Warship 2019: Multi-Role Vessels最新文献

{"title":"Norway's New Multi-Role Logistics and Support Vessel (LSV)","authors":"A. Aitken, S. Jones","doi":"10.3940/rina.ws.2019.09","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.09","url":null,"abstract":"This paper describes the key capabilities and features of the Royal Norwegian Navy’s new multi-role Logistics and Support Vessel, HNoMS Maud, and discusses the benefits and drawbacks of a multi-role vessel considering some typical operational scenarios. It examines some of the design challenges and constraints encountered due to the multi-role nature of the vessel and the implications of standards on the design.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123935663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studious Ship Design: A Review of UCL MSC Warship Designs","authors":"R. Pawling, C. Savage","doi":"10.3940/rina.ws.2019.15","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.15","url":null,"abstract":"It is more than 50 years since the UK MoD teaching of warship design moved from Greenwich to UCL, and the course has evolved into MSc Naval Architecture and MSc Marine Engineering courses covering both warships and other complex service vessels, with students from navies, governments and industry worldwide. This presentation will describe this years’ designs, outlining the technical solutions proposed to a diverse set of user requirements set by the academic staff. Some of the educational aspects and challenges of the design exercise course will also be described.\u0000\u0000Portions of this paper are reproduced from reference [1]; which provides a more detailed example of the work put into a typical MSc SDX ship design.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131911448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inline-Slot Ejector Diffuser for a Warship to Suppress IR Signatures","authors":"L. Singh, S. Singh, S. Sinha","doi":"10.3940/rina.ws.2019.17","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.17","url":null,"abstract":"The infrared (IR) signatures emitted by warships can substantially reduce the survivability chances while operating in the enemy area, as these signatures can be tracked and locked-on by the heat seeking missiles. The primary source for the IR signatures in a warship is the gases emanating from the exhaust of the gas turbine engine. These signatures can be suppressed by installing the passive infrared suppressors such as ejector diffusers, downstream of the turbine exhaust. The prime objective of an ejector diffuser is to reduce the exhaust gases temperature with minimal back pressure. In the present investigation, inline-slot conical ejector diffuser is numerically studied. From the open literature it is found that only step-slot ejector diffuser has been explored and no work on the inline-slot ejector diffuser is reported. Preliminary investigations on the inline-slot ejector diffuser show the performance to be better in terms of mass entrainment and static pressure recovery than the step-slot ejector diffuser, which is commonly used with warship power plants. The focus of the present study is to establish the effect of nozzle exit conditions (i) inlet swirl (S), and (ii) inlet turbulence intensity (TI) on the performance of inline-slot ejector diffuser. In the first part, inlet swirl is varied in the range 0≤S≤0.3 in step of 0.05, and in the second part TI is varied in the range of 1%≤TI≤15% in step of 3%. The performance is evaluated in terms of local and cumulative mass entrainment ratios, non-dimensional temperature distribution, and static pressure recovery. For the first part, it is seen that there is 3% drop in cumulative mass entrainment with the increase in swirl number from 0 to 0.3 and this can be attributed to the drop in potential core region. Higher wall temperatures in the mixing tube are observed for all the configurations with swirl cases. Static pressure recovery increases with the increase in the swirl number. For the second part, the effect of turbulence intensity on the performance of inline slot ejector diffuser is carried out. It is seen that the mass entrainment decreases by ~5% when turbulence intensity is increased from 1% to 15%. No significant effect of turbulence intensity is seen on the temperature distribution and pressure recovery.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126329782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-Role Vessels: Design, Manning & Cost Drivers","authors":"D. Smith","doi":"10.3940/rina.ws.2019.02","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.02","url":null,"abstract":"Informed by the Naval Design Partnering involvement in concept design for future UK warships and auxiliary vessels, this paper comments on the technological developments supporting the emergence of multi-role vessels in modern navies, including both manpower considerations and what modularity or flexibility means for the future cost-capability trade space for naval design. It refers to the future trends in naval surface ship designs and technologies, including expected trends in autonomy and unmanned systems. It challenges traditional views on deploying capability, considers the design and cost drivers for multi-role vessels and explores what this might mean in terms of how complexity impacts ship size and cost. A key consideration is how well the different roles can co-exist in one vessel, with examples given of different roles that would dovetail together well to address the concurrency requirement of different capabilities in a single ship. The paper reflects on the significance of naval manpower as the key through life cost driver for naval programmes, and the implications for the manning solutions and cost of future multi-role ship concepts.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125076895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE DEVELOPMENT OF A MODULAR MULTI-ROLE VESSEL FOR NAVAL AND COASTGUARD OPERATIONS","authors":"A. Humphries, L. Davies, C. Browning, J. Fox-Robinson","doi":"10.3940/rina.ws.2019.13","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.13","url":null,"abstract":"To deliver the full range of operational and support roles naval and coast guard forces typically employ many different types of specialist craft. Their specialist nature and the need for redundancy means that these craft are often under-utilised, spending much of their lives waiting for a particular requirement or incident to occur. As a result these critical and expensive assets can deteriorate through lack of use and become increasingly expensive to operate. A modular multi-role solution has been developed to address these issues. The system comprises a standard platform that can be fitted with one of a number of specialist modules. These self-contained modules can be rapidly exchanged to enable the craft to meet planned and unplanned operational and support requirements.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128013587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Use of CAD Systems to Manage Modularity in Multi-Role Warships","authors":"R. Fernández, E. P. Cosma","doi":"10.3940/rina.ws.2019.08","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.08","url":null,"abstract":"Modulation requires new approaches to the entire shipbuilding process, general arrangement for the warships need careful analysis of interaction and physical connection between modules: electrical, water, air conditioning, etc. and between modules and the elements surrounding them.\u0000The analysis of areas with high potential for modulation will lead, by the application of the criteria decided, to a selection of several standard modules to be designed in CAD systems for those cases where it is expected to achieve significant savings by producing series of modules.\u0000The appropriate application of the modularization theories demands a difficult exercise of coordination among the design of all the units, systems, zones or disciplines present in the compartments and also direct implications in constructive strategy which will require specific protocols for the correct implementation of the modules during the constructive stages.\u0000The implementation of new tools to handle modules in warships is particularly important since it remarkably simplifies the analysis, what leads to a high potential in the improvement of the coordination among design areas and disciplines, and consequently to a more efficient design.\u0000The typical outfitting and equipment modules for these areas shall be defined, interfaces to the equipment and specification of cables, pipes and air conditioning systems needed for the module. The goal will be to define a limited number of standard modules, which allows exploiting serial effects and containing a significant part of outfitting in order to achieve savings from pre-outfitting.\u0000But the concept of modularization has even a wider meaning for warships when thinking in modularity, not only oriented to the design and constructive advantages but also in the future evolution of these kind of ships in order to be reoriented easily towards different uses, future upgrades or changes that should be realized to be able to undertake different kind of missions thanks to an efficient Plug and Play system.\u0000The aim of this paper is to develop concepts and design solutions for modular machinery space, on-board automation and warship equipment. To achieve those possibilities, not only the modularity concept will be necessary, it also needs a clear vision of which will be the lifecycle of the warship and its present and future purposes or possible upgrades in order to create a design. CAD systems are essential tools to provide the vision and the base to design and simulate the different possibilities that a warship would be able to provide thanks to the application of a modular concept during its complete lifecycle.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114827995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Multi Role Combatant - Jack of All Trades, Master or None?","authors":"D. Andrews","doi":"10.3940/rina.ws.2019.03","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.03","url":null,"abstract":"For naval vessels Modularity is essentially a design style choice adopted to achieve both aspects of multi-role capability, namely, Flexibility (in deployment) and Adaptability (through life). This paper largely focuses on the second of these, which has been seen to be an attractive objective in Western naval vessel acquisition since the end of the Cold War. A paper to one of this series of warship conferences produced by the author a decade after the collapse of the Warsaw Pact was entitled “Adaptability – the Key to Modern Warship Design”. It particularly drew on the difficulties the author had experienced in establishing the case for the Future Surface Combatant (the precursor of the Type 26 Frigate), where the primary capability of this first post-Cold War combatant as a globally deployable class of warship was to demonstrate that Adaptability would be good value for money in an uncertain geopolitical environment.\u0000\u0000The current paper commences by revisiting the case for Adaptability nearly two decades on from that first consideration and whether the same drivers for Adaptability and advances in Modularity have made the case for multi-role combatants more convincing or whether they are still prone, if they are not truly “First Rate” designs, to be “Jacks of all trades, yet Masters of none?” Next the paper reviews past warship designs that have been inherently adaptable, leading on to consideration of \"margins\", the traditional way naval ship designers have been able to incorporate a measure of adaptability. However, non-ship design aware procurement authorities, have continued to squeeze seemingly generous margins as a short sighted means of achieving \"savings\" in the procurement element of defence budgets. There are of course other features, necessary to achieve Adaptability. Thus the paper explores how an adequate consideration of the ship architecture might provide an adaptable design and, specifically, how adopting Modularity to achieve this, can be explored early in ship design. Finally, leading on from the exploration of Adaptability, the paper concludes by a considering the Trimaran configuration. This configuration remains a highly attractive overall Style and ship configuration choice for future warships, precisely because it readily provides so many of the features that are seen to be appropriate in an Adaptable Multi-role Warship, which can be configured to avoid the Second-Rate “master of none” trap.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133711917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pushing the Limit: The Role Less Multirole Warship","authors":"R. Pawling, N. Bradbeer","doi":"10.3940/rina.ws.2019.10","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.10","url":null,"abstract":"Designing effective multirole vessels, particularly warships, is complicated by the potential for the roles, and the mix of roles, to change. Modularity is frequently suggested as an approach to addressing this problem. However, in most extant or near-term modular surface combatants, modularity only provides a limited multi-role capability and flexibility, with much capability inherent to the core vessel, and they might be described as “conventional vessels with modular characteristics”. This paper reports on a study conducted at UCL into the possibility of maximising the modularity of a warship to allow both flexibility in role and infrastructure but also the ability to customise the mix of capabilities of the vessel in multi-role configurations. The concept is derived from the overall topology of container ships and conversions that have been carried out on those vessels, with a minimum “seaframe” or framework into which combinations of capabilities can be added.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122015105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a Twin Stern Ramp Launch & Recovery System for Rigid Hull Boats on a Multi-Role Naval Vessel","authors":"N. L. Koh, D. Wong, Y. Tan, B. Chew, T. Gan","doi":"10.3940/rina.ws.2019.12","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.12","url":null,"abstract":"Deployment of fast response craft at sea is essential for a range of littoral missions including maritime security and search-and-rescue. Traditional launch and recovery of fast response craft like rigid-hull boats (RHB) employ side davits and cranes. In light of evolving technology, multi-role navy ships like the Republic of Singapore Navy’s Independence-class Littoral Mission Vessel have incorporated stern ramp Launch and Recovery Systems (LARS) to overcome the slower deployment times associated with cranes and davits. Twin stern ramp LARS are suitable for requirements of multi-RHB operability, while achieving faster craft launch and recovery with fewer deck crew required. The paper identifies the design considerations, safety considerations, and qualification process for twin stern ramp LARS.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122429049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"When is the Adaptable or Multi-Role Ship the Right Answer?","authors":"C. E. Moss, A. Kimber","doi":"10.3940/rina.ws.2019.04","DOIUrl":"https://doi.org/10.3940/rina.ws.2019.04","url":null,"abstract":"The rise of the multi-role ship, often envisaged with modular bolt on capabilities, has been the stable of conferences for most of this decade. Similarly, adaptability is an increasingly common theme in presenting new designs and concepts. However, the question for the naval architect is “do these represent the right solution for a given individual project” or has the concept been overstated as a vision of the future and used as the template which is not quite the panacea that it promises.\u0000After several decades involved in a wide range of projects, the authors offer their thoughts on the opportunities and realism of multi-role ships and adaptability. The paper explores some of the lessons learnt in delivering multi-role and modular designs. The underlying themes that are fuelling the interest in multi-role ships along with the typical roles considered are also discussed.","PeriodicalId":404297,"journal":{"name":"Warship 2019: Multi-Role Vessels","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131114884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}