One of the problems encountered during the design of the ASR‐21 Catamaran is the determination of the effectiveness of the cross‐structure deck plating. In this paper, this problem is examined using the Finite Eleme...
作者：
SMITH, RJMr. R. J. Smith received a B.S. degree in Civil Engineering from the California Institute of Technology in 1945
and was then commissioned and served on active duty with the Civil Engineering Corps of the Navy. In 1951 he obtained a Ph.D. degree in Marine Geology from Princeton University for ONR-sponsored research on the Caribbean island-are project and then continued this research in Central and South America as well as the Caribbean until 1961. At that time he aided in establishing the sea floor soil mechanics test program at the Naval Civil Engineering Laboratory in Port Hueneme and continued in this post until being transferred to the Naval Postgraduate School in Monterey in 1967 to organize an Ocean Engineering curriculum for Naval Officers designated for the general deep submergence field. He has served in numerous operational capacities the most recent as scientific advisor for the H-bomb recovery effort of Palomares. He is currently Professor of Ocean Engineering at the Postgraduate School.
作者：
HELLER, S.R.FIORITI, IVOVASTA, JOHNCaptain Heller
an Engineering Duty Officer of the United States Navy received his undergraduate education at the University of Michigan in Naval Architecture and Marine Engineering and in Mathematics. Following typical shipyard duty during World War II he received postgraduate instruction at the Massachusetts Institute of Technology leading to the degrees of Naval Engineer and Doctor of Science in Naval Architecture. Since then he has had design responsibilities in the Bureau of Ships had a maintenance assignment with the Fleet directed structural research at the David Taylor Model Basin engaged in submarine design and construction at Portsmouth Naval Shipyard and is now Head of Hull Design in the Bureau of Ships. Captain Heller is a member of ASNE SNAME Tau Beta Pi and Sigma Xi. Mr. Fioriti is the Materials Engineer in the Hull Scientific and Research Section
Bureau of Ships with responsibility for materials and fabrication processes that are used in the construction of ship hulls. Mr. Fioriti attended the University of Pittsburgh receiving the Bachelor of Science degree in Metallurgical Engineering in 1951. He took postgraduate work at the University of Maryland receiving the Master of Science degree in 1960. From 1951 to 1956 he worked in the Metals and Metallurgy Section of the Bureau of Ships where he planned and administered research programs on metals for ships. He was associated intimately with the development of HY-80 steel and prepared the first specification used for its procurement by the Navy. In addition he was responsible for the development of dimpled armor plate for aircraft carrier flight decks. In 1956 he assumed his present position where he has been active in the Ship Structure Committee research program the low cycle fatigue structural program and the hydrofoil materials research program. Mr. Vasta is Head of Hull Scientific and Research Section
Bureau of Ships with the responsibility for planning initiating and technically monitoring research in the fields of structural me
作者：
Fioriti, I.Vasta, J.Starr, A.Mr. Fioriti is the Materials Engineer in the Hull Scientific and Research Section
Bureau of Ships with responsibility for materials and fabrication processes that are used in the construction of ship hulls. Mr. Fioriti attended the University of Pittsburgh receiving the Bachelor of Science degree in Metallurgical Engineering in 1951. He took postgraduate work at the University of Maryland receiving the Master of Science degree in 1960. From 1951 to 1956 he worked in the Metals and Metallurgy Section of the Bureau of Ships where he planned and administered research programs on metals for ships. He was associated intimately with the development of HY-80 steel and prepared the first specification used for its procurement by the Navy. In addition he was responsible for the development of dimpled armor plate for aircraft carrier flight decks. In 1956 he assumed his present position where he has been active in the Ship Structure Committee research program the low cycle fatigue structural program and the hydrofoil materials research program. Mr. Vasta is the Head of Hull Scientific and Research Section
Bureau of Ships with responsibility for planning initiating and technically monitoring research in the fields of structural mechanics and hydromechanics. Mr. Vasta attended New York University receiving the Bachelor of Science degree in Mechanical Engineering in 1930. He took postgraduate work at the Massachusetts Institute of Technology receiving the Master of Science degree in 1931. From 1931 to 1938 he worked at the United States Experimental Model Basin in the structural mechanics group. After a short duty at the Headquarters of the United States Coast Guard he joined in 1939 the staff of the United States Maritime Commission where he held various positions of responsibility in the Technical Division. He was associated intimately with the design development of the reinforced concrete ship program first as Assistant Chief and then as the Chief of the Section. Thereafter he was appointed Assistant Chief of
Research program of U S Bureau of Ships is in final phase;literature survey and screening phases are completed;on basis of tests, fabrication studies and cost analyses most promising materials are steels 4330M and 17-...
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Research program of U S Bureau of Ships is in final phase;literature survey and screening phases are completed;on basis of tests, fabrication studies and cost analyses most promising materials are steels 4330M and 17-4PH (H1025) with protective coatings, and 2 titanium alloys (8AL-2CB-1TA) and (6AL-4V);most promising coatings are polyurethane rubber and neoprene rubber base coatings;coated HY-100 steel is satisfactory for low performance foils;glass laminates are of particular interest as foil materials and are under study;no "off shelf" material is ideal for high speed foils.
作者：
Vasta, J.Pohler, C.Becker, H.Winter, R.Mr. Vasta is Head of Hull Structures Branch
Naval Ship Engineering Center of the Dept. of the Navy with the responsibility for hull structural design of surface ships and submarines and for planning initiating and technically monitoring research in the field of structural mechanics. Mr. Vasta attended New York University receiving the Bachelor of Science degree in Mechanical Engineering in 1930 and took postgraduate work at the Massachusetts Institute of Technology receiving the Master of Science degree in 1931. He worked in the Structural Mechanics Group of the U. S. Experimental Model Basin from 1931 to 1938. After a short duty at the Headquarters of the U. S. Coast Guard he joined the U. S. Maritime Commission where between 1939 and 1948 he held various positions of responsibility in the Technical Division. Subsequently he joined the former Bureau of Ships first as Head of the Scientific and Research Section from 1948 to 1964 and later as Assistant Chief Naval Architect for Engineering Sciences in the Naval Ship Engineering Center from 1965 to 1966. Mr. Vasta is a member of the Society of Naval Architects and Marine Engineering and of the American Welding Society and is active in many research panels and committees including the Ship Structure Committee and panels in the Welding Research Council. He is chairman of the Hull Structures Committee of the Society of Naval Architects and chairman of the “Fatigue” panel of the International Ship Structure Congress. Mr. Pohler is Head of the Submarine Structural Mechanics Unit
Hull Structures Branch of the Naval Ship Engineering Center with responsibility principally for technical direction of the Navy's submarine structural research program and for development of design criteria for submarine hulls. Mr. Pohler attended the University of Houston receiving the Bachelor of Science degree in Architectural Engineering in 1956 took postgraduate work at the University of California receiving the Master of Engineering degree in Naval Architecture in 1959. He wor
Report of study on stresses in hatches, windows, and adjacent regions in penetrated spheres under external pressure for use in deep submergence structures, using three-dimensional photoelasticity;stress distributions ...
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Report of study on stresses in hatches, windows, and adjacent regions in penetrated spheres under external pressure for use in deep submergence structures, using three-dimensional photoelasticity;stress distributions from conical hatches and windows are compared with available results obtained from testing of models and prototype bathyspheres, and conclusions are developed relating to strength and design of hatches and windows;results obtained from pressurizing small conical windows under constant long-term loading, as preliminary index of tendency of plexiglas windows to creep in service, are included.
作者：
PRITZLAFF, J.A.LANIEWSKI, J.P.John A. Pritzlaff attended Northwestern University under the regular NROTC program. After graduation
in 1951 he served on board the USS CHARLES J. BADGER (DD657). He obtained his master's degree in Mechanical Engineering at Northwestern in 1955. Since that time he has been working at the General Electric Advanced Technology Laboratories in Schenectady New York. He has been active in the fields of hydraulics pneumatics optics mechanics and underwater component and system design. He developed an optical-mechanical portion of the Polaris fire control system. His underwater activities have included sonobuoy evaluations testing of space vehicle recovery equipment and direction of the buoy development work discussed in this paper. He has written several technical papers published by the Society of Automotive Engineers Design News Machine Design and the American Society of Naval Engineers. He is a member of the American Society of Mechanical Engineers the American Society of Naval Engineers and the Marine Technology Society. He is a Lieutenant in the Naval Reserve and is a licensed Professional Engineer in the States of Illinois and New York.
作者：
HANSEN, O. RICHARDUHLER, DALE G.O. Richard Hansen obtained a BSCE from Colorado State University in 1950 and has participated in continuing educational courses at the University of Washington
Wayne State University and the University of Michigan. He was employed at Puget Sound Naval Shipyard for five years as a Mechanical Engineer and Project leader in industrial gases and cryogenic O2. Producers for Shipboard Applications followed by seven years at Chrysler Corporation initially as a project engineer in the FBM program subsequently assigned to Mechanical Laboratory achieving Managing Engineer status of a department therein which contained the facilities group instrumentation group and an experimental machine shop. This was followed by employment at Westinghouse Astronuclear Laboratories as a senior engineer conducting studies in two phase liquid hydrogen flow in simulated NERVA cores. Following this he served two years of employment with the Lockheed Georgia Company conducting material studies in combined nuclear cryogenic environments at the NASA 60 megawatt test reactor located in Sandusky Ohio. Joined NAVSEC in 1966 as a mechanical engineer in the compressed air systems group and has been assigned to the Supervisor of Diving Salvage and Ocean Engineering conducting analysis and evaluation of compressed air and gas systems associated with diving and salvage operations. Dale G. Uhler received BSCE degree from Carnegie Institute of Technology in 1964. He spent two years as a construction engineer before entering graduate school at the University of Miami
Florida where he received his MS degree in applied mechanics with a minor in Ocean Engineering in 1968. He is now employed as an Ocean Engineer in the office of the U. S. Navy Director of Diving Salvage and Ocean Engineering where he is the project manager for the Large Object Salvage System and related development programs and concurrently working toward his Ph. D. at Catholic University.
The advent of deep ocean technology has created a need of buoyancy at ever increasing depths. This paper concerns itself with two most widely used techniques for dewatering/deballasting, compressed air supplied by sur...
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