersible Based on an Appropriate Design Standard , 2012, IEEE Journal of Oceanic Engineering.

[18]  D. Sathianarayanan,et al.  Deep sea qualification of remotely operable vehicle (ROSUB 6000) , 2013, 2013 IEEE International Underwater Technology Symposium (UT).

[19]  D.S. Necsulescu,et al.  Fusion of inertial and kinematic navigation systems for autonomous vehicles , 1993, Proceedings of VNIS '93 - Vehicle Navigation and Information Systems Conference.

[20]  Y Iwai,et al.  Sea trials and supporting technologies of manned submersible Shinkai 6500 . , 1990 .

[21]  G. A. Ramadass,et al.  Reliability-Centered Development of Deep Water ROV ROSUB 6000 , 2013 .

[22]  Dan Li,et al.  Reliability and safety analysis of an Underwater Dry Maintenance Cabin , 2010 .