ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)

vol 66 / November, 2023
UDC 531.746:531.3:534.833


Y. . Binder
ITMO University; Associate professor

V. M. Musalimov
Institute of Problems of Machine Science of the Russian Academy of Sciences, St. Petersburg; Chief Scientific Officer

P. . Sergushin
Saint Petersburg Branch Organization of the Russian Academy of Sciences “Institute of Earth Magnetism, Ionosphere and Radio waves named after N.V. Pushkov RAS”; Junior scientific researcher

D. A. Sokolov
Special Design Office for Underground Navigation Instruments, Closed JSC, St. Petersburg; Design Engineer

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Abstract. For a down-hole inclinometer, dynamic processes taking place during the instrument foundering are investigated. Governing equations for dynamics of helical-anisotropic body are employed. The torque vibrations are damped with the use of special vanes. The hydrodynamic resistance is estimated on the base of Navier— Stokes equations. Experimental and theoretical data are compared.
Keywords: down-hole instrument, gyroscopic inclinometer, helical anisotropy, axial-torque vibration, Navier — Stokes equations, vibration damping.