????? ??? ???? ???? ???? ?? ???????? ???? ??? ???? ??? ???? ???? ???? ???? ??????? ???? ??????? ???? ?????? ?????.??? ??? ????? ?? ???????? ?? ??? ?? ??? ???? ????? ???? ???? ?????? ?????Through this method, the targets and style specs on the aircraft are recognized. Initially the development company employs drawings and equations, simulations, win