A method is presented for the approximate calculation of the stresses and distortions in a box beam representing the main structural component of a swept wing with a carry-through section and with bulk¬heads perpendicular to the spars. The outer and carry-through sections of such a wing can be analyzed by existing methods if some means is pro¬vided for analyzing the triangular section which connects them. In the method presented the triangular section is divided into free bodies and then equilibrium and continuity are established between these bodies. The result is a system of linear equations which can be solved for the rotations and translations of the three vertical edges of the triangular section.
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