SUDOSTROENIE 5'1999 (726) September-October
SUDOSTROENIE 5'1999 (726) September-October
CONTENTS
AT THE SHIPYARDS
SHIP DESIGN
Bilen B., Zheryal M., Bilen-Katic B., Laiich Z., Marinkovich M., Yankovich Z. A new approach to the design of pusher-tugs
It is proposed to replace on Danube pusher-tugs their propulsion systems with conventional rudders to new propulsion systems with three screws, one of which is a conventional middle screw and two other side screws are azimuth thrusters. This will result in a new type of pusher-tugs with shorter length, reduced crew and higher manoeuvring and propulsive qualities.
Shelangevich T. Movement and motions of a ship with anchor positioning system
The author offers a method of calculating quasi-static movements of floating structures with anchor positioning system.
Shitov A.I. Analytical method of calculation of bearing capacity of shells for underwater technical facilities
The author offers a newly developed method of calculating critical stresses in shells for underwater technical facilities. The method is based on the assumption of steady stress upon reaching ductility in an ideally elastic-plastic material and a constant ratio of elastic and plastic strain components. Examples are given for calculation of critical stresses in various structures.
NAVAL SHIPBUILDING
Nikiforov B.V. Evolution of electric propulsion systems for submarines
The paper presents an analysis of the development of various types of electric propulsion systems for submarines. The author presents results of expert evaluations of quality parameters of controlled electric drives and compares their characteristics such as power, weight and dimensions. It is pointed out that the valve actuator with permanent magnets and the reactive inductor drive will find an ever increasing application in shipbuilding.
Khudyakov L.Yu. The "Virginia" - instead or together with the "Seawolf"?
The paper comments the article by G.Svyatov published in U.S. Naval Institute Proceedings in 1998. The article considers the advisability of keeping the "Seawolf" type nuclear submarine, parallel with the "Virginia", in the ship construction program and the need of further developing the program of SSN-6881submarines.
SHIPBOARD POWER PLANTS
Dolgov V.N. Outlook for the development of underground nuclear power stations based on shipbuilding technologies
The author considers principles of developing a safe and cost-effective underground nuclear power station based on shipboard nuclear powerplants. It is pointed out that the most suitable for underground nuclear power stations are nuclear-propulsion plants with fast-neutron reactors cooled with lead-bismuth liquid-metal coolant of monoblock construction.
Plotnikov Yu.I. Computer-aided multipurpose system for visual supervision of marine powerplant technical facilities
The author deals with problems of software and hardware support for visual supervision of marine power generating plants. Methods are evaluated to improve metrological, engineering and economic efficiency of visual supervision based on computer-aided video and infra-red imaging systems.
HULL GEAR AND AUXILIARIES
Startsev S.B., Startsev B.A. Optimum conditions of air exchange in enclosed ship spaces
Investigation results of a calculation model are presented for various conditions of air exchange in ventilation of a ship compartment. An air exchange efficiency is determined for an enclosed ship space of random geometry. A calculation program is given to determine optimum ventilation modes. Straub's technique of pipe joints
MARINE INSTRUMENTS
Petrov G.P., Kozlovsky K. L., Togatov D.V., Petrov A.I. Pulsed power sources for shipboard automation and computer systems
The authors consider potential fields of application of pulsed power sources in automation circuits of ship systems and computer complexes. The use of pulsed power sources in shipboard electronic systems is justified.
Vysotsky V.I., Ivanenko N.S., Korovichev B.K., Nikiforov E.M. Determination of elastic and damping characteristics of floating wire used in modern communications systems
Damping characteristics of a floating wire having specific geometry and mechanical properties have been determined experimentally and a reduced Young's modulus has been selected for evaluation of noise in floating wire under the conditions of high-frequency vibration in liquids.
SHIPBUILDING TECHNOLOGY
Gavrilyuk L.P. Determination of certified rigidity of submarine hull under repair afloat
A procedure is proposed for determination of a criterion of submarine hull rigidity variation to allow removal of replaceable shell plates. The procedure is based on measuring a submarine hull elastic line and processing the resultant data on a personal computer.
Ilyin A.V., Leonov V.P., Khvalynsky V.N. Evaluation of the effect of residual stresses resulting from assembly and welding of erection joints on cyclic strength of hull structures
The authors offer alternative methods of assembly and welding of erection joints of hull structures with quantitative evaluation of distribution patterns of post-weld residual stresses. Based on application of various versions of assembly and welding sequence of plating butts and transverse framing, an evaluation of cyclic strength of welded joints of hull structures has been made and a more profitable technique chosen.
INFORMATION SECTION
Romanov A. V. 50 years of Zelenodolsky Design Bureau. The issues of Russian Shipbuilding Agency. The Russian Merchant Fleet Revival Program will be prolonged up to 2005. Chanturia N. Three blows of the Government which destroyed Ukrainian shipbuilding. Frigate "Shtandart", a dream that has come true. News from aboard. Nikolay Iosifovich Kvasha is 70 years old.
HISTORY OF SHIPBUILDING
Chernikov I.I Heavy gunboats of the Dnieper naval flotilla
Biryuk V.S. Ship repair in the Black Sea during Great Patriotic War
Balabin V.V., Volkov A.V. Scientists of Russian school of applied mechanics in emigration: G.N. Pio-Ulsky
