Investigation of a 1/4 Scale Model of the Republic F-105 Airplane in the Langley 19 Foot Pressure Tunnel. Longitudinal Stability and Control and Horizontal-Tail Hinge-Moment and Normal-Force Characteristics of the Model Equipped with a Drooped Supersonic-Type Elliptical Wing-Root Inlet

Low-speed development tests on a 1/4-scale model of the Republic F-105 airplane have been conducted in the Langley 19-foot pressure tunnel.The present paper contains the results of additional longitudinal stability tests and of measurements of the hinge moments and normal force of the all-movable horizontal tail on the model equipped with a supersonictype elliptical wing-root inlet.These tests were made at a Reynolds number of 9-0 X 10-and a Mach number of 0.20.The longitudinal stability characteristics of the model equipped with an all-movable horizontal tail, with and without speed brakes, and with and without various external stores, were determined with the leading-and trailing-edge flaps retracted and extended.The horizontal-tail hinge-moment and normal-force measurements were made at various horizontal stabilizer settings with the leading-edge flaps retracted and extended.In order to expedite the issuance of data for this airplane, no analysis of the data has been presented.