TITLE:
Role on Moment of Inertia and Vortex Dynamics for a Thin Rotating Plate
AUTHORS:
Yoshihiro Kubota, Osamu Mochizuki
KEYWORDS:
Autorotation; Thin Rotating Plate; Free Flight; Moment of Inertia; Visualization; PIV
JOURNAL NAME:
World Journal of Mechanics,
Vol.3 No.6,
September
12,
2013
ABSTRACT: In this study, we focused on the lift generation with a thin
rotating plate. The objective of this study is to understand the appropriate
shape and the role of vortex for rotating thin plate. We determined the shape
of the plate through free-flight tests of paper strips and investigated the
aerodynamic characteristics of the rotating plate with the selected shape. The
rectangular plate with an aspect ratio 7 was relevant from moment of inertia
and bending stress. An endplate on a wing tip increased the stability on the
lateral vortex structure behind the rotating plate. Velocity field measurement
by Particle Image Velocimetry (PIV) showed that the lift force was generated
twice in a rotating cycle.