Wind-tunnel study of the effects of propeller operation and flap deflection on the pitching moments and elevator hinge moments of a single-engine pursuit-type airplane

Report presenting testing of a mock-up of a pursuit airplane in the full-scale wind tunnel and the effects of propeller operation and flap deflection on the aerodynamic characteristics of the wing-fuselage combination and of the horizontal tail. The results indicate that with the flap deflected, the propeller-operating conditions cannot be directly determined from the propeller-removed lift coefficient.