Dissertations / Theses: 'Warsips'

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Sievenpiper, Bartholomew J. "Electrical ship demand modeling for future generation warships." Thesis, Cambridge, Massachussetts, Massachussetts Institute of Technology, 2013. http://hdl.handle.net/10945/40262.

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CIVINS
The design of future warships will require increased reliance on accurate prediction of electrical demand as the shipboard consumption continues to rise. Current U.S. Navy policy, codified in design standards, dictates methods of calculating the average demand power. Using several modern sources of information for the DDG-51 class ship, this thesis investigates the utility of current analysis techniques and examines possible improvements. This thesis expands upon a basic method of modeling and simulation to develop a design tool that would provide an improved method of predicting ship electrical loads with increased fidelity of the ship's electrical demand. These efforts ultimately allow a better understanding of ship behavior to enable decision making in all stages of Naval ship design.

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Sievenpiper, Bartholomew J. (Bartholomew Jay). "Electrical ship demand modeling for future generation warships." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81589.

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Thesis (Nav. E. and S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 98-99).
The design of future warships will require increased reliance on accurate prediction of electrical demand as the shipboard consumption continues to rise. Current US Navy policy, codified in design standards, dictates methods of calculating the average demand power. Using several modern sources of information for the DDG-51 class ship, this thesis investigates the utility of current analysis techniques and examines possible improvements. This thesis expands upon a basic method of modeling and simulation to develop a design tool that would provide an improved method of predicting ship electrical loads with increased fidelity of the ship's electrical demand. These efforts ultimately allow a better understanding of ship behavior to enable decision making in all stages of Navy ship design.
by Bartholomew J. Sievenpiper.
Nav.E.and S.M.

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English, Andrew Ramsey. "The Laird rams : warships in transition, 1862-1885." Thesis, University of Exeter, 2016. http://hdl.handle.net/10871/24286.

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The Laird rams, built from 1862-1865, reflected concepts of naval power in transition from the broadside of multiple guns, to the rotating turret with only a few very heavy pieces of ordnance. These two ironclads were experiments built around the two new offensive concepts for armoured warships at that time: the ram and the turret. These sister armourclads were a collection of innovative designs and compromises packed into smaller spaces. A result of the design leap forward was they suffered from too much, too soon, in too limited a hull area. The turret ships were designed and built rapidly for a Confederate Navy desperate for effective warships. As a result of this urgency, the pair of twin turreted armoured rams began as experimental warships and continued in that mode for the next thirty five years. They were armoured ships built in secrecy, then floated on the Mersey under the gaze of international scrutiny and suddenly purchased by Britain to avoid a war with the United States. Once purchased, they were largely forgotten. Historians rarely mention these two sister ironclads and if mentioned at all, they are given short shrift. Built with funds obtained in part through the Confederate Erlanger loan, these ironclads were constructed at Lairds shipyard in Birkenhead and represented an advanced concept of ironclad construction through new proposals involving turrets, the ram, heavy guns and tripod masts on an armoured ship, as advocated by Captain Cowper Coles, R.N. They proved too much of a leap in one design but when their roles caught up to the revised designs, the ships were modified to meet new requirements. After several mission and design changes they then performed to standard. This belated success occurred when the concept of the ideal armoured warship was in flux throughout the middle Victorian years.

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Tchelistcheff, Andre Victor. "Warship : memorial in antithesis." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/70212.

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Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 1992.
Includes bibliographical references (p. 72).
This thesis is divided into three distinct yet related parts. The first consists of observations and reflections on some of New York City's many war memorials, ranging from one commemorating the Revolutionary War to one dedicated this past year for the Korean War. What becomes evident within the wide range of memorials, is the degree to which they can be used to gauge the political sentiment and aspirations of previous epochs. In the second section I examine the aircraft carrier USS Intrepid Sea-Air-Space Museum of Patriotism, as a case study of how a contemporary memorial functions within and propagates a particular ideological agenda. This "living" memorial/museum works as a reminder of past threats to nationhood, and of the necessity to retain the state military apparatus to prevent future aggressions. The third section is a design for a war memorial to be located on the Hudson River coast in New York City. The project explores the possibilities for a future memorial, a memorial of resistance. It is intended to create an experience in antithesis to the sentiments of valor, patriotism and militarism glorified in the case study.
by Andre Victor Tchelistcheff.
M.Arch.

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Ellis, David W. "Engineering analysis into the replacement of the centralized high pressure air system for DDG 51 class flight IIA." Master's thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-03172010-020205/.

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Hascall, Andrew M. Matthews Andrew M. Gyarmati Mihaly Gantt William K. Hajdu Zsolt. "Analysis of the ship ops model's accuracy in predicting U.S. Naval ship operating cost /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FGantt.pdf.

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Thesis (M.B.A.)--Naval Postgraduate School, June 2003.
"MBA professional report."--Cover. Joint authors: Andrew M. Matthews, Mihaly Gyarmati, William K. Gantt, and Zsolt Hajdu. Thesis advisor(s): Shu Liao, John Mutty. Includes bibliographical references (p. 283). Also available online.

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Weekes, Godfrey D. "Cost benefit analysis of adjustable speed drives aboard Arleigh Burke class destroyers." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://hdl.handle.net/10945/6253.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, September 2003.
Thesis advisor(s): Robert W. Ashton, John Ciezki, Andrew A. Parker. Includes bibliographical references (p. 69-71). Also available online.

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Carrasco, Juan L. "A manpower comparison of three U. S. Navies the current fleet, a projected 313 ship fleet, and a more distributed bimodal alternative /." Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Sep/09Sep_Carrasco.pdf.

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Thesis (M.S. in Operations Research)--Naval Postgraduate School, September 2009.
Thesis Advisor(s): Hughes, Wayne ; Hatch, William. "September 2009." Description based on title screen as viewed on November 03, 2009. Author(s) subject terms: Manpower, crew size, manning, 313 ship Navy, new Navy fighting machine, NNFM, requirements. Includes bibliographical references (p. 79-82). Also available in print.

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Choi, Hanwool. "Naval ship concept design for the Republic of Korea Navy a systems engineering approach." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Sep/09Sep_Choi_Hanwool.pdf.

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Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, September 2009.
Thesis Advisor(s): Whitcomb, Clifford ; Papoulias, Fotis. "September 2009." Description based on title screen as viewed on November 4, 2009. Author(s) subject terms: Naval combatant ship, concept design process, systems engineering approach, system architecture, ship synthesis, OMOE, optimization, FFX case study. Includes bibliographical references (p. 61-62). Also available in print.

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Christein, John Paul. "A design methodology for welded structures to be used on U.S. Navy surface combatant ships." Master's thesis, This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-02022010-020042/.

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Erno, Vincent V. Snyder Mike. "Analysis of the Arliegh Burke Destroyer Class Damage Control shipboard phased-replacement process." Monterey, Calif. : Naval Postgraduate School, 2009. http://handle.dtic.mil/100.2/ADA501380.

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"Submitted in partial fulfillment of the requirements for the degree of Master of Business Administration from the Naval Postgraduate School, June 2009."
Advisor(s): Euske, K. J. ; Wagner, Brett. "June 2009." "MBA professional report"--Cover. Description based on title screen as viewed on July 14, 2009. DTIC Identifiers: Arliegh Burke Class Destroyer, process improvement, shipboard analysis. Author(s) subject terms: Phased Replacement, Arliegh Burke Class Destroyer, Damage Control, Process Improvement, DDGRON, CNSF, COMNAVSURFOR, AFMP Includes bibliographical references (p. 59). Also available in print.

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Willett, Devon K. "Ship and installation program optimal stationing of Naval ships." Thesis, Monterey California. Naval Postgraduate School, 2006. http://hdl.handle.net/10945/2768.

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.2 billion in savings. We also investigate the influence of using two different measures of pier capacity and incorporate 30 new ships and submarines to demonstrate SHIP's ability to station the proposed future force structure.
US Navy (USN) author.

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Tamez, Dorothy J. "Using commercial-off-the-shelf speech recognition software for conning U.S. warships." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FTamez.pdf.

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Thesis (M.S. in Information Technology Management)--Naval Postgraduate School, June 2003.
Thesis advisor(s): Monique P. Fargues, Russell Gottfried. Includes bibliographical references (p. 71-74). Also available online.

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Bradbeer, N. I. C. "Implications for underwater shock response of adopting simplified structural styles in warships." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1400298/.

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Over the last two decades there has been increasing interest among naval ship designers to adopt design style elements, standards and practices from commercial shipbuilding. Notable among this is a transition from the highly complex structural styles prevalent during the Cold War to simpler, more readily produced structure. It is generally presumed that this will reduce ship procurement costs, but may also have an effect on operational characteristics, including vulnerability to hostile action. Many naval weapon systems employ shock from underwater explosions as their damaging mechanism. In severe cases shock can cause catastrophic loss of watertight integrity, but in even moderate cases of shock the resulting acceleration environment inside the ship can damage or destroy vital equipment. The research presented in this thesis attempted to quantify the effect of adopting simpler structural styles upon this damaging acceleration environment. A number of different frigate structural models were specifically designed, using different structural styles but to meet the same design strength criteria. These models were subjected to simulated underwater explosions using Fluid Structure Interaction Finite Element Analysis techniques and the resulting motions at likely equipment mounting points computed. Results are presented in the form of comparative shock response spectra and also compared against existing shock response prediction techniques. This thesis concludes that the adoption of certain simplified structural styles in warships can lead to significantly elevated shock response motions, compared to those expected from a ship with a more typical naval structural style. In particular, the adoption of reducing the number of stiffeners, or adopting lower cost stiffener profiles, may result in motions increased by a degree significant enough that they should be taken into account when specifying the shock tolerance or mounting arrangements for on-board equipment.

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Hanthorn, David Gordon. "Vulnerability analysis of an all-electric warship." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/10945/4942.

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CIVINS
Approved for public release; distribution is unlimited
Traditional design processes usually rely on cost as the metric the designer uses to select among different alternatives. Sometimes when costs cannot be calculated we use weight, volume and efficiency as surrogates for cost. However minimizing costs does not necessarily give us the best design for a particular mission; this is particularly true for military ships. Proposals to include such considerations as quality of service and survivability as metrics to be used in a multi objective design process or as constraints have appeared in the literature. A tool that analyzes survivability of distributed systems at early stage design does not exist. In this thesis we develop a metric for survivability suitable for early stage design of destroyers.

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Stratmann, Johannes Philipp. "Engineering management of early stage warship design." Thesis, University of Southampton, 2006. https://eprints.soton.ac.uk/142859/.

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Warship Feasibility Studies are highly complex projects. The thesis attempts to highlight the relevant factors inherent within industry and academia and then derives a methodology for managing early stage warship design. The initial data were gathered at the VT shipyard by interviewing key personnel. The collected data are then analysed using the MS Visio flowchart package to create input/output diagrams for all existing areas of work. Identifying explicit and implicit links allows the existing areas of work to be linked and inherent areas to be identified. The resulting connection diagrams are then analysed and compared with existing literature. The analysis results in the creation of several loops depicting the data flow during the assessment phase. Two case studies are carried out to further refine the developed interface model. This model is further improved by carrying out in-depth investigations into previously neglected design factors. A series of algorithms are developed that can be used to determine balanced designs for corvettes and fast attack craft. These algorithms are used to identify factors and events that need extra attention during the design process. Different tools for managing the dataflow across the identified interfaces are researched and a set of control mechanisms is described in more detail. One mechanism, Margins, is further investigated using the developed algorithms in combination with knowledge obtained at VT to determine suitable margin ranges and applications. The results from the interface analysis and interface management studies are combined to derive a management methodology, consisting of a project schedule, a set of functional flowcharts and an accompanying guidance manual. This methodology is tested and validated on a design study. The results from the validation are used to determine any required changes to the methodology. The developed methodology is found to provide an effective tool for managers and designers during the early stages of warship design in a defence environment.

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Baker, Patrick T. "A study of the Russian acquisition of the French Mistral amphibious assault warships." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5645.

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In 2009, Moscow opened negotiations with Paris to purchase the Mistral class amphibious assault ship. In December 2010, Russia indicated that it was prepared to move forward with an agreement to buy two Mistral class warships, with the option of building two more jointly at a Russian shipyard. Neither Russia, nor the Soviet Union ever possessed a vessel with the capabilities of the Mistral class. An amphibious assault ship would be a new addition to the Soviet/Russian naval arsenal. The fact that Russia must turn to foreign suppliers to modernize its fleet capabilities indicates that Russia's domestic arms industry lacks the capability to produce a range of modern warships. The Mistral is the first significant arms sale of a major NATO power (France) to a country that some still see as a threat. For this reason, the sale has raised fears among the smaller NATO members, who charge that Paris has brushed aside their security concerns for national and economic reasons. This thesis argues that the Mistral sale is driven by Russia's need to acquire modern command and control and shipbuilding technologies, rather than increase its amphibious assault capabilities per se.

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Perez, Villalonga Francisco J. "Dynamic escape routes for Naval ships." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FPerez%5FVillalonga.pdf.

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Prince, Martyn Paul. "Stabilising ships for helicopter operations." Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342777.

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Glete, Jan. "Navies and nations : Warships, navies and state building in Europe and America, 1500 - 1860." Stockholms universitet, Historiska institutionen, 1993. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-42080.

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Killila, John M. "Selection of Naval Academy graduates for nuclear training." Thesis, access online version, DTIC, 2006. http://handle.dtic.mil/100.2/ADA470125.

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Freymiller, Aaron Troy. "LED shipboard lighting a comparative analysis." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FFreymiller.pdf.

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Thesis (Master of Business Administration)--Naval Postgraduate School, December 2009.
Thesis Advisor(s): Dew, Nicholas. Second Reader: Hudgens, Bryan. "December 2009." Description based on title screen as viewed on January 28, 2010. Author(s) subject terms: Lighting, LEDs, shipboard lighting. Includes bibliographical references (p. 31-32). Also available in print.

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MacIntyre, Mark Duncan. "Unfulfilled promise, the failure of Canada's hydrofoil warship project." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ47284.pdf.

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Humphries, Andrew David. "The development and application of warship cost estimating methods." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261973.

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Efimba, Motale E. "An exploratory analysis of littoral combat ships' ability to protect expeditionary strike groups." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03sep%5FEfimba.pdf.

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Trappe, Ralf. "Concept exploration for a future frigate/destroyer size warship platform." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA389336.

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Thesis (M.S. in Management) Naval Postgraduate School, March 2001.
Thesis advisor(s): Byers, David W. ; Barnard, James M. "March 2001." Includes bibliographical references (p. 105-106). Also available in print.

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Gomez, Torres Jose M. "Warship combat system selection methodology based on discrete event simulation." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5158.

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This thesis presents the development of a methodology for the conceptual design of a medium tonnage warship?s combat system for the Colombian Navy. The methodology is oriented toward the optimization of the operational effectiveness within the naval ship design constraints of weight, electrical power, volume, cost, and risk. The methodology is based on a Design Reference Mission (DRM), which is composed of four Operational Situations (OPSITs) covering antisubmarine warfare, anti-air warfare, mine warfare, and surface warfare. The OPSITs are represented by coupled physics-based models and probabilistic models. A discrete event simulation tool, ExtendSimÂ®, is used to implement these models, yielding quantitative results for mission success. Design of Experiments (DOE) is used to explore the design space, allowing identification of the main effects in each OPSIT model and the impact of each variable in the respective Measure of Effectiveness (MOE). The four OPSIT MOEs are integrated in a single Overall Measure of Effectiveness (OMOE) allowing the comparison among different configurations of combat systems, which is used to determine the best overall ship design to meet operational requirements.

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Peebles, Hugh B. "Warship building on the Clyde, 1889-1939 : a financial study." Thesis, University of Stirling, 1986. http://hdl.handle.net/1893/1789.

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The part played by warshipbuilding in sustaining the Clyde shipbuilding industry between 1889 and 1939 has received less attention than it deserves. Only a minority of firms undertook warshipbuilding in peacetime but they included some of the leading shipyards an the Clyde. This study, based on a detailed examination of accounts and cost records, shows that naval work was of critical importance for these firms from the 1890's onwards. All of the firms which took advantage of the expansion in the demand for warships in the 1890's were in financial difficulties and profitable naval contracts were largely responsible for reviving their fortunes. From then until the outbreak of the First World War in 1914, naval work constituted a major part of their output and the most profitable part of it. By 19149 all of the warshipbuilders had expanded their capacity and provided expensive new facilities largely an the strength of the demand for warships and the three biggest yards were owned by armaments manufacturers who were primarily interested in shipyards for their warshipbuilding capability. After the war, the demand for armaments contracted and the warshipbuilders were faced with the problem of finding profitable employment for capacity designed for building warships and warship engines. This proved to be impossible and the relative dearth of naval contracts in the 1920's and early 1930's was the primary cause of the severe financial difficulties in which they found themselves when the onset of the world financial crisis in 1931 brought merchant shipbuilding to a standstill. Only Beardmore's succumbed but, had rearmament not been in the offing, it is doubtful if many of the warshipbuilding yards would have survived the ensuing crisis. As it was the survivors regained their financial stability by 1939 only because of the revival in the demand for warships.

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Suh, Robert J. "Wireless content repurposing architecture for DC command and control." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03sep%5FSuh.pdf.

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Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, September 2003.
Thesis advisor(s): Gurminder Singh, Perry McDowell. Includes bibliographical references (p. 55-56). Also available online.

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Willers, Larry Francis. "On-the-job training and its effect on learning for first-term enlisted sailors aboard United States Navy ships." [Pensacola, Fla.] : University of West Florida, 2008. http://purl.fcla.edu/fcla/etd/WFE0000129.

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Forcier, Jean Yves. "On an even keel, warship command competency beyond the technical skills." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0022/MQ62014.pdf.

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Bayliss, Jonathan Andrew. "A methodology for topside design and integration in preliminary warship design." Thesis, University College London (University of London), 2003. http://discovery.ucl.ac.uk/1383536/.

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This thesis investigates warship topside design and integration and proposes a methodology that provides, during the preliminary design stages, an enhanced topside design capability above that currently available. The feasibility of such a system is demonstrated through a number of individual investigations and ship design studies for both conventional and unconventional naval vessels. A recommended implementation of the methodology, integrating it with the recently produced layout system, is proposed as the way forward. Topside design is a complex task resulting from the requirement to locate all the necessary equipment on the weatherdeck and superstructure of a warship whilst minimising interactions. The current tools and design methodologies fail to cohesively address design issues at the concept stage. This is often due to the specialist nature of the analyses, which require detailed definitions only available later in the design process as well as expert knowledge in the application of the techniques. The proposed methodology provides guidance as different design solutions are developed and evaluated, allowing earlier identification of potential problems. It operates in an 'open' manner providing the naval architect with the flexibility to investigate and analyse the design as it evolves without dictating design decisions or requiring expert application knowledge. The major issues that need to be considered during preliminary warship design are discussed. Current design methods and the shortfalls associated with each of them are considered. A methodology is outlined detailing the principles that are applicable and the important components and characteristics of any solution identified. The major aspects in topside integration are investigated and design tools proposed and evaluated. A framework for the integration of these tools is developed which is suitable for implementation using current computer technology. The suitability of this framework to incorporate other less complex but important topside design issues is evaluated and appropriate techniques identified.

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Kulceski, Samuel F. "Development of Generalized Trimaran Hullform Design Methodology for a Naval Warship." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1819.

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The purpose of this thesis is to advance research in the development of trimaran hullforms and analyze the feasibility of the hullform for a possible naval surface combatant using current hullform design tools. The “Generalized” Trimaran Methodology is a new process that focuses on the manipulation of the three hulled system’s total sectional area curve. The methodology is intended for rapid hull form development during the conceptual design phase, and can analyze an infinite number of trimaran hullforms. The thesis first proposes a new methodology for the design of trimaran hullforms, describes how the process was applied to an existing hullform, presents results of the analysis, and provides validation data from a tow tank resistance experiment.

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Waller, Brian S. "Development of a Quantitative Methodology to Forecast Naval Warship Propulsion Architectures." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2000.

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This paper is an investigation into a quantitative selection process of either a mechanical or electrical system architecture for the transmission of propulsion power in naval combatant vessels. A database of historical naval ship characteristics was statistically analyzed to determine if there were any predominant ship parameters that could be used to predict whether a ship should be designed with a mechanical power transmission system or an electric one. A Principal Component Analysis was performed to determine the minimum number of dimensions required to define the relationship between the propulsion transmission architecture and the independent variables. Combining the results of the statistical analysis and the PCA, neural networks were trained and tested to separately predict the transmission architecture or the installed electrical generation capacity of a given class of naval combatant.

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Woertz, Jeffrey C. "Quasi-static tearing tests of metal plating /." Springfield, Va. : Available from National Technical Information Service, 2002. http://handle.dtic.mil/100.2/ADA410822.

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Gregor, Jeffrey Allen. "Real options for naval ship design and acquisition : a method for valuing flexibility under uncertainty." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/10945/11049.

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The United States Navy is facing a need for a novel surface combatant capability. This new system of ships must be deigned to meet the uncertainty associated with constantly changing required mission capabilities, threats, and technological advances. Flexibility in design and management will enable these systems to maximize their performance under changing conditions. Real options involve the 'right but not the obligation' to take a course of action. Real options embody the flexibility that allows projects to be continually reshaped, as uncertainty becomes resolved. This thesis seeks to identify and analyze the real options available for the design and acquisition of naval ships. This thesis also seeks to determine the value of these options and determine the best types and amount of flexibility to design into naval systems in order to maximize the value of the system over time under uncertain conditions.

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Roberts, G. N. "Ship motion control using a multivariable approach." Thesis, Cardiff University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276880.

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Ellis, Brian T. "An investigation into the damaged stability of a tumblehome hull warship design." Monterey, California. Naval Postgraduate School, 1997. http://hdl.handle.net/10945/8570.

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The objective of this study is to investigate the hydrostatic and damaged stability of a tumblehome hull form by comparing the tumblehome form with one of similar displacement and geometric properties in a wallsided hull form. The data for the comparison is generated by modeling the hull forms in a computer modeling program designed by Creative Systems Incorporated titled General Hydrostatics. The objective was achieved by conducting research and computer modeling in 3 parts. (1) Model Development, (2) Intact stability analysis and (3) Damaged stability analysis. This thesis demonstrates both the intact stability and damaged stability problems that will be encountered if the tumblehome hull design is used on a modern warship, as well as the benefits from using an innovative and modern tumblehome hull design

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Basaran, Ismail Zafer. "Appropriateness and applicability of the use of performance incentives for warship procurement." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/27994.

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The end of the cold war caused defense budgets to decrease in sharp manner. This trend requires the Navy, as a branch of the DOD, to tighten its controls over spending and become more cost-effective. Since warship procurement is among the most important financial transactions of the Navy, one instrument that might improve the cost-effectiveness of the Navy is the use of cost and performance incentives in warship procurement. This thesis studies the traditional and current theories of incentive contracting. It explains the relationship between the cost-effectiveness, and how the use of incentives can encourage contractors to put in a high level of effort on projects so that the government will benefit more. To define the performance level of a warship, analytical approaches, such as the use of an operations research model with the aid of response surface methodology, and the subjective figures of merit model are discussed. This thesis also presents some views on the principal-agent problem, and it expands the idea fusing the contractor's unobservable effort level as means to determine what type of incentives to offer. To compare the traditional and new concepts of incentives, two specific examples are constructed and examined

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Andrews, Nicholas E., Gerardo Gamboa, Roscoe A. Smith, Matthew P. Artelt, Sarah E. Hentges, and Dereck D. Wright. "Integrated Electronic Warfare Systems aboard the United States Navy 21st Century Warship." Thesis, Monterey, California. Naval Postgraduate School, 2009. http://hdl.handle.net/10945/6947.

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The current world geopolitical situation has resulted in an ever increasing number of third-world nations and terrorists states gaining access to advanced military technology and weaponry that was previously limited to first-world nations. The blue water and littoral areas that are the operational environments of the United States and Coalition naval forces are within range of capable enemy missile systems as was evident in the attacks on the United States Ship Stark by Iraq in 1987 and the Israeli Naval Ship Hanit by Hezbollah in July 2006 Given the increasing threat of Anti-Ship Cruise Missiles (ASCM), the complete integration of an effective Electronic Warfare system into the combat systems of U.S. and Coalition maritime forces is paramount. Research has shown that this integration must include a computer-aided human element in the decision process. The project objective was to develop an improved, advanced Electronic Warfare architecture with a complete range of automated operation using a Human-In-the-Loop that could be integrated into existing and future combat systems. A model was developed that demonstrates solutions that integrate hard-kill defensive systems with soft-kill subsystems, managed by a human, in order to provide a completely integrated capability to defend against land, air, and sea-launched ASCMs.

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Granbom, Camilla. "Mounting of Inner Support Structure on the Swedish Warship Vasa : Product Development." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-79005.

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The master’s thesis is focused around the mounting of an inner support structure to the Swedish warship Vasa and was given by Camatec Industriteknik AB. The Swedish warship Vasa is one of the greatest national treasures of Sweden. The ship was built high and narrow, therefore a small gust of wind made her capsize during her maiden journey. Today it is the world’s bestpreserved ship from the 17th century and has been on display for the public at the Vasa museum since the year 1990. The purpose of the master’s thesis was to generate and evaluate concepts for the mounting of the inner support structure to the Swedish warship Vasa. The master’s thesis had the following goals: To generate and analyse possible concepts regarding the mounting. Final proposals of the mounting created in CAD. FEM calculations of the final proposals to ensure that they handle the load conditions properly. The master’s thesis followed the methodical process of product development with the steps: pilot study, concept generation, concept selection and concept evaluation. Three concepts were selected for further analysis. Two concepts involved a timber tong around the hanging knees. One fastened in a present structure of the ship (concept Y2.1) and the other one attached clamping force created by a spring in the construction (concept Y2.2). The third concept was a metal sheet between the main wales at the outside of the ship (concept G5). The concept Y2.1 was eliminated due to high local stress concentrations at the attachment in the ship. The concept Y2.2 showed some desirable features, including visual representation if tension was present. However, it was not ensured that the concept can keep the surface pressure below the maximum 0.15 MPa. Another uncertainty with the concept was the behaviour of the timber tongs if movement of the hull occurred. Therefore, the concept Y2.2 needs additional work before it can be continued or eliminated. The concept G5 handled the loading case without exceeding the required surface pressure. However, a decision whether the metal sheets would be to visible for visitors needs to be taken before continuing with or eliminate the concept. In summary, the concepts need further analysing before a final concept selection can be done.
Examensarbetet har fokuserat på infästningen av en inre stödstrukturen till regalskeppet Vasa och har utförts tillsammans med Camatec Industriteknik AB. Vasaskeppet är idag en av Sveriges största nationalskatter. Skeppet byggdes högt och smalt, således fick en mild bris henne att kantra under sin jungfruresa. Det är idag världens mest bevarade skepp från 1600- talet och har funnits på utställning sen 1990. Syftet med examensarbetet var att generera och utvärdera koncept för infästningen av den inre stödstrukturen till regalskeppet Vasa. Målen med examensarbetet var: Att generera och analysera möjliga koncept till infästningen. Modellera de valda koncepten i CAD. Utföra FEM- simuleringar på de valda koncepten för att säkerställa att lasterna fördelas rätt. Examensarbetet följer produktutvecklingsprocessen och har behandlat följande steg: förstudie, konceptgenerering, konceptval samt konceptutvärdering. Tre koncept valdes att tas vidare för djupare analys. Två koncept involverade en timmersax runt knäna på skeppet. Ett som fästes i skeppets befintliga struktur (koncept Y2.1) medans det andra fäste enbart med klämkraft som uppkom tack vare en fjäder i konstruktionen (koncept Y2.2). Det tredje konceptet var en plåt mellan berghultarna på utsidan av skeppet (koncept G5). Konceptet Y2.1 eliminerades på grund av de lokalt höga spänningskoncentrationer som uppkom. Konceptet Y2.2 visade upp önskvärda funktioner, såsom att visuellt påvisa drag. Dock är det inte säkerställt att konceptet genererar ett yttryck under det maximala trycket på 0.15 MPa. Ytterligare är timmersaxens beteende vid rörelse av skrovet osäkert. Således krävs fortsatt arbete med konceptet Y2.2 innan det kan tas vidare eller elimineras. Konceptet G5 hanterade lasterna utan att överskrida den maximala gränsen för yttrycket. Däremot måste ett beslut fattas, angående om plåtarna mellan berghultarna är för synlig eller inte, innan konceptet kan tas vidare eller elimineras. Sammanfattningsvis behöver vidare analys av koncepten ske innan ett slutligt konceptval kan fattas.

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Uhlig, Robert Angus. "Preliminary design and integration procedures for gas turbine intercoolers on naval combatants." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/80076.

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The methodology used in analyzing the feasibility of installing direct and indirect intercooling systems on naval gas turbines is presented. The indirect system is comprised of two types of heat exchangers; an air to ethylene glycol, plate fin heat exchanger, and an ethylene glycol to seawater shell and tube heat exchanger. The direct system utilizes an air to seawater shell and tube heat exchanger. The analysis requires, as input, air mass flow rates, compressor efficiencies and pressure ratios. The output, based on given environmental constraints and an assumed overall intercooler effectiveness, provides mass flow rates of seawater and ethylene glycol, heat exchanger effectiveness and size, intermediate fluid temperatures, and air and seawater outlet temperatures. The output provides preliminary data for specific heat exchanger design and pump and piping selections.
Master of Science

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Jenkins, Brent P. "United States warship transfers to Argentina, Brazil and Chile : options for U.S. policy." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26826.

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McConnachie, Glenn. "Air drying behaviour of waterlogged archaeological woods from the Tudor warship Mary Rose." Thesis, University of Portsmouth, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419045.

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Johansson, Filippa, and Lenita Karlsson. "Displacement Analysis of a Geodetic Network : A case study of the Vasa warship." Thesis, Högskolan Väst, Avdelningen för data-, elektro- och lantmäteriteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-11109.

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By measuring coordinates repeatedly in time we can detect movements of an area or an object by establishing and monitoring a geodetic network. Since it is known that the Vasa warship is suffering from decomposition, a geodetic network has been established around the ship to monitor its deformation. This is an important task for preserving and supporting the ship in its place. In this thesis, time series of coordinates are considered over 22 epochs of the ship measurements, a quadratic line is fitted to them and acceleration and velocity for each point on the ship’s hull are obtained. The x-axis is across the ship, the y-axis is along and the zaxis is the vertical one in the local coordinate system of the ship. A method is developed for monitoring displacement and its error at different parts on the ship in two successive epochs, considering the covariances between the point coordinates. The covariances influence the result of the displacement. Significant displacements, calculated with a variance-covariance matrix were compared with the displacements calculated without variance-covariance matrix. Considering the covariances gave 108 more insignificant three dimensional displacements, which means that they are in the order of random errors. The largest acceleration and velocity are found in the upper part of the ship stern in the Zcoordinates, where all points have significant acceleration and velocity. The ship bow has the second highest acceleration and velocity, while the midsection of the ship seems to be more stabile. In the X- and Y-coordinates the acceleration and velocity are smaller, in Ycoordinates almost all points have significant acceleration and velocity. In the Xcoordinates there are several points of data with insignificant acceleration and velocity, most of them located at the midsection of the vessel. The results show that the ship is moving and accelerating at various speeds on different sides of the ship, which indicates that there are parts that suffer from more crucial decomposing. The stern is the part of the vessel that has the highest velocity, acceleration and displacement. The ship is moving downwards with respect to the museum building at the same time as it tilting towards the port. The down pulling force can explain the movements downwards, the strength of the oak can also be one reason. The tilting could depend on the support structure since points in various part of the ship seems to have the same amount of movement in the direction towards the port.

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Dedic, Dina. "The warship Vasa : A Study of Lignin, Extractives and Acids in the oak wood." Licentiate thesis, KTH, Träkemi och massateknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121176.

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The oak wood timbers of the 17th century Swedish warship Vasa are weak. The weakening has been attributed to cellulose degradation, which is more extensive in the interior of the timbers compared to the surface regions. Further, the mechanism of cellulose degradation was attributed to oxidative reactions involving iron as a catalyst. In this work, the non-cellulosic wood components (lignin and extractives) in the wood of the Vasa have been studied in order to assess the level of degradation possibly caused by oxidative reactions. Because the interior of the wood timbers is more acidic and its cellulose more depolymerized than at the near surface regions, a general study of organic acidand iron concentrations with respect to different depths from the surface was also performed. Characterization of lignin in the wood of the Vasa was done by means of wet chemical degradation (thioacidolysis) and subsequent GC-MS analysis of the degradation products, as well as CP/MAS 13C NMR spectroscopy of the wood. Dry acetone- and water extracts of the wood were analyzed by 13C NMR spectroscopy and MALDI-TOF mass spectroscopy in order to study the presence of gallo- and ellagitannins. No severe lignin degradation and no discernible amounts of hydrolysable tannins in the oak wood of the Vasa were detected, indicating that oxidative reactions are not the primary route to cellulose depolymerization. High amounts of oxalic acid (analyzed by HPIEC) and a low pH have been found in the interior of the wood timbers, supporting acid hydrolysis as the main mechanism of cellulose depolymerization. Analysis of the iron distribution using ICP AES shows that iron is most abundant in the surface of the timbers and decreases as the concentration of oxalic acid increases. Experimental work also shows that some iron species (rust) in the Vasa neutralize oxalic acid, thereby protecting the surface wood from acid hydrolysis.

QC 20130422

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Ray, Eric Stewart David. "Fire in the Hold: Construction and Use of the 1628 Swedish Warship Vasa's Galley." [Greenville, N.C.] : East Carolina University, 2010. http://hdl.handle.net/10342/2807.

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Smithers, P. D. "The impact of major structural modifications on the radar cross section of a warship." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0007/MQ44859.pdf.

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Sakellariou, Dimitrios. "The effect of staying power on offensive and defensive power of a modern warship." Thesis, Monterey, California. Naval Postgraduate School, 1993. http://hdl.handle.net/10945/39892.

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Approved for public release; distribution is unlimited.
This thesis develops the relationship between the three major attributes of a modern warship: staying power, offensive power, and defensive power. Based on W. Hughes' Salvo Model, we show that there is an inverse linear relationship between a ship's staying power and its defensive power and a nonlinear relationship between its staying power and its offensive power. Using the embellishments that E. Hatzopoulos added regarding scouting effectiveness and alertness, we also compare the results for survivability with A. Lalis obtained from the Hatzopoulos model using scouting and alertness. We examine survivability using defensive power (or equivalently staying power, because of their linear relationship) and also offensive power.

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Warsitz, Michael [Verfasser], Sven [Akademischer Betreuer] Doye, and Jens [Akademischer Betreuer] Christoffers. "Steuerung der Regioselektivität der intermolekularen Hydroaminoalkylierung von Alkenen / Michael Warsitz ; Sven Doye, Jens Christoffers." Oldenburg : BIS der Universität Oldenburg, 2021. http://d-nb.info/1232405205/34.

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Dissertations / Theses on the topic 'Warsips'

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