Modern ships typically have a number of distributed systems. Next generation integrated power systems ngips for the. Zonal electrical distribution systems in large ships. Propeller optimisation consideringsheet cavitation and hull. Safety precautions must always be taken when working around electri. Oct 26, 2006 for main ship propulsion duty and an electric propulsion system motor rated at 5000 horsepower for more economical ship propulsion duty whenever practical, termed the auxiliary propulsion system aps. For a given ship design, the decision on whether to install an mvdc casualty power system will be based on risk and a comparison of the cost and system weight of the mvdc casualty power to the cost and system weight of effectively armoring and protecting the port and starboard buses from damage within a zone.
Notwithstanding the fact that all engineering design should be prepared to be the best. A sub zone electrical distribution system design for handling non zonal loads. In particular, it describes an effective way of capturing a complete set of customer requirements based on the universal navy task list untl and allocating these required functions to system packages comprised of hardware, software, and. Change in the position and amount of heat radiated from the sun affect the requisite cooling and heating of a zone. We will try to see how it affects the design later. Assuming same power density of power system for small ship, adding 1 ton of payload requires roughly an additional 9 tons of ship for large ship, adding 1 ton of payload only requires roughly an additional 1.
Leveraging our significant experience in component design and system deployment, our products and systems can be found on a variety of ship classes ranging in complexity from nuclear submarines to surface combatant support ships. Distributed systems are used because its simpler, cheaper, and better to centrally produce a commodity such as electricity or chill water, than to locally produce it with the users of the commodity. An arsenal ship design tsse faculty chuck calvano, tsse program head, ship design bob harney, combat systems fotis papoulias, naval architecture. The im provides ac power to the ship service loads located in that zone. Introduction nowadays, vessels electrical power demand is increasing. Integrated zonal power management systems from ajs power source can be easily deployed in multiple locations throughout todays naval ships to ensure operational readiness for essential systems. The vulnerability is assessed on representative ships that are generated based on the systems required for the ship missions.
Relationships used in ship design can be divided into 4 main types. The qos metric measures the ability of sps to reliably provide electric power to the. Swbs is linked to design features and functional characteristics of the ship, providing adequate information for estimating in the early design stage. Survivability approach for advanced ship design safety and damage control figure 1. Shipboard zonal electrical power management system electric. Integrated shipboard power management systems from ajs power source will meet zonal power requirements and navy electric ship requirements. Pdf systems engineering and zonal ship design semantic scholar. This luminaire is a great addition to any commercial or industrial wall mount application and complies with dark sky.
Preliminary design determination of the main hull dimensions and of some form coefficients determination of the elements necessary and sufficient to. Service qos metric to aid in the design, design certification and operation of shipboard power systems and further defined the metric as based on the probability that the power system will provide the continuity of power that each load needs to support the ship s missions 2005, p. Crossplatform validation of notional baseline architecture. A twolevel topology design framework for reliable shipboard. This is a learned expertise and as such will be difficult to apply to more complex zone systems. Specifications and standards for the electric warship. Genetic optimization mogo to explore the design space for nondominated ship design solutions based on design effectiveness, risk, and cost. May 01, 2017 the authors hope that the perspective presented here provides designers with a reliable way forward when considering architectural design of distributed ship service systems in earlystage ship design. Apr 22, 2016 for a given ship design, the decision on whether to install an mvdc casualty power system will be based on risk and a comparison of the cost and system weight of the mvdc casualty power to the cost and system weight of effectively armoring and protecting the port and starboard buses from damage within a zone. Ship operational capabilities rely on the resiliency of onboard systems in all situations, included damaged conditions, and require comprehensive design evaluation to identify weaknesses in system concepts. Investigating physical solutions in the architectural.
Aisbased coordinated and adaptive control of generator. Ventura design process 15 stages do ship design 1 1. Assistant professor, department of electrical and computer engineering. Esrdc electric ship research and development consortium. The sea 1180 project seeks to replace 4 singlerole vessel classes, comprising of 26 ships, with one multirole vessel class of around 20 offshore combatant vessels ocv. Ips design opportunities approved for public release 17 support high power mission systems reduce number of prime movers improve system efficiency provide general arrangements flexibility improve ship producibility support zonal survivability facilitate fuel cell integration 9232019. Hbcm to create the zone outfitting method zofm and the zone painting. Session 2 current practices in systems engineering for navy ships part 1 u. Advantages and drawbacks of each structure are highlighted. Methods for analyzing early stage naval distributed. Figure 3a,b show a simplified diagram of an ac zed system proposed in 10 and a dc zed system considered by the electric ship research and development consortium esrdc 2,12, respectively. The electric ship research and development consortium esrdc brings together in a single entity the combined programs and resources of leading electric power research institutions to advance near to midterm electric ship concepts.
This relation ship between the leading eof and the timemean flow in the pacific sector differs from that observed for the hemispheric zonal mean or the atlantic sector zonal mean flow. The chosen optimal propeller display reduced pressure pulses and cavitation extent while maintaining the efficiency of the original design. Additionally, the consortium addresses the national shortage of electric power engineers by providing educational. The wprl full cutoff wall pack has a classic familiar design and is best suited for entrances or anywhere controlled security lighting is required.
Pdf systems engineering and zonal ship design semantic. Zonal ship s service loads zonal ship s service loads zonal ship s service loads zonal ship s service loads figure 1. Ship design myths of the 1980s computer architecture will never be distributed combat systems will not need modernization in less than 7 years increase in space and weight will always cause increase in construction costs a compact ship is cheapest development of open interface standards are impossible. In particular, there a s consequences regarding engineering and design, ship work break. In section 2, the basic configuration of the ship power system is described. Manual for naval surface shipdesign technical practices. A converter module cm is connected to each pdcb in each zone. These documents are not ship specific, and those that are important to the design and. This thesis presents a process and tool for ship vulnerability analysis in early stage ship design. Investigating physical solutions in the architectural design. Commercial protection practices applied to naval power.
Vulnerability is defined as the probability of ship kill after taking damage from a weapon. This is required in every stage of a ship project, right from the inquiry and concept design stage, to basic, detail and production design, and continues through definition of asbuilt structure, maintenance work breakdown structure, etc. The use of computers in ship design has shown its advantage in processing information within a short time. In order to investigate these design issues, a dc distribution testbed has been constructed at the university of. Zonal ship design abstract modern ships typically have a number of distributed systems. This dissertation presents novel network theorybased methods for better understand ing and analyzing the implications of early stage distributed system design decisions. The zonal electrical distribution zed is emerging as one of the most suitable candidate power system architecture to achieve these objectives 10,11. The zonal electrical distribution zed is emerging as one of the most suitable. To adequately capture the complex characteristics of the sps during the recon. Medium voltage direct current mvdc casualty power sbir. As a result, group technologybased sh ethods have been developed and implemented ov these new cnstructiontechnologi the manner in which naval ship ac is, or should be, conducted. When combined with zonal distributed systems design, this consistent approach to mission system design assures a minimum level of zonal survivability while minimizing design iterations in the earliest stages of design. Navsses upgrades machinery control points of interest system. General topology for notional baseline system models pgmpower generation module, vsdvariable speed drive, pmpropulsion motor the objectives in this effort go beyond the definition of the baseline models.
Thus, the need for transforming relationships into numerical form. Engineering management for zone construction of ships onepetro. This is a learned expertise and as such will be difficult to. We address the issues of levels of detail in models, definition of model. Guidelines for the specification of models to be used in. Also, an increased number of electrical loads were planned for this ship making a 450 vac design infeasible. At the ship level, zonal survivability facilitates the ship, when experiencing internal faults in adjacent zones due to design threats, to maintain or restore the ships primary missions as required by the design threat outcome. For naval warships, in addition to cost, two measures of. Deactivation diagram development for naval ship system. Demand factor curve based on connected load 19 figure 6.
Series lumens driver cct ql2 2ft qwiklink strip 122025l lumen selectable u 120277v ccts. Total ship system engineering tsse 1996 student capstone project an arsenal ship design tsse faculty chuck calvano, tsse program head, ship design bob harney, combat systems fotis papoulias, naval architecture bob ashton, shipboard electrical power. Uss makin island lhd8, a waspclass amphibious assault ship, is the first u. Depending on the available funding, cvn 77 could also be the test bed for systems such as multifunctional, embedded antennas which could replace many of the radar and other antennas that currently populate the islands of existing carriers. Naval ship preliminary arrangements for operability and. The dc voltage on the scaled medium voltage busses are denoted v. Zonal shipbuilding is the modern advanced mode of construction,it has some advantages,such as improving the quality of ship construction,shortening the shipbuilding cycle,and being convenient for modernization. Concept design definition of the ship type, deadweight, type of propulsion, service speed. Total ship systems engineering manning navy department crew ship support combat sys 52 engineering 34 air det. Widening of the existing roads under the master plan of the city or town zonal development plan or in the layout plan.
Realtime electric load management for dc zonal all. In 2009, the government expressed its intent to rationalise the navys patrol boat, hydrographic, and mine countermeasures mcm ships in efforts for greater operational efficiencies and reduced cost of ownership 1. The ncds relies upon the military handbooks, specifications and standards in addition to design data sheets. The other performance criterion, continuity of service, is measured using quality of service qos metrics 6,7. Ship level zonal survivability focuses restoration efforts on the damaged zones, simplifying the efforts required. Citeseerx document details isaac councill, lee giles, pradeep teregowda. There are no geographical or zonal boundaries using swbs. Methods for analyzing early stage naval distributed systems. Development plan means a plan for the development or redevelopment or improvement of the area within the jurisdiction of authority and includes perspective plan, master plan, zonal development plan and part zonal plan area development plan prepared under the relevant acts. Opposite cms are connected to a zonal dc bus zdcb which supplies power to the inverter module im in each zone.
A medium voltage dc testbed for ship power system research. The relationship between logical architecture, physical architecture, and physical solutions affects all aspects of the vessel. Operators and experimentalists use their developed understanding of ship and system performance to adjust reference cell potentials so that over and under protection does not occur. Pdf this paper relates the defense acquisition university defined systems engineering process to zonal ship design at the concept and feasibility. Keywordsenergy storage, islanding, power quality, ship. Ship distributed systems design analysis using network. Total ship systems engineering cpcx combined patrol. Electric system overview shipboard electrical components are cooled by the. Zonal design develops components into drawings consistent with the work breakdown. The system includes two generation systems gs1 and gs2, a ship propulsion system sps, a pulsed power load ppl, as well as lowerpower zonal dc distribution system.
Total ship systems engineering design process preliminary design feasibility study. Zonal jet structure and the leading mode of variability. Adjacency of certain spaces to a wtb or damage control zone boundary. Dc zonal loads bus 1 2mw bus 2 pm1 bus 3 dc zonal loads 2mw 2mw dc zonal loads bus 4 bus 5 bus 6 bus 8 pm2 bus 7 pulsed load 2 pulsed load 1 10 mw 3s duration em launcher 40 mw 0. To implement zonal shipbuilding,the problem of zonal design,which is an important basis for zonal shipbuilding,should be solved first.
The vulnerability is assessed on representative ships that are generated based on the systems required for the ship. In addition, a dc zone topology and a power flow control strategy are proposed. This paper defines a number of key terms, details a number of different zonal architectures, describes the situations where the architectures are best suited and proposes a framework for zonal ship design that promises to satisfy survivability performance requirements and quality of service requirements. Naval combatant design specification ncds describe requirements at the total ship and the ship system level for nonnuclear naval surface warships. This paper relates the defense acquisition university defined systems engineering process to zonal ship design at the concept and feasibility design level. Integration of safety studies into a detailed design phase. Contrast zonal design with the current design methodology. Taking into account existing data, readiness of techniques, and ship availability, the us ssc recommended two planning workshops to prepare implementation plans for a 1 north atlantic zonal section in 2010 and 2 pacific northsouth and south pacific eastwest sections in later years. Fixture construction allows for standard 10% uplight. Based on the characteristics of surface ship system. Ship design myths of the 1980s computer architecture will never be distributed combat systems will not need modernization in less than 7 years increase in space and weight will always cause increase in construction costs a compact ship is cheapest development of open interface standards are. A zonal design can be affected by any one or a combine effect of the following factors.
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