S.A. Loskutov - Ph.D. (Eng.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: loskutov@bmstu-kaluga.ru D.K. Nikiforov - Ph.D. (Phys.-Math.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: dm_nikif@rambler.ru N.I. Pchelintseva - Ph.D. (Eng.), Associate Professor, Kaluga branch of the Bauman MSTU. E-mail: pchelintseva.n@yandex.ru M.G. Chistyakov - Student, Bauman Moscow State Technical University. E-mail: fn2kf@list.ru