????? ??? ???? ???? ???? ?? ???????? ???? ??? ???? ??? ???? ???? ???? ???? ??????? ???? ??????? ???? ?????? ?????.???? ???? ???? ??? ????? ???????? ??????? ????? ??????? ??? ????? ??????? ???????? ??????? ??????? ??? ?????? ???? ???????? ???? ??????.On a hard and fast-wing plane the wings are rigidly connected towards the fuselage, whilst on a roto