Abstract
Wind tunnel test and computational fluid dynamics have been used for the aerodynamics design of the aircraft. Especially, in the case of wind tunnel test, the scale model which has various sensors inside has been installed in the wind tunnel, and 6 component force and moment, surface pressure and hinge moment of the control surface have been measured in the wind tunnel test. It is indispensable for the aerodynamics design to understand the flow phenomenon around the aircraft correctly. Therefore, the flow visualization techniques have been utilized in the aircraft development wind tunnel test since a long time ago. This paper summarizes the typical examples of traditional and latest flow visualization techniques in the aircraft development wind tunnel test. Also, the expected flow visualization technique in the future is described in this paper.
