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NAVAL ENGINEERS JOURNAL 1993年第4期105卷 48-52页

作者： BOWES, WC COMMANDER NAVAL AIR SYSTEMS COMMAND Admiral William Bowes: a native of New York graduated from the University of Idaho and its NROTC Regular Program in June of 1963. He is a 1968 graduate of the United States Naval Test Pilot School and received his master's degree in systems acquisition management from the Naval Postgraduate School in March 1974. Upon receiving his wings in December 1964 he joined the light attack community at the Naval Air Station Lemoore California. He served on combat missions from the Kitty Hawk (CV-63) Enterprise (CVN-65) and Coral Sea (CV-43). Vice Admiral Bowes flew 350 combat missions in Southeast Asia between 1965 and 1972. An experienced test pilot Admiral Bowes has had three tours at the Naval Air Test Center Patuxent River Maryland. Having piloted every jet aircraft that has been in the fleet since the 1960s he has flown more than 5000 hours in over 50 different U.S. and foreign military aircraft. He is an associate fellow in the Society of Experimental Test Pilots. Admiral Bowes began his program management experience in January 1980 in the Naval Air Systems Command as the F/A-18 assistant program manager for systems and engineering. In December 1983 he was assigned as the F-14 aircraft and Phoenix missile system program manager. He managed the Phoenix missile system until June 1985 and the F-14 until November 1987. During that tour of duty the F-14A (PLUS) was delivered to the Navy. He was promoted to rear admiral in November 1987 at which time he was assigned as the director Cruise Missiles Project. In May 1988 he became the first director of the Unmanned Aerial Vehicles Joint Project. In March 1991 Vice Admiral Bowes became the commander of the Naval Air Systems Command. His decorations include the distinguished service medal 3 Legions of Merit 3 Distinguished Flying Crosses 36 Air Medals 2 individual awards 8 Navy Commendation Medals the Vietnamese Air Gallantry Cross and various unit commendations and campaign medals.

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FFG-61 PROTOTYPE DIGITAL TECHNICAL LIBRARY

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NAVAL ENGINEERS JOURNAL 1992年第2期104卷 58-68页

作者： VINROOT, CA ORNER, JG USN Capt. Charles A. Vinroot USN (Ret.)retired from the U.S. Navy in September 1991 following over 27 years of active duty as an engineering duty officer. He holds a BSEE from North Carolina State University and a MSEE and professional degree from the U.S. Naval Postgraduate School. During his naval career he served on USSIndependence (CVA-62) and USSLuce (DLC-7/DDC-38). He also served at Supship Quincy Mass. and Hunters Point Naval Shipyard. He was stationed in Washington D.C. with assignments at CNO (OP 98) ASN (S&L) and the Naval Sea Systems Command. Captain Vinroot was technical director of the Battleship Reactivation Program (PMS 378) technical director of the Destroyer Acquisition Program (PMS 389) and deputy program manager of the Amphibious Warfare and Strategic Sealift Program (PMS 377). Most recently he served as program manager for Gas Turbine Surface Combatants (PMS 314) and Surface Combatants (PMS 330). Captain Vinroot is now employed by PRC Inc. and serves as technical director for the Advanced Technology Division in Crystal City Va. Jeffery G. Ornergraduated from Wittenberg University in Springfield Ohio in 1979 with a bachelor of arts degree in political science and earned a master's of science degree in business from The American University in Washington D.C. in 1982. He has ten years of professional experience with the Naval Sea Systems Command in positions with responsibilities for logistic support planning policy and delivery computer-aided acquisition and logistic support and Fleet Modernization Program (FMP) and ship construction issues. He was a key player in establishing the current FMP integrated logistic support (ILS) process and in implementing of the Ships' Configuration and Logistic Support Information System (SCLSIS). His current position as Fleet Logistic Support Branch head for the Surface Combatant Program includes responsibility for logistic support and management of ship configuration and logistic data for all surface combatant ships (except for Aegis ships). In

USS Ingraham (FFG-61) is the prototype ship for NavSea's Advanced Technical Information system (ATIS). ATIS is a digital technical library, which holds on optical disks the ship's 2,000 technical manuals and 73,000 drawing sheets. It contains a detailed ship's configuration index (derived from SCLSIS) to lead the user to the proper drawing or manual, and it replaces the ship's aperture cards and the second (library) copy of the technical manuals. ATIS, and the data standards established and tested through ATIS development, will be the technical library portion of micro-SNAP and SNAP III. It also forms an important part of NavSea's plans to utilize EDMICS data. This paper describes the goals and technical concepts behind the development of ATIS. Problems encountered, solutions developed, and lessons learned are detailed. Special attention was paid to the application of the Computer Aided Acquisition and Logistic Support (CALS) standards, problems caused by conflicts and ambiguities in those standards, the standards. Original program goals are compared with actual operational experiences. Plans for future expansion are outlined, including applications of this technology in the availability planning and execution process. A comparison is developed among the various methods of optical imaging and their costs and benefits.

关键词： Information Retrieval systems

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EMI - THE ENEMY WITHIN

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NAVAL ENGINEERS JOURNAL 1992年第2期104卷 69-80页

作者： BARON, NT CEBULSKI, DR Neil T. Baronis currently the team leader for the combat system topside design work for amphibious assault auxiliary mine warfare and Coast Guard ships. He sits on the IEEE SCC-28 Committee for personnel radiation hazards and is extensively involved in the EM engineering initiative at NavSea. Mr. Baron has lectured at the MIT Summer Professional Series on the subject of electromagnetic interference. While attending Marquette University he started his career with the Navy as a coop student supporting personnel radiation hazard assessments. After graduating with a BS in bio-medical engineering he took an electronics engineer position in the Systems Electromagnetic Division. Since then he has lectured on Navy training films and has developed several software packages which have pushed the state-of-the-art in EMI assessment. Mr. Baron has prepared several reports and professional papers. He has worked on several professional committees and in February of 1991 was awarded the “Young Engineer of the Year Award” which was presented by the D.C. Council of Engineering and Architectural Societies. Donald R. Cebulskiis currently the head of the Topside Design Division in the Naval Sea Systems Command Weapons and Combat System Directorate. He graduated from the University of Michigan with a bachelor's degree in 1963 and a master's degree in 1977 both in naval architecture and marine engineering. He started his career in 1964 at the Bureau of Ships and joined the Aircraft Carrier Section of the Arrangements Branch in Hull Design. During the past 25 years he has included almost every naval ship type in his ship arrangement experience and in October of 1988 he transferred to the Topside Design and Integration Branch in the System Electromagnetics Division Sea 06. Mr. Cebulski has written several papers on ship arrangements computer aided design and ship topside design. He prepared and presented lectures at the MIT Professional Series on ship topside design and has served on many ASNE committees. He is currently the

Electromagnetic interference (EMI) is one of the major contributors to mission degradation in our fleet today due to the increase in population and sensitivity of both topside and below deck electronic systems. Sensitive combat systems designed to counter intelligent and deceptive targets can be confused by the complex intra-ship EM environment. This can cause identification failure or losing "track" of a hostile or incoming missile or even engaging "friendly targets." Topside design and integration efforts have been used to reduce EMI, but this is not the total solution to the problem. A program of total ship and system EMI assessment and control must be implemented. This program must exploit electromagnetic compatibility (EMC) optimization in electronic circuit design and take advantage of and (in some cases) direct topside shapes and structures to control the propagation of desired and undesired EM energy. Positive and active control of EM design characteristics are absolutely required before optimum combat system effectiveness can be realized. This paper will describe the current topside design process, EMC improvements being made, and how the process is being integrated into, and is dependent upon, the ship design process. It will give examples of some of the major mission degrading EMI problems in the fleet today and how past problems were solved with existing EM analysis programs. It will also discuss the control of EM energy in new design through the use of techniques being developed such as ray tracing and ray casting. The paper projects where the challenges lie for future topside and EM engineering designers and describes how the equipment technology transfer process must be better integrated to meet the challenge of effective EMI control.

关键词： Signal Interference

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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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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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ELECTROEXPULSIVE SEPARATION system SHIPBOARD APPLICATIONS

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NAVAL ENGINEERS JOURNAL 1990年第5期102卷 55-66页

作者： EMBRY, GD ERSKINE, RW HASLIM, LA LOCKYER, RT MCDONOUGH, PT Gerald D. Embry:is a senior marine engineering specialist with Ingalls Shipbuilding Inc. in Pascagoula Mississippi. He earned his BS degree in mechanical engineering in 1961 at the University of Illinois. He has twenty-eight years experience in the ship design and construction field and has held several positions at Ingalls Shipbuilding ranging from engineering section manager to group manager of project engineering. He has held other responsible engineering positions at General Dynamics/Electric Boat and several consulting firms. He has been a registered professional engineer with the Commonwealth of Massachusetts since 1966 a member of ASNE since 1978 and a member of SNAME since 1968. Robert W. Erskine:is a naval architect specialist with Ingalls Shipbuilding Inc. in Pascagoula Mississippi. He earned a BSE in naval architecture and marine engineering in 1967 at the University of Michigan and an MBA in management in 1983 at the University of Southern Mississippi. He has 22 years of engineering and managerial experience in the Navy and in the commercial marine industry. Achievements during his 13 years with Ingalls include an Aegis Excellence A ward for his work on the CG-47 class cruiser program. He has also held responsible positions with ship operation and design consultant firms in New York City. He participated in the Bearing Sea trial described herein. He has been a member of ASNE since 1977 and a member of USNI since 1985. Leonard A. Haslim:is a program manager at NASA Ames Research Center Moffett Field California. He has earned advanced degrees in chemistry mathematics and engineering from UCLA UC and Stanford. He has forty-five years experience in aerospace engineering including responsible research development and engineering positions with the U.S. Navy Lockheed Missile and Space Ford Aerospace NASA and as a consultant for Arthur D. Little Company. He holds several patents including the Electro-Expulsive Separation System for which he earned NASA's 1988 Inventor of the Year Award.

THE AUTHORS 6 ABSTRACT Shipboard weather deck ice removal is a laborious, time consuming, dangerous task. The current operational scenario consists of sailors wielding hickory baseball bats. This paper describes a viable alternative, the Electro-Expulsive Separation system (EESS), originally developed by NASA. EESS technology has been designed to remove ice from aircraft surfaces. Developmental testing, which led to acceptance of this new device, is discussed together with its theory of operation. The resultant aircraft applications are described. The need to adapt this aircraft technology for shipboard applications is recognized by the Navy, the Coast Guard, the State of Alaska, and the commercial shipbuilding industry. Fishing vessels risk sinking every winter due to excessive ice accumulation on their decks and superstructure. Navy and Coast Guard cold water operations have been hampered for centuries due to severe ice accumulation during inclement weather. With the encouragement and cooperation of the State of Alaska, an EESS test program was formulated and subsequently conducted aboard an Alaskan Resources vessel in the Bering Sea. This testing is described, with lessons learned. Future test programs are identified, requisite for successful adaptation of this technology to combat and commercial shipboard applications.

关键词： Ships

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WHITHER FAST SEALIFT - A CALL TO ACTION

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NAVAL ENGINEERS JOURNAL 1989年第4期101卷 81-92页

作者： HOPE, JP The author:received his B.S. degree in mechanical engineering from the University of Virginia in 1969. Upon graduation he began his career with the Navy in NavShips and in 1971 he transferred to the ship arrangements branch of NavSec. He was selected for the Navy long-term training program at The George Washington University in 1974 and completed the program in 1976 with the degree of master of engineering administration. While at NavSec he served as a task leader on numerous ship designs. He was selected for the first class of the NavSea commander's development program. While on that program he served in NavSea combat system program management system engineering and machinery engineering positions and also was assigned to the Navy secretariat. In 1985 he joined the staff of the assistant secretary of the Navy for shipbuilding and logistics where he is the assistant director for naval construction.

This paper begins with comments on accomplishments in sealift and a summary of current problems in fast sealift. These include: few fast sealift ships in the inventory, a diminishing industrial base capable of producing such ships, and a lack of production programs to build ships that would increase our national fast sealift capability. The paper discusses strategic mobility concepts and highlights system interactions and linkages in moving war materials and replacement forces from depots and factories to the front lines. From this foundation, the paper then discusses operational requirements “pull” as related to analysis and allocation of performance among components of the strategic mobility system. Sealift technology options are characterized and performance potential of these options are described. These characterizations include speed, ship lift capacity, equal cost fleet size, and fuel demands for a range of speeds from 24 to 50 knots. Performance potential for each option includes the total fleet lift capability stream over a 100-day time span for a notional mission with and without an assumed rate of attrition. Alternative program plans are described for each technology option addressing technological risk, system and component development needs, design requirements, production strategies, acquisition time lines, and resource requirements. The paper then revisits the operational requirements from a technologist's perspective. In a technology “push” approach, a set of practical and achievable requirements are selected that could be the basis of an effective and cost efficient production program for fast sealift ships. Finally, the paper concludes with a call to action that would suggest a modest reallocation of transportation resources to establish and sustain a fast sealift production program, sustain a sector of the maritime industrial base hard pressed by a lack of commercial shipbuilding, and achieve a relatively near-term increase in fast sealift capabil

关键词： Military engineering

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BOTTOM BOUNCE ARRAY SONAR SUBMARINE (BBASS)

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NAVAL ENGINEERS JOURNAL 1989年第5期101卷 59-72页

作者： JACKSON, HA NEEDHAM, WD SIGMAN, DE USN (RET.) Capt. Harry A. Jackson USN (Ret.) is a graduate of the University of Michigan in naval architecture and marine engineering and completed the General Electric Company's 3-year advanced engineering course in nuclear engineering. He has been an independent consulting engineer and participated in projects involving deep submergence waste disposal water purification and submarine design both commercial and government. Cdr. William D. Needham USN is currently assigned as the repair officer of USS Hunley (AS-31) in Norfolk Virginia. He received a regular commission through NROTC at Duke University where he graduated magna cum laude in mechanical engineering. Selected for the Nuclear Power Program he served as a division officer on the USS Grayling (SSN-646) as the production training assistant at the MARE Prototype Reactor in New York and as blue crew engineer of the USS Nathan Hale (SSBN-623) where he completed the requirements to be designated qualified for command of submarines. Following line transfer to the EDO community in 1981 he completed a tour as nuclear repair officer (Code 310) at Norfolk Naval Shipyard and earned master of science in materials science and ocean engineer's degrees at MIT. His awards include the Meritorius Service Medal Navy Commendation Medal Navy Achievement Medal Spear Foundation Award and the Vice Admiral C.R. Bryan Award. Cdr. Needham also holds a master of arts degree in business management from Central Michigan University. Capt. Jackson was technical director of Scorpion Search Phase II. The on-site investigation included descending over 12 000 feet to the bottom of the ocean. He was also supervisor of one of the Navy's largest peacetime shipbuilding and repair programs. His responsibilities included supervision of design production and contract administration. Capt. Jackson was third from the top in managaement of a major shipyard and responsible for design material procurement work order and financial control of two major surface ship prototypes as well a

Anticipated technological advances in the quieting of potential adversary submarines mandate the use of increasingly effective detection systems for U.S. ASW forces. Based on the assumptions that sonar will continue to be the primary means of detection and that the effectiveness of each individual sonar element will not change markedly, one must increase the projected area of the sonar array to improve its capability. The primary SSN mission of anti-submarine warfare will hence require increasing the hull area devoted to the primary sonar detection system. A revolutionary hull form is proposed that maximizes the area available for this purpose. The advantages and disadvantages of this hull form are discussed and feasibility study level design parameters and arrangements presented.

关键词： Submarines

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OUT-OF-PRODUCTION MICRO-ELECTRONICS - AN ACHILLES HEEL OF DEFENSE systemS

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NAVAL ENGINEERS JOURNAL 1988年第5期100卷 69-72页

作者： MACKENZIE, CM WOOTTEN, R HOY, K NEELY, J KOSCO, D SMITH, W C. Malcolm Mackenzie:is the Materials and Parts Availability Control program manager at U.S. Army Laboratory Command Adelphi Md. Mr. Mackenzie has a B.S. degree in mechanical engineering from Northwestern University an M.S. degree in the same field from the University of Michigan and an M.B.A. from East Texas State University. Richard Wootten:is project officer of the U.S. Army Material Command's Materials and Parts Availability Control Information Data System Project Adelphi Md. Mr. Wootten holds an associate's degree in mechanical engineering from Northern Virginia Community College and a Bachelor of Science in Electronics Engineering from The University of Alabama. Kevin Hoy:is manager of the Microelectronics Obsolescence Management Program at the Naval Avionics Center Indianapolis. Mr. Hoy holds both bachelor and master of science degrees in mathematics from Purdue University. James Neely:is leader of the Materials Management Team Industrial Materials Division in the Directorate of Manufacturing Air Force Systems Command Dayton Ohio. Mr. Neely holds a bachelor's degree in political science from The University of Georgia and a master of science degree in public administration from The University of Missouri. Don Kosco:is an electronics engineer currently involved with introducing new technologies into weapons systems. He is in the Directorate of Reliability Maintainability and Technology Policy HQ Air Force Logistics Command Dayton Ohio. Mr. Kosco holds a bachelor of engineering degree from Widener University a master's in systems engineering from The Air Force Institute of Technology and an MBA from the University of Texas at San Antonio. William Smith:is head of the Plans Branch in the Office of Policy and Plans Defense Electronics Supply Center (DESC) Dayton Ohio. He was for many years manager ofDESC's Diminishing Manufacturing Sources (DMS) Program. Mr. Smith holds a bachelor of arts degree in political science from Indiana University.

Both the timely manufacture of defense systems and their subsequent on-line operability depend upon the availability of component parts. The growing problem of microelectronic component nonavailability is casting a shadow over logistics support to these systems. This paper will discuss the causes of the problem and provide some examples of cases confronted by the DoD logistics community. It will also identify some actions which have been taken in the past to manage the issue as well as initiatives now underway. Finally it will look at what lies ahead.

关键词： Microelectronics

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SIMPLIFICATION OF GAS-TURBINE INTAKE ANTI-ICE systemS

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NAVAL ENGINEERS JOURNAL 1988年第1期100卷 45-52页

作者： EXELL, JR KILLINGER, A LCdr. John R. Excell: USN received a bachelor of architecture from the University of Michigan and a master of science degree in mechanical engineering from the U. S. Navy Postgraduate School. He was commissioned in 1973 serving first as damage control assistant aboard USSGuadalcanal(LPH-7) and later as commissioning main propulsion assistant on USSMerrill(DD-976). He became an engineering duty officer in 1979 and served at Norfolk Naval Shipyard as senior ship superintendent for six ships and later within the shipyard Design Department. In May 1984 LCdr. Exell was assigned to the DD-963 Class Special Projects Office as program manager for air system improvements including the bleed air and anti-ice systems. He recently completed the Defense Systems Management College Ft. Belvoir VA and returned to NavSea PMS 377 as deputy for strategic sealift programs. Arthur Killinger:graduated from the University of Maryland in 1968 with a bachelor of science degree in mechanical engineering. He joined MPR Associates Inc. working on submarine safety design reviews following the loss of USSScorpion(SSN 589). After two years in the U.S. Army Nuclear Reactor Program and a year as U.S. Army engineer maintenance advisor in the Republic of Vietnam he returned to MPR Associates Inc. in 1972. Since then he has worked on nuclear power plant projects for several electric utilities as well as submarine and surface ship overhaul and maintenance improvement programs for the U.S. Navy. Mr. Killinger is a member of the American Society of Naval Engineers and the American Society of Mechanical Engineers.

This paper describes the steps taken to simplify the gas turbine intake anti-ice systems on DD-963 and DDG-993 class ships. The anti-ice system was designed and built as fully-automatic protection against intake duct icing on main propulsion turbines and electric generator turbines. Operating experience with the system indicated that it was nonfunctional more than 60% of the time. The system's poor availability was caused by its complexity, lack of use, lack of spare parts, poor training and documentation, and design and material problems. A Navy Independent Design Review Team (IDRT) reexamined the technical bases for installing an automatic anti-ice system and demonstrated that automatic control was not necessary for gas turbine intake duct anti-icing. A series of design review calculations and shipboard tests confirmed that anti-icing protection could be provided by manual control of installed butterfly valves feeding hot air to each turbine intake. The time from the IDRT design simplification recommendations to the first modification of the anti-ice system was less than one year. To date, half of the 30 of the 35 ships in the two classes have been modified. This system simplification will result in life cycle maintenance cost savings in excess of 13 million dollars. Future CG-47 class and DDG-51 class ships will include this simplified approach to anti-ice system design for gas turbine intakes.

关键词： GAS TURBINES

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