Michael Triantafyllou, Marc Bodson, Michael Athans. / "July, 1982." / Bibliography: p. 118-120. / National Aeronautics and Space Administration and Langely Research Grant NGL-22-009-124

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.

Thesis (M.S.)--Massachusetts Institute of Technology, 2002. / Includes bibliographical references (p. 51.52). Also available online.

Thesis (M.S.)--Naval Postgraduate School, 2002. / Cover title. "June 2002." AD-A405 685. Includes bibliographical references. Also available via the World Wide Web.

Proefschrift--Utrecht. / "Stellingen": [2] p. inserted. Bibliography: p. 91.

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

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, September 2003. / Includes bibliographical references (leaves 97-101). / 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. / by Jeffrey Allen Gregor. / S.M.

Naval history,like military history, has until recently concerned itself largely with battles, or at least with wars. The implicit assumption was presumably that the key to history was to be found in these turning-points, rather than in the piping times of peace. A fighting service was only really of interest when fighting. In recent years this approach has been largely abandoned, and it is now recognized that warfare is an extension, not only of politics, but of most other activities of man; that it is in itself one of his most characteristic activities, and may be studied to reveal most of his characteristics. The present study falls into this pattern. In that it traces the progress of warship design, it may be taken as a traditional technical study. In that it covers the formation of grand strategy and naval policy it may be thought of as an essay in the moulding of government decisions. As a survey of the administrative development of the Admiralty, it falls into another possible category. Finally, in charting the rise of professional studies and the intellectual growth of the Victorian naval officer it touches directly on social history. It is the writer's belief that a fighting service, especially one with so distinct and independent a character as the Navy, may be studied as a society in itself, or as a microcosm of society in general. It was with these considerations in mind that the years 1865 to 1890 were chosen. Paradoxically enough from the viewpoint of the old approach to naval history,they were years of general peace; it is contended that they were not the less interesting for that,but rather the more. One may almost say that the absence of major naval battles or campaigns allowed naval development to proceed along a steady course,undisturbed by adventitious factors. The influences at work upon the Navy and its policy are the more easily discerned without the distractions of actual operational experience. It is this which lends peculiar interest to the period; in no other age of British history were naval officers more remote from the experience of naval war. Of the thirty or so officers who sat at the Board of Admiralty "between 1866 and 1890,none had ever fought in a naval battle of any importance. They had "been present at numerous "bombardments,they had led landing parties and boat actions,stormed cities and stockades, fought in river,swamp and jungle, against pirates, savages, and slavers; but they had no experience of naval warfare on the high seas. This gives a unique quality to the age; to borrow a metaphor from medicine, it was sterile, uncontaminated with reality. [Continued in text ...]

Thesis. 1977. Ocean E.--Massachusetts Institute of Technology. Dept. of Ocean Engineering. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Includes bibliographical references. / by William Augustus Tyler Cassedy IV. / Ocean E.

The Australian Maritime Engineering Cooperative Research Centre, and its partner organisation initiated this research effort. In particular, BHP and the Defence Science and Technology Organisation held the principal interest, as this research effort was a part of the investigation into the utilisation of X-80 steel in naval platforms. After some initial considerations, this research effort focussed on the development of X-80 steel blast tolerant transverse bulkheads. Unfortunately, due to the Australian Maritime Engineering Cooperative Research Centre not being re-funded after June 2000 and other project factors, the planned blast tests were not conducted, hence this research effort focussed on the tools needed for the formation of optimised blast tolerant transverse bulkheads rather than on the development of a single structural arrangement. Design criteria were formed from the worst case operational requirements for a transverse bulkhead, which would experience a 150 kg equivalent blast load at 8 m from the source. Since the development of any optimised blast tolerant structure had to be carried out using finite element analysis, material constants for X-80 steel under high strain rates were obtained. These material constants were implemented in the finite element analysis and the appropriate solid element size was evolved. The behaviour and effects of stress waves and high strain rates were considered and the literature reviewed, in particular consideration was given to joint structures and weld areas effects on the entire structural response to a blast load. Furthermore, to support the design criteria, rupture prediction and determination methodologies have been investigated and recommendations developed about their relevance. Since the response of transverse bulkheads is significantly affected by their joint and stiffener arrangements, separate investigations of these structures were undertaken. The outcomes of these investigations led to improvements in the blast tolerance behaviour of joints and stiffeners, which also improved the overall response of the transverse bulkhead to air blast loads. Finally, an optimisation procedure was developed that met all the design criteria and its relevant requirements. This optimisation procedure was implemented with the available data, to show the potential to develop optimised X-80 steel blast tolerant transverse bulkheads. Due to the constraints mentioned above the optimisation procedure was restricted, but did show progression towards more effective blast tolerant transverse bulkhead designs. Factors, such as double skin bulkheads, maximising plate separation, and the use of higher yield steel all showed to be beneficial in the development of optimal X-80 steel blast tolerant transverse bulkheads, when compared to the ANZACclass D-36 steel transverse bulkheads.