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EXTENSION AND APPLICATION OF SHIP DESIGN OPTIMIZATION CODE (SHIPDOC)

NAVAL ENGINEERS JOURNAL 1984年第3期96卷 177-190页

作者： RICHARDSON, WM WHITE, WN William M:. Richardsonhas been employed as a naval architect in the Surface Effect Ship Division of the David Taylor Naval Ship Research and Development Center (DTNSRDC) where he has worked since 1975 in the areas of SES structural loads estimation and optimal ship design. Upon first coming to DTNSRDC he worked in the Ship Dynamics Simulation Branch on ACV submarine and hydrofoil simulations. While at Mare Island Naval Shipyard (MINS) he was a member of the Engineering Computer Applications Branch where he was responsible for the development of algorithms and programs for the solution of naval architectural problems including ship design flooding effects and submarine overhaul scheduling. Before coming to MINS he was employed as a naval architect in the Hull Scientific Branch of the Boston Naval Shipyard's Design Division. He obtained an B.S. degree in Naval Architecture and Marine Engineering from M.I.T. and is a member of SNAME. William N:. Whiteis a senior naval architect in the Advance Vehicles Branch of the Naval Sea Systems Command where he is responsible for the design of all surface effect ships and air cushion vehicles. Previous to his current assignment he was with PMS-304 the Navy's Surface Effect Ship Project Office. There he was the manager for machinery and system integration for the 3000 ton SES acquisition program. His earliest advanced ship experience was acquired while employed by the David Taylor Naval Ship Research and Development Center starting in 1970. Here he worked on the Navy's hydrofoil and air cushion vehicle programs. Mr. White started his career as a student trainee at the Boston Naval Shipyard in 1961 and transferred to Mare Island Naval Shipyard in 1964 where he worked on the Navy's Polaris program. He graduated from the University of Michigan with a Master's Degree in Naval Architecture and is a member of the SNAME and ASNE.

An existing nonlinear ship design optimization program designated SHIPDOC has been extended and a new surface effect ship (SES) description input file is being developed under the sponsorship of the Naval Sea systems Command's surface ship concept formulation (CONFORM) program. SHIPDOC is currently being used in support of several feasibility and preliminary level SES designs. The program has several novel features including an open-ended, user-created ship description and the potential to model all types of ships both enhanced and conventional, surfaced and submerged. This capability has been combined with a nonlinear optimization algorithm that solves for the minimum weight ship subject to user controlled constraints. This paper presents a brief overall description of SHIPDOC and its current capabilities followed by a synopsis of ship types, both surface and submerged, which have been designed with the program in order to illustrate SHIPDOC's practical design capability.

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FUTURE PROPULSION MACHINERY TECHNOLOGY FOR GAS-TURBINE POWERED FRIGATES, DESTROYERS, AND CRUISERS

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NAVAL ENGINEERS JOURNAL 1984年第2期96卷 34-46页

作者： BASKERVILLE, JE QUANDT, ER DONOVAN, MR USN The Authors Commander James E. Baskerville USNis presently assigned to Naval Sea Systems Command (NA VSEA) as the Ship Design Manager for the DDG 51 the Navy's next generation surface combatant. A graduate of the U.S. Naval Academy Class of 1969 he is a qualified Surface Warfare Officer and designated Engineering Duty Officer (ED). He received his M.S. degree in Mechanical Engineering and his professional degree of Ocean Engineer from the Massachusetts Institute of Technology (MIT) and holds a patent right on an Electronic Control and Response System. His naval assignments include tours in USSRamsey (FFG-2) Aide and Flag Lieutenant to the Commander Naval Electronic Systems Command and Ship Superintendent Surface Type Desk Officer and Assistant Design Superintendent at NA VSHIPYD Pearl Harbor. He was awarded the Meritorious Service Medal for distinguished performance at Pearl Harbor Naval Shipyard. As an author he has contributed articles to the ASNEJournaland given presentations at local sections on ship design the use of innovative technology in ship repair and maintenance and the costs and risks associated with engineering progress. Commander Baskerville is a registered Professional Engineer in the State of Virginia an adjunct professor teaching marine engineering at Virginia Tech. and in addition to ASNE which he joined in 1975 is a member of SNAME Tau Beta Pi Sigma Xi ASME and the American Society of Heating Refrigeration and Air Conditioning Engineers (ASHRAE). Dr. Earl R. Quandt:received his degree of Chemical Engineer from the University of Cincinnati in 1956 and his Ph.D. degree in Chemical Engineering from the University of Pittsburgh in 1961. He worked in the naval reactors program at the Bettis Atomic Power Laboratory from 1956 to 1963. Since that time he has been with David Taylor Naval Ship Research and Development Center Annapolis Maryland where he is Head of the Power Systems Division. He contributed to this paper while on a one year assignment to the U.S. Naval Academy as V

A turning point occurred in naval engineering in 1972 when the U.S. N avy chose to use marine gas turbines for the propulsion of its new SPRUANCE and PERRY Class ships. This paper reviews the more than twenty years of experience with turbine technology and its design integration into combat ships needed to make that decision. It is concluded that the availability of a good second generation aircraft derivative engine with proven reliability and a strong commercial base, i.e., the LM-2500, was as important to the decision as was the predicted improved ship effectiveness and cost benefits. This paper discusses improvements that can be made to the twin engine, single gear, single propeller shaft system. Focusing only on this mechanical transmission concept, it addresses the impact of possible improvements to the engine, gear, and shafting. In particular, the paper discusses current LM-2500 related R&D efforts to: (a) obtain improved part-power fuel rates, (b) integrate with a reversing reduction gear, and (c) add on a waste heat recovery steam cycle. Looking ahead to the year 2000, this paper suggests that a successor to the ubiquitous LM-2500 will appear in the 15 MW power range to provide the next step in the evolution of the twin engine package. This new naval engine will most likely be based on an aircraft core that exists at present, such that it will have demonstrated its reliability and commercial potential through many hours of testing prior to its mid-1990 marine conversion. This new engine is expected to offer improved air flow, an excellent fuel rate (approaching a flat 0.30 LB/HP-HR), and effective maintenance monitoring, all at some expense in size, weight, and cost. The year 2000 engine will burn a liquid hydrocarbon fuel similar to JP-5 because of its aircraft origins. Combined with advances in gear and shafting technology, the full twin engine propulsion system of the year 2000 should be markedly lighter, smaller, and more efficient than today's units.

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DESIGN OF THE NFR-90

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NAVAL ENGINEERS JOURNAL 1991年第2期103卷 29-49页

作者： SCHAFFER, RL KLOEHN, HG Roger L. Schaffer is currently the manager of preliminary design for Advanced Marine Enterprises in Arlington Virginia. Mr. Schaffer received bachelor degrees in naval architecture and marine engineering and aerospace engineering from the University of Michigan in 1971. In 1974 he received his master's degree in naval architecture from MIT. Mr. Schaffer started his career with the Naval Ship Engineering Center and has worked for Boeing Marine Systems Hydronautics and Designers & Planners. He was associated with various phases of the NFR-90 program from 1982 until. 1990. His last NFR-90 assignment was design integration manager for the International Ship Studies Company (ISS) in Hamburg West Germany where he was responsible for all naval architectural work as well as combat system installation and marine engineering integration with the platform. He is a registered professional engineer. Harvey G. Kloehn received his B.S. degree in electrical engineering from Marquette University in 1951. He went to work in the Bureau of Ships and spent 32 years in naval combat systems engineering. Mr. Kloehn also served on active duty in the U.S. Navy from 1955 to 1958. Mr. Kloehn retired from the Naval Sea Systems Command in 1985 as technical director to the deputy commander for AAW/surface warfare. He is a charter member of the Senior Executive Service. After a brief retirement he went to work for NKF Engineering and then for Westinghouse as ship design manager and later chief engineer of the NA TO Frigate Program assigned to Hamburg West Germany. Mr. Kloehn received the ASNE Jimmie Hamilton award for the best paper published in the Journal in 1972. He is a registered professional engineer.

The NATO Frigate Replacement for the 1990s (NFR-90) Project was a unique approach to naval ship design and acquisition. It would have been the first U.S. Navy surface combatant primarily designed by an international organization. As a planning scenario, up to 60 ships, including 18 for the U.S. Navy, were to be acquired by the eight participating nations, making it potentially the largest NATO project ever attempted. Approximately 1,000 man years over a 10-year period were invested in the project. The project was prematurely terminated in January 1990. Nevertheless, a significant amount of work had been completed;the basic design of the ship was firmly established by a preliminary design, the combat system was thoroughly studied, and the economics of the program were well established. This paper describes the project, the technical aspects of the ship and combat system design, its innovative features and significant economic advantages. The conclusions relative to Aegis vs. NFR-90 or NFR-90/ Aegis mix (Table 14) are the opinions of the authors and the estimates of associated costs have not been validated by the Naval Sea systems Command.

关键词： Naval Vessels

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master ORDNANCE REPAIR APPLIED - STANDARD ITEM 009-67

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NAVAL ENGINEERS JOURNAL 1986年第3期98卷 35-42页

作者： STIMSON, WA MARSH, MT UTTICH, RM William A. Stimsonreceived his B.S. degree in mathematics from the University of Texas at El Paso in 1964 and his M.S. degree in engineering from the University of Santa Clara in 1971. He served in the U.S. Army Artillery during the Korean Conflict and subsequently was employed at IBM Huntsville Alabama until 1968 where he worked in the design of automatic control systems of the Saturn vehicle. From 1968 until 1971 he was employed at Ames Research Center Moffett Field in the design of nonlinear control systems for sounding rockets and pencil-shaped spacecraft. Following this Mr. Stimson worked at Hewlett Packard Sunnyvale California as a test engineer in automatic test systems. Since 1973 Mr. Stimson has been employed at the Naval Ship Weapon Systems Engineering Station Port Hueneme. He was a ship qualification trials project supervisor for many years and is now serving as master ordnance repair deputy program manager. Mr. Stimson is a member of the American Society of Naval Engineers and is program chairman of the Channel Islands Section. Cdr. Michael T. Marsh USNreceived a B.S. in mathematics from the University of Nebraska and was commissioned via the NESEP program in 1970. He holds an M.S. in computer science from the U.S. Navy Postgraduate School and an MBA from the State University of New York. Cdr. Marsh has served in the weapons department of USSFrancis Hammond (FF-1067) and of USSJohn S. McCain (DDG-36). He was weapons officer aboard USSSampson (DDG-10). As an engineering duty officer Cdr. Marsh was the technical design officer for PMS-399 at the FFG-7 Class Combat System Test Center from 1978 to 1982. He is presently combat system officer at SupShip Jacksonville and has been active in the MOR program since its inception. Cdr. Marsh is also the vice chairman of the Jacksonville Section of ASNE. LCdr. Richard M. Uttich USNholds B.S. and M.S. degrees in mechanical engineering from Stanford University. He enlisted in the Navy in 1965 serving as an electronics technician aboard USSNereus (A

The 600-ship United States Navy offers private shipyards an unprecedented opportunity for overhaul of surface combatants with complex combat systems. Recognizing the new challenge associated with the overhaul of high technology combat systems in the private sector, the Navy in 1983 established the master ordnance repair (MOR) program. This program, a joint effort of the Naval Sea systems Command (NAVSEA) and the Shipbuilders Council of America (SCA), was designed to identify and qualify those companies and private shipyards technically capable of managing combat systems work and conducting combat system testing. Standard Item 009–67 describes the role of the MOR company in combat system overhaul. It defines terms that are important to understanding the item itself, and imposes upon the prime contractor an obligation to utilize the MOR subcontractor in a managerial capacity. Specific tasks are assigned to the MOR company in planning, production, and testing. Finally, this standard item describes to the Navy planner how to estimate the size of the MOR team appropriate to the work package, a feature that will ensure that combat system bids are tailored to a specific availability.

关键词： WARSHIPS

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Frailty and Other Factors Associated With Early Outcomes in Middle-to Older Age Trauma Patients: A Prospective Cohort Study

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American Journal of Geriatric Psychiatry 2024年第2期32卷 244-255页

作者： Yeh, Tian-Shin Kang, Jiunn-Horng Littlejohns, Thomas J. Wu, Chia-Chieh Chen, Jin-Hua Piravej, Krisna Chiu, Wen-Ta Lam, Carlos Department of Physical Medicine and Rehabilitation School of Medicine College of Medicine Taipei Medical University Taipei Taiwan Department of Physical Medicine and Rehabilitation Wan Fang Hospital Taipei Medical University Taipei Taiwan Department of Epidemiology and Nutrition Harvard T. H. Chan School of Public Health Harvard University Boston MA United States Department of Physical Medicine and Rehabilitation National Taiwan University Hospital Taipei Taiwan Department of Physical Medicine and Rehabilitation College of Medicine National Taiwan University Taipei Taiwan Department of Physical Medicine and Rehabilitation Taipei Medical University Hospital Taipei Taiwan Graduate Institute of Nanomedicine and Medical Engineering College of Biomedical Engineering Taipei Medical University Taipei Taiwan International Ph.D. Program in Medicine College of Medicine Taipei Medical University Taipei Taiwan Professional Master Program in Artificial Intelligence in Medicine College of Medicine Taipei Medical University Taipei Taiwan Nuffield Department of Population Health University of Oxford Oxford United Kingdom Emergency Department Wan Fang Hospital Taipei Medical University Taipei Taiwan Department of Emergency School of Medicine College of Medicine Taipei Medical University Taipei Taiwan Graduate Institute of Data Science College of Management Taipei Medical University Taipei Taiwan Institutional Research Center Office of Data Science Taipei Medical University Taipei Taiwan Biostatistics Center Department of Medical Research Wan Fang Hospital Taipei Medical University Taipei Taiwan Department of Rehabilitation Medicine Faculty of Medicine Chulalongkorn University Bangkok Thailand Department of Chula Neuroscience Center King Chulalongkorn Memorial Hospital Bangkok Thailand Graduate Institute of Injury Prevention and Control College of Public Health Taipei Medical University Taipei Taiwan AHMC Health System Alhambra CA United States

Objectives: To prospectively investigate associations of frailty and other predictor variables with functional recovery and health outcomes in middle-aged and older patients with trauma. Design: Single-center prospective cohort study. Setting: Emergency department of Wan Fang Hospital in Taiwan. Participants: Trauma patients aged 45 and older. Measurements: Frailty was assessed with the Clinical Frailty Scale (CFS). Injury mechanisms, pre-existing diseases, and fracture locations were recorded at baseline. The primary outcome was functional recovery assessed using the Barthel Index (BI). Secondary outcomes were new care needs, unscheduled return visits, and falls 3 months postinjury. Results: A total of 588 participants were included in the final analysis. For every one-point increase in the CFS, the multivariable-adjusted odds ratio (OR, 95% confidence interval [CI]) of failure to retain the preinjury BI was 1.34 (1.16–1.55);associations were consistent across levels of age and injury severities. Significant joint associations of frailty and age with poor functional recovery were observed. CFS was also associated with new care needs (OR for every one-point increase, 1.36, 95% CI, 1.17–1.58), unscheduled return visits (OR 1.26, 95% CI, 1.04–1.51), and falls (OR 1.23, 95% CI, 1.01–1.51). Other variables associated with failure to retain preinjury BI included road traffic accident and presence of hip fracture. Conclusion: Frailty was significantly associated with poor functional and health outcomes regardless of injury severity in middle-aged and older patients with trauma. Injury mechanisms and fracture locations were also significant predictors of functional recovery postinjury. © 2023 American Association for Geriatric Psychiatry

关键词： Clinical Frailty Scale Frailty functional recovery injury middle-to older age

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COMBAT system INDUSTRIAL-TESTING - MEASUREMENT OF SUCCESS

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NAVAL ENGINEERS JOURNAL 1986年第5期98卷 47-57页

作者： TRESSLER, DL HART, JB Dennis L. Tresseler is currently combat system test team leader for the combat systems test and evaluation branch of the Naval Sea Systems Command (SEA 61 × 11). Mr. Tresseler graduated in 1972 with a degree in mechanical engineering technology. He began his career at Newport News Shipbuilding in 1972 where he was a test director responsible for weapon system installation alignment and testing in CGN-36 thru 40 and CVN-68 and 69. In 1977 he came to the Washington area and worked for various contractors in technical and managerial positions before coming to NA VSEA in 1981. He is a member of the Naval Institute and his paper on “FF-1041 Class Modernization” has been accepted for publication in the Proceedings. J.B. Hart is currently the senior program manager combat systems for VSE Corporation headquartered in Alexandria Virginia. He is the program manager for VSE's master ordnance repair (MOR) team. His previous position was with COMPTEK Research Inc. Virginia Beach as senior combat systems engineer. Mr. Hart earned his BS degree from the University of New York in general engineering. He retired as chief ordnance control warrant officer after 22 years of service in 1982. While on active duty he served in various combat systems capacities since 1968 the most noteworthy of which were as ship's combat systems test officer/fire control officer on USS Belknap (CG-26) bringing her back into commission through major reconstruction and as combat system chief onboard USS Albany (CG-10) assisting in test and delivery of the first NTDS model 4.0 software program as well as numerous control systems updates both software and hardware.

This is an overview of the combat system test and certification (CST&C) program as a subset of the total ship test program (TSTP) for active fleet surface ships. The paper will discuss how the T&C program measures not only the suitability of repairs and modifications done during a ship's combat system industrial availability in a public or private yard period, but also the impact that successful program conduct has on the materiel effectiveness throughout a ship's operational cycle. The CST&C management organization and responsibilities, including NAVSEA's master ordnance repair program as well as combat system code 190's relationship to the CST&C program and the impact of pre- and post-industrial testing requirements on the actual conduct of industrial testing will be addressed.

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Transient Thermal Analysis of Welding Fixtures Design

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IOP Conference Series: Earth and Environmental Science 2018年第1期195卷

作者： M T Anual T R Sahroni S Akmal F A Nasution Faculty of Manufacturing Engineering Universiti Teknikal Malaysia Melaka Hang Tuah Jaya 76100 Durian Tunggal Melaka Malaysia Industrial Engineering Department BINUS Graduate Program – Master of Industrial Engineering Bina Nusantara University Jakarta Indonesia 11480 Faculty of Manufacturing Engineering Innovative Software System & Services Research Group Centre for Advanced Computing Technology Universiti Teknikal Malaysia Melaka Hang Tuah Jaya 76100 Durian Tunggal Melaka Malaysia. Industrial Engineering Department Faculty of Engineering Bina Nusantara University Jakarta Indonesia 11480

This paper presents the design and analysis of welding fixtures based on transient thermal analysis. Welding fixtures is designed to hold and support the workpiece securely during the welding process. The heat transformation from the workpiece could lead the temperature rises and impacts to the welding fixtures. Therefore, the study introduces the development of welding fixtures as one of a safety measure prevents the welder from injury while handling welding process. The conceptual design of welding fixtures and material were applied to conduct the simulation. Transient thermal analysis was performed on temperature and total heat flux by using computer aided engineering software. The result shows the analysis of equivalent stress, total deformation, factors of safety, fatigue life and fatigue damage. Furthermore, the equivalent stress failure theory used to predict yielding in welding fixture design. The design of welding fixtures and material selection were proposed to hold and support the workpiece securely.

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Developing a prototype concurrent design tool for composite topside structures

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NAVAL ENGINEERS JOURNAL 1997年第3期109卷 279-290页

作者： Dirlik, S Hambric, S Azarm, S Marquardt, M Hellman, A Bartlett, S Castelli, V Steve Dirlik:began his career at the Naval Surface Warfare Center Carderock Division in 1981 as an aerospace engineer co-op student. He completed his bachelor of science degree in aeropace and ocean engineering from Virginia Polytechnic Institute and State University in 1985 and his master of science degree in aerospace engineering from the University of Maryland in 1990. Mr. Dirlik recently completed a master of science program in applied physics at The Johns Hopins University and currently works in the Radar Cross Section and Target Physics Branch of the Signatures Directorate at the Naval Surface Warfare Center Corderoke Division. He has worked on Navy low observable programs since 1990. Stephen Hambric:is a research associate at the Applied Research Laboratory at The Pennsylvania State University. He received his B. S. and M.S. degree in mechanical engineering from Virginia Polytechnic Institute and State University and his D. Sc. in mechnical engineering from the George Washington University. He has worked on several computer aided multidiscikplinary design and optimization projects over the years including an automated propeller design system and a structural acoustic optimization capability. Dr. Shpour Azarm:is currently working as an associate professor with the Design and Manufacturing Group of the Department of Mechanical Engineering at the University of maryland at College Park. Dr Azarm's expertise is in the areas of optimization-based designed and concurrent design and optimization of multidisciplinary systems. He was a consultant at Black & Decker Corporation (summer 1996) and worked as a Navy senior summer faculty fellow (summer 1995) and a NASA summer faculty fellow (summer 1994). He was a visiting scientist at NASA Langley Research Center for Multidisciplinary Analysis and Applied Structural Optimzatiom at the University of Siegen in Germany (spring 1992) and the Design Institute of the Technical University of Denmark (summer 1990). Dr Azarm was an associate technical editor of the ASME Jour

A prototype concurrent engineering tool has been developed for the preliminary design of composite topside structures for modern navy warships. This tool, named GELS for the Concurrent engineering of Layered Structures, provides designers with an immediate assessment of the impacts of their decisions on several disciplines which are important to the performance of a modern naval topside structure, including electromagnetic interference effects (EMI), radar cross section (RCS), structural integrity, cost, and weight. Preliminary analysis modules in each of these disciplines are integrated to operate from a common set of design variables and a common materials database. Performance in each discipline and an overall fitness function for the concept are then evaluated. A graphical user interface (GUI) is used to define requirements and to display the results from the technical analysis modules. Optimization techniques, including feasible sequential quadratic programming (FSQP) and exhaustive search are used to modify the design variables to satisfy all requirements simultaneously. The development of this tool, the technical modules, and their integration are discussed noting the decisions and compromises required to develop and integrate the modules into a prototype conceptual design tool.

关键词： Warships

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Total ship training for future aircraft carriers

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NAVAL ENGINEERS JOURNAL 2000年第3期112卷 111-123页

作者： Whitten, T Rikansrud, E Mr. Tim Whitten:is the Training Manager for the NAVSEA CVNX Future Aircraft Carriers Program. Prior to coming to NAVSEA Mr. Whitten worked at the Naval Air Warfare Center Training Systems Division (NAWCTSD) as the Front End Analysis Lead for the San Antonio Class Amphibious Transport Docking Ship (LPD 17). He holds a master's degree in counseling psychology from Nova University Fort Lauderdale Florida. He received his bachelor's degree in psychology from the University of Central Florida Orlando Florida. Mr. Edward Rikansrud:is the CVNX Project Engineer for Training Systems at NAWCTSD. Mr. Rikansrud has held project engineering positions for a wide variety of surface subsurface and air training system development programs. In addition to CVNX Mr. Rikansrud has most recently been involved with the development of shipboard total ship training systems for the LPD 17 and DD 21 (Surface Combatant for the Twenty first Century) platforms. He holds a bachelor of science degree in electrical engineering (BSEE)from the University of Florida Gainesville Florida.

The use of technology to assist in the missions of the Navy has changed. The twenty-first century will see a Navy with fewer but more technical ships, smaller yet more innovative shipboard crews, and the need for rapid responses to changing world battle and peacetime scenarios. A recent study (Defense Science Board 1997) has noted the Navy is compelled to build ships that will operate with smaller crews at the same time operational environments require increased capabilities. The Defense Science Board study (1997) further states that, "Training is a force multiplier that allows manning reductions through better use of personnel onboard." The purpose of this paper is to describe a total ship training philosophy for the CVNX class of future aircraft carriers. The Navy has developed an affordable plan to evolve the baseline design of CVNX over multiple hulls for the new construction of aircraft carriers (NAVSEA 1999). Each of these platforms will employ successively more advanced training methods and systems, culminating in a final design that incorporates the most capable ship board total ship training program ever fielded aboard an aircraft carrier.

关键词： Aircraft carriers

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THE PATROL FRIGATE program‐A NEW APPROACH TO SHIP DIGIGN AND ACQUISTION

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Naval Engineers Journal 1973年第4期85卷 82-91页

作者： NEWCOMB, JOHN W. DITRAPANI, ANTHONY R. Mr. John W. Newcomb received his undergraduate education at Webb Institute of Naval Architecture graduating in 1966 and is currently completing requirements for a Master of Business Administration degree at the George Washington University. After gradwlting from Webb he was employed by Texaco Inc. Marine Department and later served three years active duty in the Navy as the DEG-7 Project Oficer at Supervisor of Shipbuilding Conversion and Repair Third Naval District. Subsequent thereto he was employed by the Naval Ship Research and Development Center prior to assuming his present position in the Ship System Design Division of the Naval Ship Engineering Center. He is a member of ASNE and SNAME. Mr. Anthony R. Di'hapani received his BS degree in Mechanical Engineering from the University of Wisconsin in 1958 and subsequently completed course requirements for a Master of Engineering Science while an evening student at the George Washington University. He began his engineering career in 1958 in the BuShips Steam Turbine and Gear Branch specializing in steam turbine systems for nuclear submarines. In 1962 after completing a Navy-sponsored Electronics Training Program he joined the SQS-26 Sonar Project and served as Head of the Special Projects Section and subsequently the Test and Analysis Section until selected in 1967 to head the ASW Branch for the newly-churtered DXIDXG Project now the DO963 Ship Acquisition Project in the Naval Ship System Command. In 1970 he was designated a8 Acting Director of the DD963 Technical Management Plans Division and when the PF Program emerged in 1971 was reassigned as Deputy Project Manager for the Patrol Frigate Project.

Late in 1970, Admiral E. R. Zumwdt, Chid of Naval Operations, directed that study begin towards development of a new class of ocean escort to be known BS Patrol Frigate (PF) to take over some of the duties of the Navy's World War II destroyers as these 25 year old ships are retired from the active Fleet. At the same time, the Department of Defense, was significantly revising its basic policies for the development and acquisition of major weapons systems, and PF became the Nay's first major ship claw acquisition under these new policies. This new requirement, as atmound in DOD Directive 5000.1, along with the program constraints imposed by the CNO, required the development of a philosophy and approach towards design, test and evaluation and acquisition which was significantly Merent from ship procurements of the recent past. This paper disc the overall acquisition proms for the Patrol Frigate Class BS it is being developed and implemented to meet these needs and constraints, and provides a commepfary regarding the effectiveness of the appraach as of January 1973. © 1973 by the American Society of Naval Engineers

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