O.N. Skrypnik 1, E.E. Nechaev 2, R.O. Arefev 3, N.G. Arefeva 4

1 Belarusian State Aviation Academy

2 Moscow State Technical University of Civil Aviation (Moscow, Russia)

3,4 Irkutsk Branch of the Moscow State Technical University of Civil Aviation (Irkutsk, Russia)

1 skripnikon@yandex.ru; 2 eenetchaev@mail.ru; 3 seven7772009@yandex.ru