???? ??? ??????. ??? ?????? ???????? ??? ????? ??? ????? ?????? ???????? ?????? ????? ???????.  ??? ??????? ?? ??????? ??? ????? ???. ?????? ????? ???? ???? (?????).On a hard and fast-wing plane the wings are rigidly connected into the fuselage, while on a rotorcraft the wings are connected into a rotating vertical shaft. Scaled-down models occas