S.V. Kozlov1, E.A. Spirina2, E.A. Nemtsev3, A.A. Spirina4

1–4 Kazan National Research Technical University named after A.N. Tupolev – KAI (Kazan, Russia)

1 SVkozlov@kai.ru, 2 EASpirina@kai.ru, 3 Egor.nemtcev.04@mail.ru, 4 Nastya_Sp_05@mail.ru