????? ??? ?? ????? ????????? ????? ???? ???? ??? ?????? ???? ??? ?? ????. ????? ?? ???? ????????? ??? ??? ?????? ???? ????.??? ?? ?????? ?? ??? ??????? ???? ????? ?????? ????? ??????? ????. ??? ???? ????? ?????? ?????? ???? ? ??? ?? ?????? ????? ??? ????? ?? ?????? ? ?? ?? ?? ???? ??????.???? ???? ?? ????? ?? ??? ???? ????? ?? ????? ????????? ?????

????? ??? ???? ???? ???? ?? ???????? ???? ??? ???? ??? ???? ???? ???? ???? ??????? ???? ??????? ???? ?????? ?????.In the event the readily available engine ability amplified during the nineteen twenties and 30s, wings might be built heavy and strong sufficient that bracing was not wanted any more. This sort of unbraced wing known as a cantilever wi