Book Description

An investigation was made by the NACA wing-flow method to determine the longitudinal stability and control characteristics at transonic speeds of a semispan airplane model having a wing of conventional plan form and a horizontal tail swept back 45 degrees. The wing and tail had NACA 65-series airfoil sections with thicknesses of 10 and 8 percent chord, respectively. The model was mounted in such a way as to permit it to assume a position of zero pitching moment about a center of gravity at 27 percent of the mean aerodynamic chord. Measurements were made of lift and angle of attack for trim for several stabilizer and elevator settings.