作者：
SUITT, dGIrONA, FDennis Suitt:is a mechanical engineering technician in the Mechanical Transmissions Branch
Propulsion and Auxiliary Systems Department Carderock Division Naval Surface Warfare Center Annapolis Md. Currently Mr. Suitt is the project leader for the Navy's R&D effort to develop the design for a standard family of composite material pumps. Francisco Girona:has been employed as a mechanical engineer in the Pump Branch
Auxiliary Equipment Division Auxiliary Systems Subgroup of the Naval Sea Systems Command since 1989. Currently Mr. Girona is the NavSea project engineer assigned to the development of a standard family of composite pumps. Prior to his employment with the Navy Mr. Girona was employed for 11 years with the Worthington Pump Company as an applications engineer in the General Industry Process and APL Industry and the Marine and Navy Industry Divisions. Mr. Girona graduated from West Virginia University in 1977 with a bachelor of science degree in mechanical engineering.
This paperdiscusses a program to develop a family of standarddesign, low-pressure, composite material centrifugal pumps for Navy surface ship applications. The need for and the benefits derived from the development ...
This paperdiscusses a program to develop a family of standarddesign, low-pressure, composite material centrifugal pumps for Navy surface ship applications. The need for and the benefits derived from the development of this standard family of centrifugal pumps is discussed. Foremost of the projected benerits is a savings of 25% in acquisition and provisioning costs as well as significant reduction in integrated logistic supply costs. Additional benefits detailed are the reduction of maintenance requirements and improvements in serviceability expected from pumps manufactured from composite materials. A program to evaluate commercial composite pumps to determine compliance with Navv design requirements is detailed. The design criteria for the standard family of composite pumps is provided as is the status of a competitively awarded contract for this design. Contained within the discussions of the contract status is a description of efforts to provide state-of-the-art sealing for the new pumps. The paper also addresses the manner in which the standarddesign composite pumps will be introduced to the neet.
作者：
Blatstein, Ira M.Dr. Ira M. Blatstein:has a B.S. in physics from Drexel University and an M.S. and Ph.D. in physics from Catholic University. His exposure to the Navy R&D community began as a coop at the Naval Air Development Center
Warminster Pa. from 1962–1967. In 1967 he joined the then Naval Ordnance Laboratory and spent approximately ten years performing and leading research in underwater explosion effects and explosion acoustics. From 1976 until recently. Dr. Blatstein held various management positions at what had become the Naval Surface Warfare Center (White Oak and Dahlgren)-one of the seven Navy R&D centers. Since this article was written over a year ago NSWC in this article refers to that organization. In January 1992 the old NSWC and a number of other RDT&E engineering and industrial support activities were merged into a new Naval Surface Warfare Center under the Navy consolidation process. Dr. Blatstein is currently the technical director of the new Naval Surface Warfare Center.
An overview of the usefulness of research anddevelopment activities for the Navy is presented. An analogy to Olympic champions is presented. Examples of waterfall charts are presented.
An overview of the usefulness of research anddevelopment activities for the Navy is presented. An analogy to Olympic champions is presented. Examples of waterfall charts are presented.
A variety of low-level radioactive waste streams are being generated from the decontamination anddecommissioning of the former nuclear fuel reprocessing plant at West Valley, New York. It is presently planned to remo...
A variety of low-level radioactive waste streams are being generated from the decontamination anddecommissioning of the former nuclear fuel reprocessing plant at West Valley, New York. It is presently planned to remove the radioactive contaminants from the solutions by ion exchange. Natural zeolites, such as clinoptilolite, erionite, chabazite, and phillipsite, were felt to provide desired flexibility and capacity under varying conditions. Batch and column testing were conducted on these materials using representative waste streams containing radioactive cesium, strontium, and cobalt. Sorption coefficients, dynamic decontamination factors, capacity, and sorption kinetics were determined. In addition, testing was conducted on prepared zeolites (i.e., Linde IE-95 and A-51) to provide comparative data.
An improvedprocess for the manufacture of butanol from corn is described. An improved bacterial strain has made the multistage fermentation process stable, productive, and high yielding. Economic evaluation of the pr...
详细信息
An improvedprocess for the manufacture of butanol from corn is described. An improved bacterial strain has made the multistage fermentation process stable, productive, and high yielding. Economic evaluation of the process and the rhodium catalyst petrochemical process for a 200 MM lb/yr butanol plant is presented.
作者：
COMSTOCK, ENKEANE, rGMr. Edward N. Comstock is currently Head of the Surface Ship Hydrodynamics Section (SEA 32132) of the Hull Form Design
Performance and Stability Branch Naval Sea Systems Command. He received his B.S.E. degree in Naval Architecture and Marine Engineering in 1970 and his M.S. degree in Ship Hydrodynamics in 1974 both from the University of Michigan. Mr. Comstock began his professional career with the U.S. Navy in 1974 as a Seakeeping Specialist in the Hull Form and Fluid Dynamics Branch of the former Naval Ship Engineering Center
being involved in improving the design of naval ships through the integration of R&D technology advances into the ship design process. His efforts prior to 1980 were mainly aimed at developing and establishing Seakeeping Performance Assessment and Design Practices. Other responsibilities have included numerous ship performance investigations in still water and in the sea environment in support of ship design and specific Fleet problems. Prior to his employment by the Navy he worked in the Structural and Hydrodynamic Groups of General Dynamics' Electric Boat Division. There his activities spanned the areas of Submarine structural and Hydrodynamic Design and Construction. A member of ASNE since 1978. he is also a member of ASE and SNAME and has been active in supporting the efforts of the SNAME H-7 (Seakeeping) Panel the National Science Foundation (NSF). and the NATO Naval Armaments Group 6/Sub-Group 5 (Seakeeping). Mr. Robert G. Keane
Jr. is presently Head of the Hull Form Design. Performance and Stability Branch (SEA 3213). Ship Design and Integration Directorate (SEA 03). Naval Sea Systems Command (NAVSEA). He received his B.E.S. degree in Mechanical Engineering from The Johns Hopkins University in 1962. his M.S. degree in Mechanical Engineering from the Stevens Institute of Technology in 1967. and his M.S.E. degree in Naval Architecture from the University of Michigan in 1970. Additionally he has done graduate work in Management Science and Operations Research at The Johns Ho
“Seakeeping … is the ability of our ships to go to sea, and Successfully and safely execute their missions despite adverse environmental factors.” — VAdm. r.E. Adamson. USN In June 1975, VAdm. r.E. Adamson, USN, t...
“Seakeeping … is the ability of our ships to go to sea, and Successfully and safely execute their missions despite adverse environmental factors.” — VAdm. r.E. Adamson. USN In June 1975, VAdm. r.E. Adamson, USN, then Commander Naval Surface Forces, U.S. Atlantic Fleet, addressed the participants of the Seakeeping Workshop [1] and established what has come to be a most profounddefinition of seakeeping as it relates to the U.S. Navy. In those few words he identified the two major issues facing the operator today and provided the focus for all subsequent seakeeping efforts within the design community at the Naval Sea Systems Command (NAVSEA). For it is these two hues of mission sum and safety at sea which are addressed within NAVSEA, for each new ship design and for ships in the Fleet, in terms of: SEAKEEPING PErFOrMANCE — Ability to execute mission in a sea environment, and SEAWOrTHINESS — Ability to survive in an extreme sea environment. In the past, the design of ships exhibiting superior seakeeping performance and seaworthiness and seaworthiness has been looked upon by many as an art or an academic exercise. The objective of this paper then is to demonstrate clearly that the ability of our ships to execute their missions successfully and safely in a sea environment is not by chance but by design.
作者：
HAY, rAHOLTYN, CHMr. Robert A. Hayis currently a Welding Consultant
and prior to his retirement in 1977 was the Director of Welding. Engineering & Technical Services Department. Reynolds Metals Company a position he had held since 1974. He received his formal education in Pennsylvania and New Jersey with additional studies in Welding Metallurgy at the University of California Los Angeles (UCLA). after which he spent seven years at the New York Naval Shipyard where he was a Welding Supervisor in charge of underwater welders (divers) and other specialized welding applications. Subsequent thereto he worked for the Linde Company Division Union Carbide Corporation in the R&D Laboratory on the development of the inert gas-welding processes TIG and MIG and as a Technical Sales Representative. In 1959. he joined the Engineering Services Department Reynolds Metals Company as a Welding Engineer where he specialized in cryogenic applications welder training programs and marine construction and was the Resident Welding Engineer in New Orleans. La. during the construction of the 306-foot all-aluminum Trailer shipSacal Borincano.In 1963 he accepted a position with Aero jet General Von Karman Center Azusa Calif. as a Process Engineer on the development of the aluminum and stainless steel propulsion systems for the APOLLO and ABLESTAR Space Vehicles. during which time he promoted the use of an electron beam welding system and a high strength aluminum alloy to produce the reliability required of the APOLLO Space Unit. Mr. Hay rejoined the Reynolds Metals Company as Chief Welding Engineer where he produced the first high speed technical movie “The Effect of Arc Variation on Aluminum Welds” and also developed the widely used technical comic book “MIG Welding Aluminum”with Pete and Harry which was later translated into the Parsi language for use in the Mideast. A Life Member of the American Welding Society a Past Chairman of the Welding and Joining Committeeand a Past Member of SNAME. he has contributed numerous technical papers
Various thermal practices may be usedduring metal fabrication. Although certain operations are routine for steel, they are not for aluminum. The properties of aluminum are different from those of steel, and the effec...
Various thermal practices may be usedduring metal fabrication. Although certain operations are routine for steel, they are not for aluminum. The properties of aluminum are different from those of steel, and the effect of high temperature on each metal is different. Aluminum does not experience any color change while being heated to the melting point. Temperature control is essential in order to prevent damage, to minimize the loss of mechanical properties, and to safeguard against reduced corrosion resistance. Hot forming and flame straightening can be used effectively to fabricate aluminum provided adjustments are made to the shipyard's routine steel practices. Even with the best procedures the post thermal properties of thick, heavy, aluminum parts may be below the published minimums. Accordingly, parts that are exposed to high temperatures for extended periods of time should be designed with reduced properties in mind. Ship structures must meet prescribed fairness tolerances. distorted aluminum assemblies can be brought within standards through the use of a flame/quench technique. The shipyard's procedures must be approved for Navy work and scrupulously followed by trained crews in order to obtain acceptable results.
暂无评论