作者:
BIONDI, RJKRUGER, BETHE AUTHORS: Mr. Roy J. Biondi:received his B.S.E.E. degree from the University of Illinois and has since taken additional graduate studies at The George Washington University. Currently
he is Head of the Ship Type Combat System Integration Branch (Code-6141) Naval Sea Systems Command. Prior to his present appointment he served as Radar Branch Head in the former Naval Ship Engineering Center (NA VSEC) and was responsible for development and production of shipboard radars such as the AN/SPS-48 AN/SPS-49 AN/SPS-52 and AN/SPS-55. His primary Navy Radar and Combat System experience was attained during his earlier career in the Navy's Bureau of Ships where he was the AN/SPS-48 Radar Project Manager as well as the Navy Tactical Data System Data Processing and Display Project Engineer - a total of twenty years of Navy Radar and NTDS experience. In addition to ASNE which he joined in 1977 he is a member of IEEE and ASE and has had several technical papers published on Radar Radar Processing and Transmission Lines. Mr. Bradford E. Kruger:is a Senior Member of the Technical Staff at ITT Gilfillan
Los Angeles Calif. He received his B.S.E.E. and M.S.E.E. degrees from the University of California at Berkeley in 1955 and 1956 respectively and has been with Gilfillan since then. For the past fifteen years he has been involved in the concept formulation and design of numerous radar systems for the Army Navy and Marine Corps. Most recently he has been the Principal Radar Systems Engineer for the SSURADS then the DDGX Program. In addition to ASNE which he joined in June 1980 he is a member of IEEE and holds several patents in Radar and Antenna Technology.
The best topside location for an antenna is on top of the highest mast on the ship, thus affording all-around coverage and minimum interference. However, usually only one antenna can occupy that site. Modern naval com...
The best topside location for an antenna is on top of the highest mast on the ship, thus affording all-around coverage and minimum interference. However, usually only one antenna can occupy that site. Modern naval combatants have numerous antennas, and the necessary compromises in mounting all of them means that even the best site is often electro-magnetically compromised by adjacent structures and other antennas. A contrary approach is to mount larger antennas lower, and to design the ship to minimize blockage. This is “The UNIMAST Concept,” which argues for a single mast on which are mounted all the ship's major rotating surveillance antennas. The larger antennas rotate around the lower part of the mast, while lighter antennas, e.g., surface search, are sited above. This paper discusses the degradation of sidelobes due to present topside design and numerically relates degradation to Electronic Counter-Countermeasures (ECCM) performance. Removal of that degradation via the UNIMAST Concept requires that a device known as an Annular Rotary Coupler (ARC) be used. The development of just such a high power, wide-band ARC on a Navy-sponsored R&D contract is herein described. Also described is the potential backfitting of the UNIMAST Concept to existing ships; e.g., the DDG-993. Battle damage vulnerability of the UNIMAST Concept with respect to a conventional two mast design is addressed. It is argued that the UNIMAST Concept affords no degradation in vulnerability due to improved potential for protecting vital antenna parts.
作者:
STARK, RESTEMBEL, DMTHE AUTHORS: Capt. Robert E. Stark
USN (Ret.):graduated from the U.S. Naval Academy in 1942 and subsequently was ordered to graduate studies at the Massachusetts Institute of Technology from which he received his M.S. degree in 1948. He retired after twenty-six years of service as a Naval Engineering Specialist. In 1972 he joined Gibbs & Cox Inc. where he has been continuously associated with the FFG 7 design being assigned as the Gibbs & Cox Project Manager since 1973. In 1979 he was promoted to the position of Assistant Vice President. He is a registered Professional Engineer in the state of New York and besides ASNE which he joined in 1962 is a member of the SNAME Council and the societies of Sigma Xi and Tau Beta Pi. Capt. David M. Stembel
Jr. USN: graduated from the U.S. Naval Academy in 1955 and subsequently attended Massachusetts Institute of Technology from which he received his M.S. and Naval Engineer degrees in 1961. His assignments afloat have included Electrical Officer USS Forrestal (CVA-59) from 1955 to 1958 Engineer Officer
USS Dewey (DLG-14) from 1963 to 1965 Assistant SIXTH Fleet Maintenance Officer from 1965 to 1967and Engineer Officer
USS America (CVA-66) from 1970 to 1972. Since 1972 he has been assigned to the Naval Sea Systems Command where he has served as Deputy Project Manager 1200 psi Steam Propulsion Plant Improvement Program Ship Logistic Manager
Escort/Cruiser Ship Logistics Division and since 1979 in his current assignment as Project Manager
Guided Missile Frigate (FFG 7) Ship Acquisition Project. In addition to ASNE which he joined in 1973 he is a member of Tau Beta Pi.
The FFG program has been widely recognized as a shipbuilding program which successfully has met its goals of performance, cost, and schedule. A discussion of this design is given in several other papers. Several of th...
The FFG program has been widely recognized as a shipbuilding program which successfully has met its goals of performance, cost, and schedule. A discussion of this design is given in several other papers. Several of the features which contributed to the success of the FFG 7 Class Design were the use of Standardized Equipment, Validation of Working Drawings, and a Maintenance Concept that concentrated upon safeguarding maintenance and removal procedures. This paper describes the Detail Design Process followed in the development of the FFG 7 Class Design as well as those changes planned for FY79 ships. Emphasis is placed upon the lessons learned and a discussion of those technical and management procedures required to implement satisfactorily an effective Detail Design.
Bottom fishing equipment employed by scallopers and trawlers routinely damage or break important Navy Oceanographic cables resulting in substantial repair coats and unacceptable system interruption. The Civil Engineer...
Bottom fishing equipment employed by scallopers and trawlers routinely damage or break important Navy Oceanographic cables resulting in substantial repair coats and unacceptable system interruption. The Civil engineering Laboratory (CEL), sponsored by the Naval Facilities engineering Command (NAVFACENGCOM), has been developing and validating an engineering concept for a Deep Ocean Cable Burial (DOCB) System. This DOCB System will providethe Navy with an efficient, effective and reliable means of burying cables 3-feet deap in ocean mediments, at speeds not less than one knot, to water depths of 6,000 feet. The DOCB System b a remotely controlled machine which underruns and buries existing (previously laid) cables. It is powered and controlled from a surface ship via an electromechanical umbilica cable. The machine is self-propelled by ducted thrusters and supported on water lubricated skids. The excavation system computer an orbital vibrating plowshareand a vertical waterjet. Full-scale field testing at CEL baa keyed on three areas: •. Quantifying the reduction in drawbar force achieved by applying orbital vibration to an upward cutting plowshare. •. Evaluating a Vertically impinging jet nozzle for depth of a cut M a function of jet operating parameters. •. Demonstrating the effect on the soil drag of a flat-bottomed skid due to forcing a thin layer of water between the skid and the seafloor. The field teats of an orbital vibratory plow were performed in a 1 to 2 psi clay simllar to that found on the ocean floor. The results showed that a 70% reduction in drawbar force was achieved by applying an elliptical orbital vibration. It was also shown that the vibration feature would split or push aside buried rocks which would have stalled a conventional stationary plow. The water jet tests demonstrated that a 2 1/2-in. nozzle cuts 36-in. deep in 1 to 2 psi clay. The nozzle pressure was 75 psi and flow was 1,200 gpm. The water jet did not produce a clearly defined trench, b
This paper discusses the Interactive Graphics System used by the General Electric Company, Medium Steam Turbine Department (engineering & Manufacturing) for designing, drafting, and manufacturing applications. A b...
This paper discusses the Interactive Graphics System used by the General Electric Company, Medium Steam Turbine Department (engineering & Manufacturing) for designing, drafting, and manufacturing applications. A brief overview of the hardware malting up the system is described, followed by a more detailed description of the actual applications. Two-dimensional applications described include a Heat Balance Analysis, Flow Diagrams, and Electrical Schematics. A more fruitful area for increased productivity gains is described in the three-dimensional or mechanical applications including turbine design & layout and bucket design. coordination of the design with manufacturing for numerical control tape generation is described through CAM and Plate Frame Cutting applications. Finally, a short review of the engineering design work using Interactive Graphics is discussed. Productivity gains of 2.6 to 1 are being realized, and the overall savings to the Medium Steam Department are outlined.
作者:
COLEMAN, EWHEFFNER, WHMr. 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 communicatio...
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.
Since the signing of the Contract Design Plane for the CVN 68 (the U.S. Navy's latest Class of Aircraft Carriers) In 1963, considerable technological advances have been made in Naval Ship Design. This paper provid...
Since the signing of the Contract Design Plane for the CVN 68 (the U.S. Navy's latest Class of Aircraft Carriers) In 1963, considerable technological advances have been made in Naval Ship Design. This paper provides specific examples of how new technology has affected traditional Carrier design practices and techniques, and also indicates areas where future advanced technology will be needed. It is divided into four sections: 1) Computer Design Application; 2) Total Ship Energy Conservation Analysis; 3) Advances in Structural Design; and 4) Impact of V/STOL Aircraft. The increased use of the computer to define ship characteristics in the initial stage of ship design is discussed, followed by a report on efforts to include energy conservation as an integral part of the design process. The energy conservation approach uses traditional analytical techniques to develop innovative design configurations that will achieve energy savings. Of the many advances in Carrier structural design, two specific examples are given: 1) Elimination of the infamous “knee-knockers” (high sills in passageway openings) common to Gallery Deck structure, and 2) Successful attempts at reducing the thickness of aircraft elevator platforms. The paper concludes by pointing out some possible challenges facing the ship designer and some of the technology already created by the expected introduction of advanced design Vertical/Short Takeoff and Landing (V/STOL) aircraft.
作者:
SEJD, JJWATKINSON, KWHILL, WFMr. James J. Sejd received his B.S. degree in Civil Engineering from Case
Western Reserve University and has since undergone considerable graduate study at both The George Washington and American Universities. He served almost four years in the U.S. Navy as a Naval Aviator and enjoys the unique distinction of being qualified in both Heavier- and Lighter-than-Air aircraft. Early in his career he was employed at the Navy's Bureau of Ships in the capacity of a Structural Designer and Structural Research Monitor. In 1966 he joined the Staff of the Center for Naval Analyses where he was involved in the mathematical modeling of ships and aircraft and in economic “trade-off‘ analysis. In 1970. he went to the Naval Ship Engineering Center as an Operations Research Analyst in the Ship Design and Development Division. At the present time he is employed as a Program Manager for the Naval Sea Systems Command Ship Design Research and Development Office. A member of ASNE since 1973 he also is a member of the Association of Scientists and Engineers at NAVSEA the Operations Research Society of America and the Lighter-Than-Air Society. Mr. Kenneth W. Watkinson received both is B.S. and M.S. degrees in Engineering Science from Florida State University in 1970 and 1971 respectively. Since graduation
he has been employed at the Naval Coastal Systems Center (NCSC). Panama City. Fla. where he is primarily involved in the investigation of the stability and control of underwater vehicles. For the past four years he has been the Task Leader and Principal Investigator for the NCSC portion of the Advanced Submarine Control Program involved in developing control design methods and the instrumentation system for the Submarine Control System Test Vehicle. Mr.
William F. Hill is currently the ASCOP Program Manager at Lockheed Missiles & Space Company (LMSC) Inc. where he has the overall responsibility for design and construction of the Control System Test Vehicle (CSTV). He entered the aircraft industry in England as an Apprentice w
As part of the Advanced Submarine Control program (ASCOP), the Naval Sea systems Command has developed an open water Submarine Control System Test Vehicle (CSTV). This vehicle is a 1/12 scale model of an SSN 688 Class...
As part of the Advanced Submarine Control program (ASCOP), the Naval Sea systems Command has developed an open water Submarine Control System Test Vehicle (CSTV). This vehicle is a 1/12 scale model of an SSN 688 Class Submarine, with provisions for easy geometric changes. Such changes include alternate Sail size and location, the addition of parallel middle-bodies, alternative tail sections, and alternative control configurations. A self-contained instrumentation and control system provides the capability for “on-board” recording of all relevant Submarine-state variables, over the entire speed and depth range, to a degree of data accuracy exceeding any known system. With the means thus available to correlate measured vehicle hydrodynamics with selected maneuvers, conditions, and changes in hull geometry and control surface configuration, modern mathematical techniques for improving submarine equations of motion can be employed to permit dramatic design enhancements in both safety and performance. This paper provides the rationale and history of the development of this vehicle, a description of the instrumentation and control package, and a description of the vehicle itself.
Dynamic Simulation is defined as the hardware and software required to present to the student operator visual and audible cues and responses that are the same as those encountered when operating the Control Consoles a...
作者:
RUHE, WJUSN (RET.)THE AUTHOR: is a graduate of the U.S. Naval Academy
Class of 1939 who served in Submarines during World War II and much of his naval career. Later he commanded Destroyers and Missile-Armed Destroyer Units his major command being the TERRIER-Armed Guided Missile Cruiser USS Topeka. Much of his shore duty career involved conceptual planning for new Navy systems as well as operational research involving sea wars of the future and he directed the study effort for the ocean wars in the first General Purpose Forces Studies conducted by the Joint Chiefs of Staff. On retirement in 1967 he joined the Staff of the President's Commission on Ocean Engineering and Research and upon completing his Commission work joined General Dynamics' Corporate Director of Marine Program Development presently serving in General Dynamics' Washington Office as Manager of Warfare Analysis and Energy Programs. His numerous articles in national magazines stress the great changes which he feels we must be aware of if we are to meet the challenge which the missile-dependent Soviet Navy now poses.
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