Role on Moment of Inertia and Vortex Dynamics for a Thin Rotating Plate

Abstract

In this study, we focused on the lift generation with a thinrotating plate. The objective of this study is to understand the appropriateshape and the role of vortex for rotating thin plate. We determined the shapeof the plate through free-flight tests of paper strips and investigated theaerodynamic characteristics of the rotating plate with the selected shape. Therectangular plate with an aspect ratio 7 was relevant from moment of inertiaand bending stress. An endplate on a wing tip increased the stability on thelateral vortex structure behind the rotating plate. Velocity field measurementby Particle Image Velocimetry (PIV) showed that the lift force was generatedtwice in a rotating cycle.