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NAVAL ENGINEERS JOURNAL 1979年第4期91卷 69-76页

作者： RYAN, FN BERLIN, J Mr. Floyd N. Ryan graduated from Frostburg State College and has performed graduate studies in Technology of Management at American University and University of Southern California. He is presently Executive Director of the Surface Missile Systems Sub-Group in the Naval Sea Systems Command. He was previously Deputy Project Manager of the MK-92 FCS/MK-75 Gun Project Deputy Systems Engineering Manager in the AEGIS Project and Surface Missile Systems Branch Head in the Naval Ordnance Systems Command. His earlier experience with the Department of the Navy included the Engineering Interface Management Office in the Bureau of Ships the Foreign Ship Systems Engineering Office and Switching Systems Design Office at RCA Service Company and he served for four years in the U.S. Navy as an Electronic Technician Petty Officer. In addition to ASNE he is a member of the Association of Scientists and Engineers and is the Executive Director (NAVSEA) for the 1978-79 term. In addition to several outstanding performance awards and citations for achievement Mr. Ryan received the Navy Meritorious Civilian Service Award for exceptional contribution to the development of the AEGIS Weapon System. Mr. Jack Berlin received his Bachelor's degree in Electrical Engineering from the City College of New York and his M.S. degree in Electrical Engineering from Columbia University. He spent eight years in the Radar and Microwave Electronics Section of the Naval Material Laboratory. Subsequently. he has had extensive experience in Radar and Fire Control Systems. This has included responsibility for the design and field evaluation of the GFCS MK 87 Radar. From 1972 to 1973 he was the Sperry Program Manager for the Fire Control System (FCS) MK 92. His current assignment is Assistant Manager for New Developments of Missile and Gun Fire Control Systems for the U.S. Navy. He is a member of the Tau Beta Pi and Eta Kappa Nu Honorary Societies.

The MK 92 Fire Control System (FCS) & a new, integrated, highly reliable and light-weight U.S. Navy Fire Control System for missile and gun control. This system, which is in production for the FFG, PCG, PGG and PHM Ship Classes, provides the detection and automation required for modern naval warfare. Search radar data & presented at a very high rate at the operator's console, a highly integrated man-machine interface. Utilization of monopulse and “track-while-scan” techniques result in multiple target tracking capability. The system console(s) offer a self-contained command and control capability and, in addition, standard digital computer channels provide the versatile interface with the ship's command and control, integrating the complete engagement process. Error cancellation techniques are employed to obtain high performance accuracy even under severe environmental conditions. The low manning requirement for both operation and maintenance is a key system attribute for all applications. Comprehensive “at-sea” evaluations, performed by the U.S. Navy, demonstrated successful system operation in all modes of surveillance, multi-target tracking and simultaneous missile and gun engagements. The “at-sea” performance record of the FCS MK 92 was cited by the Chief of Naval Operations to have established new standards for Naval Surface Weapons systems.

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ADVANCED-CYCLE GAS-TURBINES FOR NAVAL SHIP PROPULSION

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NAVAL ENGINEERS JOURNAL 1984年第3期96卷 262-271页

作者： BOWEN, TL GROGHAN, DA Thomas L. Bowen began his career at the David W. Taylor Naval Ship Research and Development Center in 1969 by enrolling in the Cooperative Education Program at the Annapolis laboratory. He earned a Bachelor of Science degree in chemical engineering in 1973 at West Virginia Institute of Technology. Daniel A. Groghan:received a Bachelor of Science degree in mechanical engineering from West Virginia Institute of Technology in 1966 and later did graduate work at the George Washington University and the University of Maryland. He came to the Naval Ship Systems Command in June 1966 and began working in the Internal Combustion and Gas Turbine Engines Branch. He worked on development of the Orenda OT-4 recuperated gas turbine and marinization of the Garrett 831 gas turbine. He was also project engineer responsible for fleet installations and product improvements on the Solar Saturn gas turbines Boeing gas turbines American Locomotive diesels Electro-Motive diesels and Ruston Pax-man diesels. In 1976 he became head of the Engines Research and Development Branch where he was responsible for such programs as development of hot section gas turbine materials improved gas turbine inlets Pratt and Whitney FT9 gas turbine General Electric LM2500 Condition Monitor and initiation of the RACER program. In 1982 he became the Program Manager for propulsion systems development where he is responsible for developments on the DDG-51 AOE-6 and initiation of the recuperated cruise gas turbine.

Investigations are currently being conducted by the Navy and several contractors to determine the technical feasibility and cost effectiveness of advanced regenerative or intercooled-regenerative gas turbines as a naval propulsion engine for future mid-size surface combatants. A comparison of the performance characteristics of these engines indicates that significant increases in the thermal efficiency above current simple-cycle engines will result by adding heat exchangers for regeneration alone or with intercooling. Design and performance characteristics of several advanced-cycle gas turbines are described which utilize turbomachinery from various existing simple-cycle gas turbines. Estimates of the weight and volume of recuperators and intercoolers for these conceptual engines are provided. The nominal part-load fuel consumption trends of the simple-cycle and the advanced-cycle engines are used to compare annual fuel usage of typical ships with various combinations of propulsion engines. The relative impacts of the advanced-cycle gas turbine on propulsion machinery spaces are compared with other energy efficient prime movers using the simple-cycle gas turbine as the baseline. Commercial applications for an advanced-cycle gas turbine are surveyed according to output power and market sector. This paper presents an overview of current results and discusses the technology areas which require additional investigation.

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FOCAS - A NEW LOOK IN COMBAT SYSTEM SIGNAL TRANSMISSION

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NAVAL ENGINEERS JOURNAL 1983年第3期95卷 51-62页

作者： SLEMON, CS ABBOTT, JW Charles S. Slemon:graduated from Brown University with an Sc.B. Degree in Physics and did graduate work in semiconductors at the School of Electrical Engineering Cornell University sity receiving an M.S. degree. In 1972 he received an NSF grant to study the temperature dependence of crystal structures and while at Cornell he developed various fabrication and testing techniques with new semiconductor compounds. Upon joining Tetra Tech Inc. in 1976 he established and is responsible for their fiberoptic laboratory. He has carried out many programs involved in fiberoptic links for secure communication for various government agencies in which he authored numerous classified reports and developed special fiberoptic devices and system. He has also carried out studies and hardware development and evaluation programs for the military and commercial clients including marine and deep sea uses of fiberoptics for NOSC ONR and other off-shore industry contractors. For NAVSEA he authored several reports investigating the potential uses and advantages that fiberoptic technology offers to Navyshipboard operations. Mr. Slemon has published many articles and made numerous presentations in the field of fiberoptics. He has also taught several short courses on the subject and is the holder of several patents. Mr. Jack W. Abbott:received his BSME degree from Stanford University in 1960 and his Masters (MEA) degree from George Washington University in 1975. He holds a Professional Engineer License in the state of California. Mr. Abbott served as a naval officer – aboard a destroyer for 3 years. He worked for the Garrett Corporation for nearly 8 years involved with gas turbine design development and application. For the last 15 years Mr. Abbott has been directly involved with all aspects of destroyer design including the Canadian DDH 280 U.S. DD 963 and DD 993 destroyers. Currently Mr. Abbott is the NAVSEA Program Manager of the Ship Systems Engineering Standards (SSES) Program – responsible for developing combat system inter

This article introduces the concept of a truly Universal Signal Distribution Network. The emergence of fiberoptic technology as a viable signal transmission medium now gives the N avy the opportunity to use Fiber Optic Cabling and Switching (FOCAS) to implement a universal network. A FOCAS Network can handle all present or future shipboard signal distribution architectures such as point-to-point or data bus. Furthermore, compared to existing cable installations, this network offers lower cost through reduction of the number of cables, weight, and volume, freedom from interference and EMP effects, increased redundancy, and higher operational flexibility. In addition, it will easily satisfy all future expansion or changes in signal distribution by providing at least a ten fold increase in data rate capacity over existing electrical cabling. This last feature alone holds the potential for allowing upgrading and conversion of modern combat systems without need for adding new cabling in the ship. Along with the introduction of the concept of a Universal FOCAS network and its practical benefits and capabilities, this article presents a trade-off between the Radar Data Distribution Network on the FFG and an analogous FOCAS network. Though far from optimized, the resultant FOCAS network shows that the conversion of existing shipboard networks to FOCAS is straightforward and provides a reduction of at least 90% in cable volume and weight and lower cost in cable purchase and installation.

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SEA LANCE WEAPON DEVELOPMENT - SYSTEM AND NAVAL engineering ASPECTS OF THE CAPSULE

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NAVAL ENGINEERS JOURNAL 1988年第3期100卷 204-214页

作者： BOOTH, RJ The authoris a senior specialist system engineer in the Sea Lance Program Defense Systems Division Boeing Aerospace Company Seattle Washington. He received his B.S. in 1960 from the U.S. Naval Academy and later a naval engineer degree and a M.S.M.E. degree from Massachusetts Institute of Technology in 1967. Prior to graduate school he was trained in nuclear power and served on USSSargo(SSN-583). After graduate school he served in various engineering duty officer billets at Supervisor of Shipbuilding Groton Conn. Mare Island Naval Shipyard Ship Repair Facility Yokosuka Japan and Puget Sound Naval Shipyard. Upon retirement from the Navy in 1980 he consulted for Tracor Inc. and prior to joining Boeing Aerospace Company was with John J. McMullen Associates Inc. from 1981 to 1985. He is a registered professional engineer in the state of Washington and besides ASNE he is a member of SNAME and ASME. He presented a paper on 3-M systems at ASNE day 1980.

The developmental Sea Lance Weapon System is an encapsulated supersonic standoff antisubmarine warfare missile, launched from an attack submarine torpedo tube. The buoyant capsule rises to the surface, broaches, the forward closure separates, and the rocket motor ignites, powering the missile and payload from the capsule to the target coordinates. This paper emphasizes the system engineering and naval engineering aspects of the Sea Lance capsule, a lightweight high strength composite material pressure hull. Performance, environmental and interface requirements were identified to which analyses and comparisons were made. Concept development tradeoff studies comparing different methods of launch, materials, and structural geometry led to reasons that drove selection of a composite material for the capsule. Encapsulation, buoyancy, and underwater propulsion concepts with advantages and disadvantages of each concept are compared. Determination of expected shock loads and the derivation of requirements this placed on the capsule to protect the missile are covered. Capsule requirements imposed by transportation and handling, submarine weapon shipping, and torpedo tube launch are explained. The capsule cylinder material is a layered composite material with a pressure vessel sandwich layer consisting of filament wound graphite-epoxy skins with phenolic honeycomb in between, overlaid with a damage resistant layer of filament wound Kevlar over a crushable honeycomb. Future marine possibilities of composite capsule applications are presented. The paper concludes with the naval engineering advantages of composites capsules.

关键词： ORDNANCE

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COMPUTER-AIDED engineering AND SHOCK ANALYSIS FOR THE FOUNDATION OF A MODULARIZED VERTICAL LAUNCHING SYSTEM

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NAVAL ENGINEERS JOURNAL 1989年第2期101卷 34-43页

作者： WU, PY KANE, HP ELDER, RR REEVE, KM Philip Y. Wu received a B.E. degree in naval architecture and marine engineering from National College of Marine Science and Technology Taiwan and a M.E. degree in naval architecture and offshore engineering from U. C. Berkeley. Prior to joining John J. McMullen Associates Inc. (JJMA) in 1983 he worked on hydrodynamic projects at Brown and Root Inc. Houston and at Baker Marine Engineers Inc. where he developed and designed various classes of offshore jack-up rigs and semisubmersibles. After transferring to the JJMA's Arlington Va. office he focused on U.S. naval ship structural designs. He is currently a senior naval architect and a member of ASNE SNAME and ASME. Harry P. Kane is a senior project engineer in the Ship Modularity Section John J. McMullen Associates Inc. Arlington Va. He has a B.S. degree from Woodbury University and has attended numerous other training programs at the Universities of Nevada California Texas and Virginia. He has been employed as a program management engineer on a wide spectrum of design programs ranging from space booster systems remote sensors underwater acoustic systems ship systems Navy RDT&E management and technical program analysis. Currently he serves as a project leader for the application of modular weapons to different ship design programs. He is a member of the ASNE Journal Committee the Security and Intelligence Foundation and a life member of ASNE and the American Defense Preparedness Association. Robert R. Elder received a B.S.E. degree in naval architecture and marine engineering from the University of Michigan in 1969. He was commissioned an engineering duty officer and served aboard USS Guam (LPH-9) and at the Naval Ship Engineering Center Hyattsville Maryland. Prior to joining John J. McMullen Associates Inc. in 1980 he worked in various ship technical design disciplines at J.J. Henry Inc. and gained program management experience at Booz Allen Applied Research and Scientific Management Associates. He is currently the manager of the Ship M

The major objective of this paper is to describe a computer aided methodology for structural integration and analysis. Using the example of recent work in the installation of modular gun and vertical launch missile systems in warships, the reader is guided through a typical case of computer aided structural design and shock analysis, how the models are defined and tested, how the models are modified in order to be compatible with computer capacity, how structural elements are selected to simplify computations, and finally how the results of these operations are used to define the final product before construction and installation. With the maturation of the computer aided process as applied to the whole ship product, more attention must be focused on improving the individual elements of computer aided design (CAD), computer aided engineering (CAE) and computer aided manufacturing (CAM) and the integration of these processes and their products through computer integrated manufacturing (CIM). The application of the CAE techniques described herein to large maritime systems such as combatant, auxiliary and support, and commercial ships and to other large structures such as semisubmersible and fixed platforms is powerful and highly in demand. There is now a means to optimize large structural systems in terms of their discrete subsystems and components and harmonize the entire design while providing the proper design integrity at each successive level of detail.

关键词： Warships

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COMMERCIAL DEVELOPMENT OF OCEANS

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NAVAL ENGINEERS JOURNAL 1976年第1期88卷 21-26页

作者： SONENSHEIN, N USN (RET.) The Author graduated from the U.S. Naval Academy in the Class of 1938. His work has included instruction in Naval Construction and Marine Engineering at Massachusetts Institute of Technology which lead to his MS degree in 1944 and in the Advanced Management Program at Harvard Graduate School in 1964. As an Engineering Duty Officer (ED) he has served in various Navy commands including Mare Island and New York Naval Shipyards USS Philippine Sea (CVA-47) during the Korean conflict as Chief Engineer and on the Staffs of both the Commander-in-Chief and the Commander Service Force U.S. Pacific Fleet as Fleet and Force Maintenance Officer. Within the Naval Ship Systems Command and its predecessor Bureau of Ships his duties included those of Director Facilities Division Head Hull Design Branch Director Ship Design Division Assistant Chief for Design Shipbuilding and Fleet Maintenance and from 1969 to 1972 as Commander Naval Ship Systems Command. Other assignments have included Project Manager for the Navy's Fast Deployment Logistic Ship Project from 1965 to 1967 Deputy Chief of Naval Material for Logistic Support from 1967 to 1969 and Chairman Naval Material Command Shipbuilding Council which commenced upon completion of his tour as Commander Naval Ships Systems Command in 1972. On 4 September 1973 he was appointed Director of the Defense Energy Task Group (DETG) and subsequently on 15 November 1973 as Director of Energy for the Department of Defense. Upon his retirement from the naval service in November 1974 he became Assistant to the President Global Marine Development Inc. based in Newport Beach Calif. A former President of ASNE from 1970 to 1971 he is currently the Vice-President of the Society of Naval Architects and Marine Engineers. In addition he is a member of the honorary engineering society Sigma Xi and listed among those named in “Who's Who in America.”

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COMPARATIVE NAVAL ARCHITECTURE ANALYSIS OF NATO AND SOVIET FRIGATES .2.

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NAVAL ENGINEERS JOURNAL 1980年第6期92卷 84-93页

作者： KEHOE, JW GRAHAM, C BROWER, KS MEIER, HA USN Capt. James W. Kehoe Jr. USNreceived his U.S. Navy commission in 1952 after receiving his B.S. degree in Mathematics from Stonehill College in Massachusetts. and subsequently he attended the Sun Diego State College from which he received his M.A. degree in Education. His sea duty assignments have included three Destroyers most recently as Commanding Officer. USS John R. Pierce (DD-743).and three Aircraft Carriers. most recently as Engineer Officer in theUSS Wasp (CVS-18).Ashore he has had duty in the Navy's Nuclear Weapons Program the POLARIS Missile Program and as an Instructor in Project Management. Currently he is the Director Comparative Naval Architecture Program in the Naval Sea Systems Command. Capt. Kehoe has been a member of ASNE since 1974 and has authored two technical papers on U.S. and Soviet ship design practices which were published in theU.S. Naval Institute Proceedingsand theNaval Engineers Journal. Cdr. Clark Graham USNbetter known as “Corky.” graduated from the U.S. Naval Academy in 1964 and subsequently received his Ph. D. degree from Massachusetts Institute of Technology (MIT) in 1969. Currently. he is assigned to the Naval Sea Systems Command as the DDGX Ship Design Manager. Previous to this assignment. he was the NAVSEA Cruiser Project Manager Representative and SUPSHIP Newport News Project Officer for Nuclear Cruisers. He has served in three combatant ships including the Guided Missile CruiserUSS Gridley (CG-21)as Engineer Officer. He has had a tour of duty at the former Naval Ship Engineering Center as a Ship Design Manager and as Director U.S./Soviet Comparative Ship Design Study. During his duty in the Office of the Chief of Naval Operations (OP-96). he was the Technical Assistant for the Advanced Naval Vehicles Concept Evaluation. In addition. Cdr. Graham has taught Ship Design in the Naval Construction and Engineering Curriculum at MIT. and recently he developed a course in Comparative Naval Ship Design for the MIT Professional Summer Program. He has had over 15 Techn

This paper is a report of a comparative naval architecture analysis of United States, Canadian, French, Netherlands, German, British, and Soviet Frigates. The investigation covered general arrangements, weapons and sensors, survivability, intact and damaged stability, manning and personnel support (all of which me discussed in PART I), and hull form, propulsion, speed range, sea keeping, ship size, and future growth capability (to be published in PART II). Weapons and sensors were only addressed in terms of their impact on the weight and volume of the ship. The actual military effectiveness of each Frigate was not assessed.

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JTIDS AIRBORNE ADAPTIVE ARRAY ANTENNA

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NAVAL ENGINEERS JOURNAL 1980年第3期92卷 119-128页

作者： COLEMAN, EW HEFFNER, WH Mr. Ernest W. Coleman is a Project Engineer in the Microwave Technology Branch Radar Division Sensors & Avionics Technology Directorate. of the Naval Air Development Center (NADC). Warminster. Pa. He began his professional career at NADC in 1971 after receiving his B.S. degree in Electrical Engineering from the Tennessee Technological University. He has held several engineering positions in the areas of Design. Development. Simulation and Test & Evaluation of both antenna systems and avionics systems. He did his graduate study in Electromagnetics at Ohio State University and has authored several technical papers and numerous reports. Currently. he is Project Engineer for the development of an Adaptive Array Antenna to be used with future communication systems such as JTIDS. Mr. W. Herbert Heffner Jr. is Head of the Microwave Technology Branch at NADC Wurminster. Pa. He received his B.S. degree in Electrical Engineering from Drexel University in 1962. and since then has held several design and development engineering positions at NADC and in the Naval Material Command. He attended Ohio State University during 1964 and 1965 receiving his M.S. degree in Electrical Engineering upon completion of his studies. For the past fourteen years he has been involved in the analysis. design development. and evaluation of aircraft antenna systems. radonies. and radar cross-section reduction techniques. In 1976. he was temporarily assigned as Program Element Administrator Surface and Aerospace Target Surveillance. under the Deputy Chief of Naval Material for Development. Naval Material Command. In his four years since returning to NADC. his responsibilities have included developing antennas for future Electronic Warfare and Communication Electronic Counter-Countermeasure applications as well as digital computer antenna analysis techniques and radar camouflage of tactical aircraft.

The Navy is developing an airborne adaptive array antenna for the Joint Tactical Information Distribution System (JTIDS). JTIDS is a Tri-Service multi-channel, multi-function system to provide an advanced communication, navigation, and identification (CNI) capability for a wide variety of uses. JTIDS terminals perform multiple digital voice/data functions and relative navigation as well as the standard TACAN and IFF transponder functions. The system uses a low-duty cycle, spread-spectrum waveform and advanced coding techniques to provide secure, jam-resistant, and low probability of exploitation CNI functions. Among the important factors which determine the ultimate utility of a JTIDS terminal is the performance of the antenna system. Inadequate antenna performance could seriously degrade and possibly even negate the primary platform mission. Recent advances in antenna and data processing techndogiea promise to provide JTIDS with adequate gain and pattern coverage as well as substantial AJ (Anti-Jam) margin to complement JTIDS signal processing. The desired improvement in AJ protection can be achieved by capitalizing on the spatial filtering properties of adaptive array antennas. This paper presents the “trade-offs” which must be addressed in the design of an adaptive array antenna for airborne JTIDS terminals and the design philosophy currently in development by the Navy.

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ADVANCED ELECTRIC PROPULSION, POWER-GENERATION, AND POWER DISTRIBUTION

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NAVAL ENGINEERS JOURNAL 1994年第2期106卷 83-92页

作者： DADE, TB The Author:graduated from the U.S. Naval Academy in 1963. He is qualified in submarines and served on the Nathan Hale (SSBN-623) and Triton (SSN-586). He transferred to the Engineering Duty Officer Program with assignments at Charleston Naval Shipyard SupShip Newport News CINCLANTFLT Fleet Maintenance and Howard W. Gilmore (AS-16) primarily involving submarine new construction overhaul and maintenance. Upon retiring in 1983 Mr. Dade was employed by M. Rosenblatt & Son becoming the chief engineer of their Newport News office. In early 1990 he was employed by Newport News Shipbuilding as a manager in advance propulsion technology. His primary responsibilities included the development of electric propulsion generation and distribution systems. He received an MS degree in nuclear engineering and an MBA degree from Penn State University and is a registered professional engineer. Professional societies include ASNE SNAME and the Naval Submarine League.

Investigations into the development of electric drive systems for both submarines and surface ships have been ongoing for several years. These studies led us to the conclusion that accepted contemporary concepts did not offer the full potential envisioned for electric drive. These concepts did not fully consider non-developmental (existing) technology, and the evolutionary approach to system development did not adequately address ship system interface, cost and other shipbuilder concerns. A ''clean sheet'' approach was taken to designing advanced electric propulsion, generation and power distribution systems and equipment. Primary objectives were reduced cost, weight, and volume with improved arrangement flexibility, operation, power allocation, growth potential, reliability, maintainability, survivability and efficiency. This paper focuses on the technologies involved with component development, the installation of the system on a typical submarine, and the resulting benefits.

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THE MACHINERY ALTERATION program

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NAVAL ENGINEERS JOURNAL 1985年第4期97卷 138-145页

作者： CIERI, AM KENNEY, LH A.M. Cieri:is the program manager for the Machinery Alteration (MachAlt) Program at the Naval Ship Systems Engineering Station (NAVSSES). Mr. Cieri also currently serves as the head Fleet Liaison Unit Atlantic at NAVSSES. He working with Mr. E.T. Kinney Deputy Director Machinery Group Ship Design and Engineering Directorate (SEA 56B) Naval Sea Systems Command (NAVSEA) conceived and structured the policy and procedures for the MachAlt Program in FY 83 as a result of a need identified by COMNAVSEA's ShipAlt Improvement Program. Mr. Cieri has been with the NAVSSES (formerly NAVSEC Philadelphia) organization since 1971. He served in the Hull and Deck Machinery Department before moving to his current staff position in 1982. His 23 years of federal service also includes nine years with the Philadelphia Naval Shipyard in various assignments in both the planning and production departments. Mr. Cieri has been a member of ASNE since 1979. Mr. Cieri was the recipient of the Joseph Cacciola Technical Achievement Award at NAVSSES in 1984. USN CDR. L.H. Kenney USN:was commissioned out of the Naval Reserve Officers Training Corps at Massachusetts Institute of Technology where he received his bachelor of science. He holds a master's degree in electrical engineering from the Naval Postgraduate School. He has served at the Philadelphia and Boston Naval Shipyards the headquarters of the Naval Sea Systems Command and its predecessor NAVSHIPS as staff officer to Commander Service Squadron Six in the Mediterranean in the USS Essex and with the Joint Military Assistance and Advisory Group Tehran. He is currently the director of Fleet Coordination Office at the Naval Ship Systems Engineering Station in Philadelphia.

The ship alteration (ShipAlt) process does not lend itself to the rapid accomplishment of small scale design changes to improve equipment performance and reliability. It is a necessarily lengthy and complex system, designed to deal with very large and costly projects. With one document, it causes replacement or modification of major ship systems. For this reason, ShipAlts are subjected to many reviews and design changes so that the final product will materially enhance the fleet's operational capabilities. The competition for scarce resources has left the Navy with a large number of needed design changes with no programmatic means to accomplish them. Various Navy communities have developed procedures to address this problem. This paper will show how the Naval Sea systems Command-sponsored machinery alteration (MachAlt) program addresses the small design change problem for hull, mechanical and electrical (HM&E) systems. MachAlts are design changes to equipments that do not require system interface changes and may be installed outside of industrial activities. The paper will discuss how the MachAlt concept was developed and will give a status report and assessment of the program to date.

关键词： NAVAL VESSELS

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