Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 4 Computer Aided Engineering and Drafting in Shipbuilding written by and published by . This book was released on 1977 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presentation gives an overview of uses and advantages of computer aided design.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 21 Computer Aided Ship Design and Construction in the Navy written by and published by . This book was released on 1977 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 18 Group Technology as Related to the Shipbuilding Industry written by and published by . This book was released on 1977 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 25 Integrating Shipyard Design and Manufacturing Functions Into an Existing CAD CAM System written by and published by . This book was released on 1979 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the REAPS Technical Symposium. Paper No. 25: Integrating Shipyard Design and Manufacturing Functions into an Existing CAD/CAM System.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 25 Computer Graphics Hardware and Application in Shipbuilding written by and published by . This book was released on 1976 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The computer graphics technology is now developed far enough to be applicable in CAD systems for use in the shipbuilding industry. Computer graphics implies on-line access to the computer system, and will give the users a more direct contact with the computer assisted design process. Graphical presentation of the contents of the database will make the database more user-oriented.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 1 Alternatives for Effective CAD CAM Utilization written by and published by . This book was released on 1979 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the REAPS Technical Symposium. Paper No. 1: Alternatives for Effective CAD/CAM Utilization.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 14 SPADES as an Aid in Ship Design written by and published by . This book was released on 1977 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of computers has made a tremendous impact on the ship design and the ship building processes in recent years. Designers utilize special programs to optimize their design according to economic and performance requirements. for a certain type of vessel in a certain type of service. From this iterative process, the optimum parameters are obtained and the preliminary design carried out.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 3 A Low Cost Parts Definition System written by and published by . This book was released on 1977 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presentation discusses a Computer Aided Design (CAD) system in development incorporating off the shelf components.
Download or read book The National Shipbuilding Research Program Proceedings of the IREAPS Technical Symposium Paper No 17 Navy Computer Aided Ship Design The National Shipbuilding Research Program written by and published by . This book was released on 1982 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Navy program for applying CAD/CAM technology to ship design and construction has undergone a number of changes in the past fen years. To clarify these changes and their relationships, a summary of the history is required as shown in Figure 1. The Naval Sea Systems Command established a computer-aided ship design group in 1952, one year after delivery of the first commercial computer. All of their efforts focused on applying computers to the ship design phases performed by NAVSEA. Based on the success of these efforts, NAVSEA established a program called CASDAC (Computer Aided Ship Design and Construction) in 1966. The objectives of CASDAC were to prove the feasibility of computer application, to verify the benefits, and to foster the use of computers to all phases of ship design and construction. In 1980, this program was renamed the CAD/CAM Program. In 1981, the Navy split the program into two separate but coordinated programs. The "CAM" of "CAD/CAM" became part of a larger effort aimed at the private shipbuilding industry. That program is the shipbuilding Technology Program which in turn is a major segment of the Navy's Manufacturing Technology Program. The "CAD" of CAD/CAM is now called the Computer Supported Design or CSD Program. The remainder of this paper will apply only to the CSD Program.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 9 SPADE Interactive Graphics at Avondale written by and published by . This book was released on 1976 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the decision was made to proceed with the development of the Interactive Graphics version of the SPADES System, a list of requirements and goals was made. One of the major considerations was to have total interchangeability between the graphic and the batch mode of the System such that rework could be processed easily, whether the original work had been done through the 'CRT' or in batch. As much as we would like to think otherwise, experience has taught us that changes and revisions are an ever present way of life during the ship design and construction process. The requirement was also set that none of the SPADES management and control features would be compromised because of the graphic. In order for the graphic version to be a useful production tool, the user would have the capability of totally checking parts and/or burning tapes generated through the CRT without having to wait for a drafting machine drawing and/or computer printout. It was also decided that the user would have the capability of switching from one program to another directly from the tube without re-initializing any program at the central computer. The plans called for four CRTs to be on simultaneously, and for at least one batch SPADES program to be also running at the same time. This requirement caused the only major modification of the then existing SPADES System in order to allow different programs to read and write records from the same data base at the same time. By combining the use of virtual memory capability of the computer and judicious use of overlay, all the applicable programs have been linked together in one executable module.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 12 On Line Data Entry at Port Weller The National Shipbuilding Research Program written by and published by . This book was released on 1977 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: In March of 1976, the decision was made at Port Weller Dry Docks to purchase an in-house computer system to expand our use of computer programs and to update our present systems. At that time two systems were in operation at Port Weller. The accounting and labor distribution programs were executed on a Litton-McBee paper tape oriented computer system, and the production planning and control, numerical control, and design programs were executed on a UNIVAC 1108 time sharing system using a remote batch terminal for data transmission.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 2 N C Justification in the Shipyard written by and published by . This book was released on 1977 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper discussed the questions raised and the justification raised for a large capital expenditure to convert to computer aided lofting and Numerical Control (N/C) burning.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 17 NASSCO Organization for the SPADES System written by and published by . This book was released on 1976 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the National Steel and Shipbuilding Company (NASSCO) set out to use SPADES, an internal company organization for its use emerged, resulting in an effective working relationship among the various departments of the company. These departments are Engineering, Production, and Computer Services. The NASSCO organization for SPADES evolved along regular functional lines within the departments affected. Loftsmen, who used to make full size wooden templates on the mold loft floor, are now the Numerical Control (N/C) programmers who cause the N/C tapes to be made. Engineers, who issue preliminary unfaired ships lines, are now able to complete the job, since the fairing operation does not require a drafting board the size of the mold loft floor. Computer service personnel, who run the company computer, have added SPADES to the services they provide. And finally, the responsibility for control of the SPADES system is assigned to the Computer Support Group in the Engineering Department, which has charge of all scientific and engineering programs used by the Engineering Department. The user functions are divided between engineering and production. There are eight SPADES modules, three of which are used by the Engineering Department, three used by the Mold Loft, and two used jointly or by either as needed. The three engineering modules are: the Fairing and Drawing module; the Hulload module; and the Hullcal module, which is a package of naval architecture routines. The three modules used by the Mold Loft are: Part Generation module, which produces information and a tape for drawing the part; Nesting module, which produces a tape of nested parts for the burning machine; and Plate Development module, which produces tapes for burning shell plates. The Manufacturing Aids module is used jointly by Production and Engineering. Another joint-use module is the Utility module. This is a group of five programs used for direct access to the data base.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 7 Shipyard Planning and the Computer Fact Or Fantasy written by and published by . This book was released on 1980 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The planning environment in American shipyards has undergone a change[of technique and attitude with the upswing in use of computers. Traditional planning mechanisms have given way to PERT networks and sophisticated data collection and reporting computer systems. This transition has not been as successful as was intended as evidenced by the planning and scheduling problems faced by many of these computerized yards. Data processing was moved from the basic accounting arena into operations research and massive production-oriented systems which has diluted the planning effort. This is caused by planners which have not evolved from production, a planning attitude that the computer can solve all problems. and management's inability to recognize the shortcomings of computer software. Technology is available to assist the shipyard with total planning and complete ship's plans and schedules. However planning. in itself, must be adapted to use this computer technology and not be driven by it.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 19 The SFI Coding and Classification System for Ship Information written by and published by . This book was released on 1977 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 1 Practical Shipbuilding Research and Development written by and published by . This book was released on 1976 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The National Shipbuilding Research Program Proceedings of the REAPS Technical Symposium Paper No 22 Recent Developments in Computer Based Systems at Kockums written by and published by . This book was released on 1977 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the REAPS Technical Symposium concerning the computer systems at Kockums.
