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Fig. 11. Schematic, not to scale, for evaluating the drag force and torque acting on
a medial or lateral mechanoreceptor sensillum contained in a plane passing
through the flagellum axis and oriented at an angle
with respect to the
local tangent to the flagellum surface. The velocity component,
Ux(y), inducing the drag and torque is normal to
the plane of the figure and, at any location
along the sensillum,
Uns(
)=Ux(y) where
y=
sin
.