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REPUBLIC OF SERBIA MINISTRY OF DEFENCE
MINISTRY OF DEFENCE Material Resources Sector Defensive Technologies Department
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A forced oscillation system for damping derivative measurement in the T-38 Trisonic Wind Tunnel Marija Samardžić Military Technical Institute, Belgrade, majasam@ptt.rs Dragan G. Marinkovski Military Technical Institute, Belgrade, draganski53@gmail.com Dušan S. Ćurčić Military Technical Institute, Belgrade dusan.curcic@vti.vs.rs
Abstract: A forced oscillation system for the measurement of damping derivative due to an aircraft or missile model oscillatory motion in a wind tunnel test section is described. The forced oscillation technique is used for dynamic stability derivatives measurements in the T-38 wind tunnel. Two full-model apparatuses for oscillatory experiments in pitch/yaw and in roll are shown. Oscillatory motion is imparted to the model by hydraulic driving mechanism. Control unit operates directly with hydraulic servo-valve and provides a desired oscillatory motion of the model. Keywords: damping derivative, wind tunnel, oscillatory experiments. |
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