E.N. Efimov - Post-graduate Student, Department 405, Moscow Aviation Institute (MAI). E-mail: omegatype@gmail.com D.V. Filimonova - Student, Department 405, Moscow Aviation Institute (MAI). E-mail: daria-fili@rambler.ru T.Y. Shevgunov - Ph. D. (Eng.), Associate Professor, Department 405, Moscow Aviation Institute (MAI). E-mail: shevgunov@mai-trt.ru