ABSTRACT
In order to develop an aeroelastic model of an aircraft wing with continuously distributed mass and elastic properties, it is crucial to analyze its torsional characteristics. In strip theory, the wing span is considered to be infinite with uniform span-wise properties. Lift at any point is assumed to depend only on the down-wash (vertical velocity; normal velocity) at that point and independent of downwash at other points. Sweep is defined as the angle between the axis perpendicular to the oncoming stream (y-axis) and the elastic axis (ӯ-axis). Thus, only swept forward wings can diverge in bending without torsional deformation. Hence, swept forward wings are most susceptible to divergence than swept back wings. This is true when both bending and torsion are present.
