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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： Z. Ding C.R. Johnson R.A. Kennedy Department of Electrical Engineering Aubum University Auburn AL USA School of Electrical Engineering Cornell University Ithaca NY USA Department of System Engineering RSPhysSE and Interdisciplinary Engineering Program Faculty of Science Australian National University Canberra ACT Australia

It is shown, through the analysis of nullspace for the channel convolution matrix, that the behavior of a finitely parameterized Godard equalizer in general can never achieve or approximate the desirable global convergence performance of an infinitely parameterized noncausal Godard equalizer. Nullspace theory is supported by a simple example showing ill-convergence of the Godard algorithm.< >

关键词： Convergence Blind equalizers Adaptive equalizers Intersymbol interference Quadrature amplitude modulation Information science Australia Council Algorithm design and analysis Constellation diagram Noise robustness

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SHIP ELECTROMAGNETIC PULSE SURVIVABILITY TRIALS

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NAVAL ENGINEERS JOURNAL 1991年第3期103卷 136-140页

作者： JUMP, ME EMBERSON, WC Michael E. Jumpis the ship group leader in the Electromagnetic Pulse Branch Protection Systems Department Naval Surface Warfare Center White Oak Laboratory Silver Spring Md. He participated in the cooperative education program at the University of Maryland graduating in 1981 with a B.S. degree in electrical engineering. In 1985 Mr. Jump received his M.S. degree in electrical engineering from the Whiting School of Engineering Johns Hopkins University. During the EMPRESS II trial of USSDeyoDD-989 Mr. Jump functioned as the technical trial director and his responsibilities included insuring all trial objectives were appropriately met. William C. Embersonis a systems analyst in the Protection Systems Department of the Naval Surface Warfare Center White Oak Laboratory Silver Spring Md. He received his B.S. degree in electrical engineering from Purdue University in 1964 and his M.S. in electrical engineering at the Illinois Institute of Technology in 1971. Since joining NAVSWC in 1973 he has helped lead the Navy's EMP program to where it is today and has led the development of the center's nuclear warfare analysis capability. Currently he is responsible for the technical direction of an integrated system analysis for the entire spectrum of protection systems programs.

The Navy conducted an EMP (Electromagnetic Pulse) trial on a Spruance class destroyer (USS Deyo;DD-989) during July 1990 using the Electromagnetic Pulse Radio Frequency Environment Simulator for Ships (EMPRESS II). The Navy has selected a layered hardening approach consisting of platform level hardening and system level hardening to provide EMP survivability for the mission critical systems of surface ships. One key question is how much of the hardening can be allocated to and achieved by platform hardening? The other key questions are which systems will also require system level hardening and can system level hardening be effectively achieved? Prior to the trial, a platform level EMP hardening package was installed to evaluate the effectiveness of platform hardening techniques. Electromagnetic interference (EMI) fixes were installed when the EMI fixes were determined to provide system level hardening to emissions similar in frequency content to EMP. Temporary system level EMP hardening measures were also installed on selected combat systems and extensive pretrial EMP susceptibility assessments were performed on many of the ship systems. During the trial period, USS Deyo was subjected to over 700 sub-threat level pulses at increasing power levels. The highest test level during this trial was approximately 10dB below the EMP threat level. The induced transient currents exterior and interior to the ship and on a variety of systems were measured and used to evaluated the effectiveness of the platform hardening and system hardening. During the trial, a number of combat system operability tests were also conducted to help identify potential problem areas and evaluate system performance. This paper describes some of the events prior to and during the USS Deyo trial and the lessons learned as a result of the trial. The lessens learned from this trial will have a positive impact on future ship hardening efforts and EMP trials.

关键词： Warships

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CONFIGURATION STATUS ACCOUNTING MADE AFFORDABLE

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NAVAL ENGINEERS JOURNAL 1991年第6期103卷 63-70页

作者： CONLEY, DT The Authorbegan his Navy career at NOL (now NSWC) White Oak where he designed built and installed underwater acoustic and pressure recording instrumentation. He joined NavSea in 1969 where he performed the full range of program management functions including the acquisition installation test and fleet support for many sonar programs. In 1981 Mr. Conley was assigned a project to reduce the cost and duration of ship overhauls. During the execution of this task he developed a PC based real-time maintenance information system which was used to identify needed repair work (CSMP) record WDC decisions print work packages (SARP) and track work progress (SFOMS). This information system background was invaluable when in 1987 he was assigned to the SCLSIS project the Navy's comprehensive configuration status accounting and logistic information system. Mr. Conley is currently the director Logistics Certification Office (Sea 04L). He received his B.S. in electrical engineering from Tufts University.

This paper describes an affordable automated configuration status accounting system that has been developed to meet the needs of the engineering community, the logistics community and the fleet. Configuration information is vital if the fleet is to be properly supported. Without complete and accurate configuration information that documents what is installed in the ship, including field changes, engineering changes, OrdAlts and MachAlts, proper support is not possible. The information system described in this paper has been installed in over 30 Navy and contractor sites. Results to date have been nothing less than outstanding, with productivity improvements in excess of 500 percent. As budgets get leaner, improvements such as this will become commonplace. We will learn to live within constrained budgets and produce higher quality products. This system is an example of what can be done with emerging technology when properly applied.

关键词： Naval Vessels

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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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FULL-WAVE SOLUTION OF DIELECTRIC LOADED WAVE-GUIDES AND SHIELDED MICROSTRIPS UTILIZING FINITE-DIFFERENCE AND THE CONJUGATE-GRADIENT METHOD

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INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE COMPUTER-AIDED engineering 1991年第4期1卷 346-357页

作者： NARAYANAN, V MANELA, M LADE, RK SARKAR, TK Department of Electrical and Computer Engineering Syracuse University Syracuse New York 13244-1240 Viswanathan Narayanan was born in Bangalore India on December 14 1965. He received the BE degree in Electronics and Communications from B.M.S. College of Engineering Bangalore in 1988. He joined the Department of Electrical Engineering at Syracuse University for his graduate studies in 1989 where he is currently a research assistant. His research interests are in microwave measurements numerical electromagnetics and signal processing. Biographies and photos are not available for M. Manela and R. K. Lade. Tapan K. Sarkar (Sf69-M'76-SM'X1) was born in Calcutta. India on August 2 1948. He received the BTech degree from the Indian Institute of Technology Kharagpur India in 1969 the MScE degree from the University of New Brunswick Fredericton Canada in 1971. and the MS and PhD degrees from Syracuse University. Syracuse NY in 1975. From 1975-1976 he was with the TACO Division of the General Instruments Corporation. He was with the Rochester Institute of Technology (Rochester NY) from 1976-1985. He was a Research Fellow at the Gordon Mckay Laboratory Harvard University Cambridge MA from 1977 to 1978. He is now a Professor in the Department of Electrical and Computer Engineering Syracuse University. His current research interests deal with numerical solutions of operator equations arising in electromagnetics and signal processing with application to system design. He obtained one of the “ best solution” awards in May 1977 at the Rome Air Development Center (RADC) Spectral Estimation Workshop. He has authored or coauthored more than 154 journal articles and conference papers and has written chapters in eight books. Dr. Sarkar is a registered professional engineer in the state of New York. He received the Best Paper Award of the IEEE Transactions on Electromagnetic Compatibility in 1979. He was an Associate Editor for feature articles of the lEEE Antennas arid Propagation Sociefy Newsletter and was

Dynamic analysis of waveguide structures containing dielectric and metal strips is presented. The analysis utilizes a finite difference frequency domain procedure to reduce the problem to a symmetric matrix eigenvalue problem. Since the matrix is also sparse, the eigenvalue problem can be solved quickly and efficiently using the conjugate gradient method resulting in considerable savings in computer storage and time. Comparison is made with the analytical solution for the loaded dielectric waveguide case. For the microstrip case, we get both waveguide modes and quasi-TEM modes. The quasi-TEM modes in the limit of zero frequency are checked with the static analysis which also uses finite difference. Some of the quasi-TEM modes are spurious. This article describes their origin and discusses how to eliminate them. Numerical results are presented to illustrate the principles.

关键词： Waveguides

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ROLE OF SIMULATION IN RAPID PROTOTYPING FOR CONCEPT DEVELOPMENT

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NAVAL ENGINEERS JOURNAL 1991年第3期103卷 204-211页

作者： KING, JF BARTON, DE J. Fred King:is the manager of the Advanced Technology Department for Unisys in Reston Virginia. He earned his Ph.D. in mathematics from the University of Houston in 1977. He has been principal investigator of research projects in knowledge engineering pattern recognition and heuristic problem-solving. Efforts include the development of a multi-temporal multispectral classifier for identifying graincrops using LANDSAT satellite imagery data for NASA. Also as a member of the research team for a NCI study with Baylor College of Medicine and NASA he helped develop techniques for detection of carcinoma using multispectral microphotometer scans of lung tissue. He established and became technical director of the AI Laboratory for Ford Aerospace where he developed expert scheduling modeling and knowledge acquisition systems for NASA. Since joining Unisys in 1985 he has led the development of object-oriented programming environments blackboard architectures data fusion techniques using neural networks and intelligent data base systems. Douglas E. Barton:is manager of Logistics Information Systems for Unisys in Reston Virginia. He earned his B.A. degree in computer science from the College of William and Mary in 1978 and did postgraduate work in London as a Drapers Company scholar. Since joining Unisys in 1981 his work has concentrated on program management and software engineering of large scale data base management systems and design and implementation of knowledge-based systems in planning and logistics. As chairman of the Logistics Data Subcommittee of the National Security Industrial Association (NSIA) he led an industry initiative which examined concepts in knowledge-based systems in military logistics. His responsibilities also include evaluation development and tailoring of software engineering standards and procedures for data base and knowledge-based systems. He is currently program manager of the Navigation Information Management System which provides support to the Fleet Ballistic Missile Progr

A valuable technique during concept development is rapid prototyping of software for key design components. This approach is particularly useful when the optimum design approach is not readily apparent or several known alternatives need to be rapidly evaluated. A problem inherent in rapid prototyping is the lack of a "target system" with which to interface. Some alternatives are to develop test driver libraries, integrate the prototype with an existing working simulator, or build one for the specific problem. This paper presents a unique approach to concept development using rapid prototyping for concept development and scenario-based simulation for concept verification. The rapid prototyping environment, derived from artificial intelligence technology, is based on a blackboard architecture. The rapid prototype simulation capability is provided through an object-oriented modeling environment. It is shown how both simulation and blackboard technologies are used collectively to rapidly gain insight into a tenacious problem. A specific example will be discussed where this approach was used to evolve the logic of a mission controller for an autonomous underwater vehicle.

关键词： Military engineering

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Navy's chlorofluorocarbon/Halon program

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Naval Engineers Journal 1991年第3期103卷 107-117页

作者： Krinsky, Joel L. Noel, William Joel L. Krinskyholds a B.S. degree from the U.S. Merchant Marine Academy (1960) and an M.B.A. from the American University (1966). He is currently the director of The HVAC Submarine Life Support Division within NavSea. He formerly served as the deputy director of the Auxiliaries Division and head of the Air Compressor/Forced Draft Blowers and Valves and Piping Branches within the Auxiliaries Division. He has thirty years experience in the marine engineering and computer fields. He sailed for two years in the merchant marine and then began his career in the Bureau of Ships in 1962 as a project engineer in the Boiler and Heat Exchanger Branch. Mr. Krinsky then served as the systems acquisition manager for navigation systems on attack submarines and aircraft carriers. Mr. Krinsky entered private industry with IBM in 1967 spent eight years in the computer industry serving in various capacities and returned to NavSea in 1975. He served in the U.S. Navy Reserve from 1961 to 1967 and is a member of ASE ASNE and ASTM. Mr. Krinsky currently chairs the ASTM subcommittee for shipboard HVAC (F25.11.07) and is writing the heating ventilation air conditioning and refrigeration chapter of the revised SNAME text on Marine Engineering. William Noelgraduated from Drexel University in 1984 with a B.S. degree in mechanical engineering. He worked at the Naval Ship Systems Engineering Station in Philadelphia in the Air Compressor Branch where he directed improvements to compressed air ship silencing systems. In 1985 he was hired at the Naval Sea Systems Command and spent two years working in the Auxiliary Machinery Division where he was life cycle manager for various air compressors and compressed air system components. In 1989 he earned an M.S. degree in mechanical engineering from the University of Maryland specializing in multi-phase fluid flow and heat transfer phenomena. Since 1987 Mr. Noel has been the project engineer charged with developing replacement refrigerants and fire fighting agents in executing the Navy CFC/

The Naval Sea systems Command is executing a three-phase program to ensure compliance with national regulations, DoD policy, and Navy instructions mandating the phase-out of CFC and Halon use by the Navy. The Navy uses significant quantities of CFCs and Halon as solvents, refrigerants, and fire-fighting agents both in military operations and through specifications and contracts for weapons and support equipment. Phase one of the program plan will be to conserve chemicals through reclaiming and recycling, and by establishing and maintaining a chemical inventory of CFCs and Halons. Phase two will research, develop, and test substitute chemicals and alternative technologies for existing CFC uses. This research will be pursued through Navy and government laboratories, cooperation with chemical and equipment manufacturers, and by participation in government/industry consortiums. Finally, phase three will deploy the replacement chemicals and new technologies into the fleet, and institutionalize the conservation measures developed in phase one. This paper discusses in detail the three phases of the Navy program, and relates the Navy effort to DoD policy, the Montreal Protocol, and Congressional legislation. Unique Navy concerns, research initiatives, and vintaging scenarios for existing equipment are presented.

关键词： Freons

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MAGNETOHYDRODYNAMIC SUBMARINE PROPULSION systemS

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NAVAL ENGINEERS JOURNAL 1991年第3期103卷 141-157页

作者： SWALLOM, DW SADOVNIK, I GIBBS, JS GUROL, H NGUYEN, LV VANDENBERGH, HH Daniel W. Swallomis the director of military power systems at Avco Research Laboratory Inc. a subsidiary of Textron Inc. in Everett Mass. Dr. Swallom received his B.S. M.S. and Ph.D. degrees in mechanical engineering from the University of Iowa Iowa City Iowa in 1969 1970 and 1972 respectively. He has authored numerous papers in the areas of power propulsion and plasma physics and currently is a member of the Aerospace Power Systems Technical Committee of the AIAA. Dr. Swallom has directed various programs for the development of advanced power generation systems lightweight power conditioning systems and advanced propulsion systems for marine applications. His previous experience includes work with Odin International Corporation Maxwell Laboratories Inc. Argonne National Laboratory and the Air Force Aero Propulsion Laboratory. Currently Dr. Swallom is directing the technical efforts to apply magnetohydrodynamic principles to a variety of propulsion and power applications for various marine vehicles and power system requirements respectively. Isaac Sadovnikis a principal research engineer in the Energy Technology Office at Avco Research Laboratory Inc. a subsidiary of Textron Inc. He received his B.S. in engineering (1974) B.S. in physics (1975) M.S. in aeronautics and astronautics (1976) and Ph.D. in physics of fluids (1981) at the Massachusetts Institute of Technology. Dr. Sadovnik has been involved in research work funded by DARPA concerning the use of magnetohydrodynamics for underwater propulsion. He has built theoretical models that predict the hydrodynamic behavior of seawater flow through magnetohydrodynamic ducts and their interaction with the rest of the vehicle (thrust and drag produced). In addition Dr. Sadovnik has been involved in research investigations geared toward the NASP program concerning the use of magnetohydrodynamic combustion-driven accelerator channels. Prior to joining Avco Dr. Sadovnik was a research assistant at MIT where he conducted experimental and

Magnetohydrodynamic propulsion systems for submarines offer several significant advantages over conventional propeller propulsion systems. These advantages include the potential for greater stealth characteristics, increased maneuverability, enhanced survivability, elimination of cavitation limits, greater payload capability, and the addition of a significant emergency propulsion system. These advantages can be obtained with a magnetohydrodynamic propulsion system that is neutrally bouyant and can operate with the existing submarine propulsion system power plant. A thorough investigation of magnetohydrodynamic propulsion systems for submarine applications has been completed. During the investigation, a number of geometric configurations were examined. Each of these configurations and mounting concepts was optimized for maximum performance for a generic attack class submarine. The optimization considered each thruster individually by determining the optimum operating characteristics for each one and accepting only those thrusters that result in a neutrally buoyant propulsion system. The results of this detailed optimization study show that the segmented, annular thruster is the concept with the highest performance levels and greatest efficiency and offers the greatest potential for a practical magnetohydrodynamic propulsion system for attack class submarines. The optimization study results were used to develop a specific point design for a segmented, annular magnetohydrodynamic thruster for an attack class submarine. The design point case has shown that this thruster may be able to provide the necessary thrust to propel an attack class submarine at the required velocity with the potential for a substantial acoustic signature reduction within the constraints of the existing submarine power plant and the maintenance of neutral buoyancy. This innovative magnetohydrodynamic propulsion system offers an approach for submarine propulsion that can be an important contributio

关键词： Ship Propulsion

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A CONCEPT OF OPERATIONS FOR THE RAPID ANTISHIP MISSILE INTEGRATED DEFENSE system (RAIDS) PROTOTYPE

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NAVAL ENGINEERS JOURNAL 1990年第3期102卷 281-288页

作者： ROSSITTO, VS The Author:is an engineering duty officer currently assigned as an electronics research officer in the Tactical Electronic Warfare Division at the Naval Surface Warfare Center Dahlgren Va. LCdr. Rossitto received a B.S. in naval architecture from the U.S. Naval Academy in 1978 and an M.S. in electrical engineering from the Naval Postgraduate School in 1987. He has served as main propulsion assistant and damage control assistant on USSVogelgesang(DD-862) and as ASW officer on USSJohn Rodgers(DD-983). He is presently assigned as NSWC program manager for the Rapid Anti-Ship Missile Integrated Defense System (RAIDS) development.

The increasing capability and proliferation of the modern anti-ship missile (ASM) has significantly complicated shipboard terminal defense. Current tactics used to counter ASMs require extensive manual coordination of stand-alone terminal defense systems. RAIDS is a phased development initiative to improve the ability of surface combatants to perform anti-ship missile defense (ASMD) by providing coordination of existing terminal defense systems, integration and single point control of electronic warfare (EW) functions, and ship specific ASMD training. RAIDS is being rapidly prototyped at the Naval Surface Warfare Center for early fleet integration and will subsequently undergo full scale engineering development in two phases. The RAIDS prototype is an immediate response by the Navy's technical community to the needs of its operational forces and will demonstrate improved ASMD effectiveness with today's combat system. Despite an unusually compressed development period, the prototype is a functional representation of the system planned for fleet introduction in FY 93. RAIDS is by definition a non-traditional addition to today's naval combat system. Full exploitation of current technology is needed to satisfy performance requirements dictated by the stressing environment of modern ASMD. Through effective coordination of existing hardkill and softkill resources, the RAIDS prototype is the first step in the definition of a new standard for ASMD effectiveness. The operational concept definition process for RAIDS is evolutionary to accommodate fleet input during system development. Because of the tactical significance and innovation of this terminal defense integration, operational feedback from initial development tests is considered critical in refining the RAIDS design and operational concept. The prototype will provide the fleet with a broad range of improved capabilities which they will operationally exercise and evaluate at sea in late 1990.

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SHIP SERVICE ELECTRICAL systemS - DESIGNING FOR SURVIVABILITY

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NAVAL ENGINEERS JOURNAL 1990年第5期102卷 32-36页

作者： CERMINARA, J KOTACKA, RO John Cerminara:is a principal engineer with Westinghouse Machinery Technology Division Electrical Systems Department. He holds a B.S. degree in electrical engineering from the University of Pittsburgh. He is a registered professional engineer and a member of IEEE ASNE and the Ship Steering Group of the Combat Survivability Division of ADPA. Mr. Cerminara has had over 30 years of multidiscipline experience ranging from engineering and construction in heavy industry to standards and publications. Past assignments include DOE/ NASA wind turbine project manager for Westinghouse and task leader of MTD electrical systems. Most recent assignments have included hull mechanical and electrical (HM&E) distributive system survivability analyses of the LSD-41 mobility mission area and application and validation of NavSea computer-aided design of Survivable Distributive System (CADSDiS) Program. Rolf O. Kotacka:is presently a ship systems engineer in the Ship Systems Engineering Branch of the Naval Sea Systems Command Engineering Directorate where his primary responsibility is ship system survivability. He is a 1977 graduate of SUNY Maritime College where he received his bachelor of engineering degree in marine electrical engineering as well as a U.S. Coast Guard Third Assistant Engineer License and a commission in the U. S. Naval Reserve. Upon graduation Mr. Kotacka was employed by Charleston Naval Shipyard as a field engineer until 1981 where he gained his background in surface ship HM&E systems and equipment. He then transferred to the Supervisor of Shipbuilding Conversion and Repair Groton where he served as a senior electrical engineer monitoring the design and construction of Trident and 688 class submarines and received the Meritorious Unit Citation. Prior to his present position Mr. Kotacka was the life cycle manager for diesel generator sets in the Naval Sea Systems Command's Generators Branch. He has coauthored several papers dealing with power generation for ASE and SNAME. Mr. Kotacka is also a lieutena

This paper highlights the survivability concerns in the design of ship service power systems. The paper gives a brief description of what constitutes a typical ship service electric power system and concentrates on electric power generation and associated controls. Established survivability design principles and guidelines are highlighted and the application of those guidelines are discussed. General Specifications (Gen Specs) for Ships of the U.S. Navy are cited as the cornerstone for design. Specific design criteria are cited as well as the rationale associated with the survivability design guidelines pertaining to power generation and distribution. The application of these survivability design guidelines plus the use of the deactivation diagram/damage tolerance analysis cited in the Gen Spec section 072e will enhance overall design and help ensure survivable electric power systems for surface combatants.

关键词： Warships

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