Theoretical Estimation of the Transonic Aerodynamic Characteristics of a Supercritical-Wing Transport Model with Trailing-Edge Controls

Book excerpt: A method for rapidly estimating the overall forces and moments at supercritical speeds, below drag divergence, of transport configurations with supercritical wings is presented. The method was also used for estimating the rolling moments due to the deflection of wing trailing-edge controls. This analysis was based on a vortex-lattice technique modified to approximate the effects of wing thickness and boundary-layer induced camber. Comparisons between the results of this method and experiment indicate reasonably good correlation of the lift, pitching moment, and rolling moment. The method required much less storage and run time to compute solutions over an angle-of-attack range than presently available transonic nonlinear methods require for a single angle-of-attack solution. Luckring, J. M. and Mann, M. J. Langley Research Center NASA-TP-1253, L-11257 RTOP 505-11-16-07...