43rd JAXA Workshops on "Investigation and Control of Boundar-Layer Transition" (October 2-3, 2008) ; 44th JAXA Workshops on "Investigation and Control of Boundar-Layer Transition" (March 26-27, 2009)
抄録(英)
The flag jointed some flat plates by articulations flutters itself in the mean-flow, and it has steady fluttering mode. The fluttering characteristics of this 'multi-articulated flat plate' were investigated experimentally in a wind tunnel. In this paper, the shape of the flat plate is rectangular in several aspect ratios and areas. The results show that the frequency of the fluttering increases with increasing the mean-flow velocity in all shape flat plates. The frequency is large in the large aspect ratio and the small area of the flat plate. Almost all cases show the fluttering mode with node-less flutter. On the other hand, the fluttering mode with node is seen in the shape with low aspect ratio.