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Published online by Cambridge University Press: 28 July 2016
The distortion of straight wings is simple and familiar; upward bending causes slight changes in dihedral angle and loads offset either fore or aft of the flexural axis cause twisting, which involves changes in incidence. When wings are heavily swept back, bending causes change of incidence as well as change of dihedral angle, while the changes of incidence due to twisting are no longer equal to the angles through which the wing structure twists.