The National Shipbuilding Research Program, Proceedings of the REAPS Technical Symposium Paper No. 1: Practical Shipbuilding Research and Development PDF Download

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Languages : en
Pages : 10

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The Ship Production Committee is made up of representatives from approximately twenty-four shipbuilders plus the American Bureau of Shipping, U.S. Coast Guard, U.S. Navy Research and Development and, of course, the Maritime Administration whose budget is the backbone of this vital project. We poll the industries to see who would use the results of a research project. The more yards that would use, the higher the priority; the higher the potential saving, the higher the priority. We then list the projects in priority sequence, see how far the budget reaches for the year, and submit those to the Maritime Administration for approval. When approved and a shipyard agrees to act as sponsor, a suggested contract is worked out between the sponsor shipyard and the Maritime Administration. The most valuable result of this program is that the shipyards are talking to each other at the working level for the betterment of our industry.

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Languages : en
Pages : 71

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The Research and Engineering for Automation and Productivity in Shipbuilding (REAPS) program aims at increasing U.S. shipyard productivity. The organization, activities and current and planned development projects of the program are reviewed. The 1980 symposium focuses on developing a consensus on a format for long range facility plans, with an emphasis on cost effectiveness and environmental impacts.

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Languages : en
Pages : 30

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The paper discusses a number of facets of Computer-Aided Ship Design and Construction (CASDAC) in which the writer has been involved. A brief history of computers in the Navy is given, some notes on the CASDAC project, the flavor of two recent programs, Navy planning and philosophy in detail design. and construction, some notes on the Computer-Aided Piping Design and Construction (CAPDAC) project, and finally some notes on the increasingly important role of computer science. The U.S. Navy has a long history in the use of computers in shipbuilding. In May 1944 the first computer came into operation at Harvard, the Automatic Sequence Controlled Calculator -- the Harvard Mark I. This was designed and constructed by Professor Howard Aiken -- at that time a Commander in the United States Navy. It was the Bureau of Ships which first sponsored the operation of this calculator and some of the first problems attacked originated from the Bureau. In 1952, the Applied Mathematics Laboratory was established at the now David W. Taylor Naval Ship Research and Development Center (DTNSRDC) to initiate computer service to the Navy. For this installation the Univac's 6th computer was installed in 1953. Early work included shaft vibrations, shell stiffening, propeller design, underwater sound intensities, pipe stress analysis, and nuclear reactor design. Within a year, this computer was operating around the clock. By 1958, clients included personnel from the naval shipyards processing programs associated with their ship construction program. By 1960 naval shipyards possessed their own computers and programs were in operation for tank capacity tables, hull deflection, voltage drop, shock mounts, sound isolation, mast calculations, weights and moments, propulsion shaft bearing reactions, pipe bend calculations and pipe stress analysis.

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Languages : en
Pages : 26

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The shipyards in this country have spent a sizable amount of money to modernize their methods of fabrication to increase construction. The shipbuilding industry is a labor intensive business based on small orders of ships that does not allow for total automation in the near term, if ever. One area of a shipyard that has minor or limited changes is the structural design office. The manual drafting of working drawings is basically the same as the methods used in the 1950's. A number of yards have restructured the working drawing to assembly type drawings. This is a major change assisting in the construction of the ship, but is still limited in scope. The present method does not allow for an orderly progression into the application of computers. The development of working drawings to assist construction is-poor and this stagnation has restricted the design office from converting drawings to computers. The problem stems from false economy values. The idea that a limited budget for the development of working drawings will increase the yard's profit margin is a false one. Every effort, or person hour, used in design should have a direct savings in production manhours. The goal of the designer's output should be a necessary and direct part of the construction program. Many design offices may not even realize that they are not only reducing costs, but are driving them up due to poor detailing. (A complete study of the working drawing process should be made objectively by design, production and planning people). This paper may give the basic outlines for consideration. Thomas P. Gallagher, Surface Ship Structures, Head, Research, Dynamic/Highedr Performance Craft Section, Phone 202-692-9107, Naval Ship Engineering Center.

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Languages : en
Pages : 30

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A growing amount of attention has been turned to Group Technology which deals with the area of batch-type manufacturing for those who are engaged with small lot sizes and a variety of products. Development and implementation of integrated computer aided manufacturing (ICAM) will lead to rapid changes in U.S. manufacturing industry. It has been recognized that Group Technology is an essential element of the foundation for the successful development and implementation of ICAM through the application of the part-family concept.

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Languages : en
Pages : 12

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Proceedings of the REAPS Technical Symposium. Paper No. 12: Network Scheduling of Shipyard Production, Engineering, and Material Procurement.

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Languages : en
Pages : 11

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The law that created the National Aeronautics and Space Administration directed NASA to provide "for the widest practicable and appropriate dissemination of information concerning its activities and results thereof." Assuming that the research and development costs supported NASA's primary space and aeronautics missions, then any secondary use of this technology for other non-aerospace purposes would provide an additional benefit to our national economy. The the exploration of space and the advancement of aeronautics generates innovations in almost every field of science and technology and, therefore, provides us with the broadest possible technical base to stimulate progress in areas not even remotely connected to the original research. NASA has established a national network of dissemination centers to serve industry by searching what has become the world's largest data bank of technical information. Technical information that has been provided through this network has resulted in many useful applications and new products. Spinoffs of technology have ranged from medical devices for the handicapped to patching materials for street maintenance and countless applications in between.

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Languages : en
Pages : 29

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An investigation of an approach to a U.S. Navy sponsored shipbuilding technology program is discussed. An approach is recommended, and a detailed project plan for a shipbuilding technology program is proposed. The U.S. Navy has announced its intention to initiate a major program for the enhancement of shipbuilding technology in the United States. The objectives of this program are to improve the quality, cost, and construction time for future U.S. Naval Ships, and to strengthen this country s shipbuilding industrial base. This motivation is heightened by the Administration plans to increase the Navy s fleet to 600 ships by 1988. This program is currently budgeted as a six-year, $80M effort, though its format has not been defined. Previously the Naval Sea Systems Command had contracted with SofTech, Inc. to assess Air Force initiatives in manufacturing technology with respect to Navy needs. Both the Navy and the Air Force have established programs to promote computer-aided manufacturing which have differed markedly in budget, in approach, and in industry involvement and acceptance. SofTech was directed to consider the applicability of the ICAM (Integrated Computer-Aided Manufacturing) Program approach to a Navy STP (Ship building Technology) Program. This paper recommends an approach to the planning, management, and integration portion of a national, participative Shipbuilding Technology Program (STP). These recommendations are SofTech s, and are not to be construed as government policy. They are based on SofTech s initial analysis, and on pertinent comments received from individuals in the Navy and the shipbuilding industry.

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Languages : en
Pages : 18

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In the mid 1960's the Computer Aided Ship Design and Construction project office, located in the Naval Ship Engineering Center, was chartered to apply computer aiding techniques to all phases of the naval shipbuilding process. After the aerospace industry's success in developing a productive wiring data system and an in-depth NAVSEC sponsored study at three designated naval shipyards of the cabling/wiring flow process during installation design, it was determined that a similar system should be developed for naval ship design and production. Because there are significant differences between wiring an aircraft and wiring a ship, a direct conversion from one application to the other was ruled out. In 1965 the Westinghouse Electric Corporation was selected to develop a system of computer programs for processing the flow of electrical and electronic cabling/wiring information used in ship construction. This system was to address the entire process of installation design of equipment on board any Navy ship. This included, such functions as cable routing, hanger selection, penetration design, planning and estimating supporting documents and the equivalent of all the necessary wiring plans. The C/W System is now being implemented at Norfolk and Long Beach and is scheduled for implementation in the other naval shipyards. This system is the first of what the author hopes will be a large number of computer aided ship design and construction programs to be developed and implemented by the Naval Sea Systems Command. It is expected that by applying these systems deliberately and diligently in an integrated shipyard modernization program, the total benefits of electronic data processing can be obtained, thus producing a better ship faster and at a lower cost.

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Languages : en
Pages : 13

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In the growth of a shipbuilding concern, a time arrives when manual efforts to control cost and report status become undesirable. However, when an attempt is made to apply readily available software, many obstacles are presented. One approach to avoid many of these obstacles is addressed. By describing vessel construction through a network of dated work orders, and the treating of this network as a structured bill of material, standard software packages can be used to manipulate the data necessary to provide material requirements planning and job cost accounting. Critical issues impacting the selection and successful implementation of computerized systems are also discussed.