Tests in the Ames 40- by 80-foot Wind Tunnel of an Airplane Configuration with a Variable-incidence Triangular Wing and an All-movable Horizontal Tail

Report presenting an investigation to determine the low-speed, large-scale characteristics of an airplane configuration with an aspect ratio 2 triangular wing of variable incidence. The model consisted of the variable-incidence wing in combination with a fuselage of fineness ratio 13, a triangular vertical tail, and a thin, unswept, all-movable horizontal tail. Results regarding the lift characteristics of the model with the tail off, longitudinal stability with the horizontal tail on, trim lift and drag characteristics, and directional instability are provided.