A low-speed experimental study of the effects of an oscillatory pitching motion on the flowfield of a chined forebody has been performed.These tests were conducted in the University of Illinois low-speed (0- 240 ft/sec),low-turbulence (<0.1%), 3 by 4 ft, open circuit wind tunnel. The high fidelity, CNC machined aluminum model was sting mounted and oscillated sinusoidally in pitch from 0° to 52° angle of attack without sideslip.The effects of reduced frequency were investigated by running a range of model oscillation frequency at a nominal Reynolds number, based on the 3-inch base diameter of the forebody, of 2.8xl0⁵.The experiments cover a range of oscillation frequencies from 0 to 1 Hz, corresponding to reduced frequencies, based on the 10.5-inch length, of 0 to 0.0137. Surface pressures were measured at all conditions using an array of 91 static pressure taps. Normal force and pitching moment were determined by integrating these data. Surface oil and smoke flow   visualizations were utilized to determine the vortex system and help interpret the surface pressure data. Steady flow visualization revealed the importance of secondary boundary-layer separation on the leeward surface of the chined forebody. This separation was caused by a steep spanwise surface pressure gradient between the chine edge and the suction pressure peak associated with the primary vortex. Surface static pressure data indicated a hysteresis effect in the unsteady flowfield. Leeward surface static suction pressures built-up at lower angles-of-attack in the dynamic upstroke than in the steady case. The opposite was true in the dynamic downstroke. This hysteresis in leeward surface static pressures also resulted in a hysteresis in secondary boundary-layer separation, secondary vortex formation and the integrated forces and moments. These data showed increased lift in the upstroke and decreased lift in the downstroke, with negligible effects on the center-of-pressure.