Assessment of Straight Tapered Geometry Approximations of Raked-Tip Wings

摘要

Straight tapered geometry approximations to wings with raked tips are presented. Only wings with breaks in the trailing-edge sweep are considered. Comparisons are made with predictions from a vortex-lattice code for a series of uncambered, untwisted wing planforms with raked tips and 10 straight tapered approximations to those planforms. Limited comparisons with experimental data are also shown. Lift-curve slope, aerodynamic center, lateral center of pressure, roll damping and lateral stability are compared for 47 planforms. The most accurate method maintained the area, span, leading-edge sweep, and mean aerodynamic chord of the raked-tip planform, generating a new root and tip chord.