V.N. Nikolaev - Dr. Sc. (Eng.), Professor, Southwest State University (Kursk). E-mail: nikovic54@yandex.ru K.S. Degtyarev - Post-graduate Student, Southwest State University (Kursk) E-mail: degtjarev1@rambler.ru O.G. Diev - Ph. D. (Eng.), Associate Professor, Southwest State University (Kursk). E-mail: oleg-diev@yandex.ru E.N. Ivanova - Ph. D. (Eng.), Southwest State University (Kursk). E-mail: sergeyd12@gmail.com