Analysis of the technical possibility of submarine camouflage from direction finding means

Authors

DOI:

https://doi.org/10.15587/2312-8372.2017.101739

Keywords:

aberration, wave coincidence, caustic surface, circumferential waves, bending waves of the shell

Abstract

The submarines studied in this work have an indisputable advantage, consisting in increased concealment, which allows them to concentrate in strategically important areas of the water area with attack means containing a combat unit of various composition and power. Concealment of the submarines significantly increases the danger of hitting critical infrastructures of states of medium and small area, even without their own water area.

Submarines, in addition to the marked advantage, have obvious disadvantages, which include «blindness» and «noisiness». Therefore, when solving tactical and strategic tasks of defense significance, it is necessary to take into account the need to eliminate these disadvantages.

One of the variants of the technical solution is presented for providing the submarine camouflage from the direction finding equipment with the help of hydroacoustic stations – underkeel, drop, towed. An analytical model of the technical effect is constructed to achieve limited visibility of the submarine outside the zone of geometric resonance. The effectiveness degree of submarine camouflage is analyzed in the case of the onset of a resonant situation in the enclosing module - wave coincidence. The preconditions for the onset of resonance are formulated under the condition that a large wave size of the outer shell of the enclosing module is provided. The content of aberration phenomenon irradiated by the outer shell of sound waves into the fluid of the inter-shell space is revealed.

Semi-detailed laboratory studies of the submarine model allow using ultrasonic technologies to ensure the concealment of the submarine in the absence of its own propulsion by means of a two-shell module separated by a liquid and artificially irradiated with ultrasound. At the same time, the theoretical prerequisites for increasing the effectiveness of submarine camouflage using resonant appearance in the form of wave coincidence in a laboratory unit confirms the correctness of the initial technical solutions. This allows to evaluate step-by-step the requirements of high camouflage efficiency:

– large wave size of the shell module;

– creation of caustic zones in the inter-shell space, which acts as a enclosing surface from the direction finding equipment;

– ensuring of the geometric resonance of the outer shell to form its «acoustic transparency»;

– creation of a zone of increased energy in the form of turbulence of the inter-shell liquid.

Author Biographies

Volodimir Karachun, National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Peremohy ave., 37, Kyiv, Ukraine, 03056

Doctor of Technical Sciences, Professor

Department of Biotechnics and Engineering

Viktorij Mel’nick, National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», 37 Prospect Peremogy, Kyiv, Ukraine, 03056

Doctor of Technical Sciences, Professor, Head of Department

Department of Biotechnics and Engineering

Sergii Fesenko, National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Peremohy ave., 37, Kyiv, Ukraine, 03056

Postgraduate Student

Department of Biotechnics and Engineering

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Published

2017-05-30

How to Cite

Karachun, V., Mel’nick, V., & Fesenko, S. (2017). Analysis of the technical possibility of submarine camouflage from direction finding means. Technology Audit and Production Reserves, 3(2(35), 28–33. https://doi.org/10.15587/2312-8372.2017.101739

Issue

Section

Systems and Control Processes: Original Research