A Library Based Approach for Exploring Style in Preliminary Ship Design

The unique decision making environment that occurs in ship concept design prevents a full exploration of possible solution styles. However, alternative styles present distinct advantages in certain situations. This is particularly true for different hullform styles which can give significant performance benefits. To fully capitalise upon these alternatives, a comprehensive exploration should occur at the outset of the design process. Current ship design methods have been found to limit the designer’s ability to rapidly explore a large number of radically differing alternatives. This is a consequence of a common requirement for the early selection of design styles. Clearly, some approach able to support the designer in exploring alternative styles early in the design process would offer the designer significant advantages. This thesis begins with the identification of a gap in the design methods currently avail- able to the designer selecting hullform style early in the ship design process. It details a design approach aimed at closing this gap while targeting the early design stages of naval ships. A review of wider engineering design research has highlighted several promising models of design theory, knowledge and technology that could be usefully applied to this problem. Using these models a new Library Based approach has been proposed and developed. This Library Based approach employs decomposition and pre-calculation to create a library of sub-options that can be rapidly examined using a set of initial design requirements to develop a range of possible options. Comparison with a notional optimisation process suggests the proposed approach offers advantages for problems similar in characteristic to the selection of hullform style. The approach is then demonstrated through two example implementations which are applied to the initial design of several naval combatants including an existing design. The discussion on the proposed approach highlights its strengths and weaknesses compared to two lists of needs for ship concept design tools and also its potential to be employed in concert with other design methods, aiding the necessary decision-making that occurs early in the ship design process. The key conclusion of the research is that the gap in the selection of hullform style can be met through the application of the proposed Library Based approach. Finally, five areas of future research are recommended: exploring extensions of the approach presented able to extrapolate the contents of the library; extend the approach to provide insight into relationships and drivers; investigating alternative technologies for the library; applying parametric design tools to generate library data; and demonstrating links to other design methods

Assessing the suitability of ship design for human factors issues associated with evacuation and normal operations

Evaluating ship layout for human factors (HF) issues using simulation software such as maritimeEXODUS can be a long and complex process. The analysis requires the identification of relevant evaluation scenarios; encompassing evacuation and normal operations; the development of appropriate measures which can be used to gauge the performance of crew and vessel and finally; the interpretation of considerable simulation data. In this paper we present a systematic and transparent methodology for assessing the HF performance of ship design which is both discriminating and diagnostic. The methodology is demonstrated using two variants of a hypothetical naval ship

Reforging the Sword

This report proposes an alternative U.S. military force for the first quarter of the 21st century -- one designed to execute a new international security strategy that attempts to respond to the challenges of a changing world and also shape what that world will look like in 2025

Summary of Research 1994

The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government.This report contains 359 summaries of research projects which were carried out under funding of the Naval Postgraduate School Research Program. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports. The research was conducted in the areas of Aeronautics and Astronautics, Computer Science, Electrical and Computer Engineering, Mathematics, Mechanical Engineering, Meteorology, National Security Affairs, Oceanography, Operations Research, Physics, and Systems Management. This also includes research by the Command, Control and Communications (C3) Academic Group, Electronic Warfare Academic Group, Space Systems Academic Group, and the Undersea Warfare Academic Group

SPATIAL TRANSFORMATION PATTERN DUE TO COMMERCIAL ACTIVITY IN KAMPONG HOUSE

ABSTRACT Kampung houses are houses in kampung area of the city. Kampung House oftenly transformed into others use as urban dynamics. One of the transfomation is related to the commercial activities addition by the house owner. It make house with full private space become into mixused house with more public spaces or completely changed into full public commercial building. This study investigate the spatial transformation pattern of the kampung houses due to their commercial activities addition. Site observations, interviews and questionnaires were performed to study the spatial transformation. This study found that in kampung houses, the spatial transformation pattern was depend on type of commercial activities and owner perceptions, and there are several steps of the spatial transformation related the commercial activity addition. Keywords: spatial transformation pattern; commercial activity; owner perception, kampung house; adaptabilit

Aeronautical engineering: A continuing bibliography with indexes (supplement 247)

This bibliography lists 437 reports, articles, and other documents introduced into the NASA scientific and technical information system in December, 1989. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics

Seabasing and joint expeditionary logistics

Student Integrated ProjectIncludes supplementary material. Executive Summary and Presentation.Recent conflicts such as Operation Desert Shield/Storm and Operation Iraqi Freedom highlight the logistics difficulties the United States faces by relying on foreign access and infrastructure and large supply stockpiles ashore to support expeditionary operations. The Navy's transformational vision for the future, Sea Power 21, involves Seabasing as a way to address these difficulties by projecting and sustaining joint forces globally from the sea. This study analyzes logistics flow to, within and from a Sea Base to an objective, and the architectures and systems needed to rapidly deploy and sustain a brigade-size force. Utilizing the Joint Capabilities Integration and Development System (JCIDS), this study incorporates a systems engineering framework to examine current systems, programs of record and proposed systems out to the year 2025. Several capability gaps that hamper a brigade-size force from seizing the initiative anywhere in the world within a 10-day period point to a need for dedicated lift assets, such as high-speed surface ships or lighter-than-air ships, to facilitate the rapid formation of the Sea Base. Additionally, the study identifies the need for large-payload/high-speed or load-once/direct-to- objective connector capabilities to minimize the number of at-sea transfers required to employ such a force from the Sea Base in 10 hrs. With these gaps addressed, the Joint Expeditionary Brigade is supportable from the Sea Base.http://archive.org/details/seabasingndjoint109456918N