In this study, we experimentally deal with the tumbling, which is a rotating motion of a plate with its axis perpendicular to the falling direction. As the plate, we consider a rectangular-cross-section prism with a depth-to-width ratio
λ = 0.3, an aspect ratio
AR = 10, and inertia moment ratios
I* = 0.75 - 43, together with a wide range of a non-dimensional control parameter
C = 7.2×10
1 - 1.6×10
3. As a result, we specify fundamental aerodynamic characteristics in terminal condition, like the reduced rotating rate
Ω*, the lift coefficient
CL, the drag coefficient
CD and the lift-to-drag ratio
CL/CD as functions of both
C and
I*. Moreover, the relation between the actual Reynolds number
Re and the Reynolds number
Re(
Vd) based on
Vd can be approximately determined, being independent of
C and
I*. Eventually, we successfully propose a series of empirical formulae to predict
Ω*,
CL,
CD and
CL/CD as functions of
Re(
Vd) alone, which is available for a wide parameter range except for large
C and small
I*.
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