EXPERIMENTS AND ANALYSIS FOR A GUST GENERATOR IN A WIND-TUNNEL

An experimental investigation was made of the gust field generated by a rotating slotted cylinder installed in the Duke University low-speed , closed-circuit wind tunnel. The system has a very simple configurati on with low cost and can produce a controllable single or multiple har monic gust wave in the lateral and longitudinal directions. It require s minimal power and torque input. A simplified theoretical aerodynamic model and a design estimation of the lateral and longitudinal gust fl owfield is also proposed in this article. The design estimate is based on a two-dimensional dynamic lift coefficient that is given by the th eoretical and experimental results. An interfering wake vortex effect is the major disadvantage of this system.