E.A. Spirina1, S.V. Kozlov2, E.A. Ismagilov3

1–3 Kazan National Research Technical University named after A.N. Tupolev – KAI (Kazan, Russia)

1 EASpirina@kai.ru, 2 SVkozlov@kai.ru, 3 emil.ismagilov.00@mail.ru