An Approximate Analysis of the Influence of Aerodynamic Heating and Initial Twist on the Torsional Stiffness of Thin Wings

Abstract

In the present paper, approximate formulas are derived, based on the “fiber-stress” concept, for the combined influence of aerodynamic heating and initial twist on the torsional stiffness of a thin wing. Criteria are established for calculating the critical temperature difference between that of the edges and that of the mid-chord position, for preventing possible aeroelastic reversals or buckling. Formulas are valid for wings with large aspect ratios.