Gurney
flaps
are
now
available
for
all
of
APR's
GTC-series
(200/300/500)
wings.
These
are
super
lightweight,
made
in
carbon
fiber
using
the
pre-pregnated
"dry"
carbon
process,
and
conform
perfectly
to
the
contours
of
the
GTC-series
3D
airfoils.
They
are
easily
attached
using
the
included
double
sided
tape.
The
Gurney
flap
(a.k.a.
wickerbill)
is
an
aerodynamic
device
that
was
originally
pioneered
and
developed
in
the
1970s
by
a
racing
driver
named
Dan
Gurney.
Unbeknownst
to
his
competition,
this
device
was
used
to
increase
downforce
while
minimizing
increase
in
drag.
He
found
that
not
only
did
this
device
increase
the
lift/drag
(L/D)
ratios,
it
also
increased
the
stalling
angles
(so
he
could
operate
the
airfoils
at
greater
pitch
angles).
It
took
a
few
years
for
everyone
else
to
catch
on
to
its
purpose,
and
now,
the
Gurney
flap
(or
similar
device)
can
be
seen
in
race
cars
and
even
airplanes
all
over
the
world.
The
one
main
differences
between
the
two
versions
is
that
version
2
tapers
down
towards
the
outer
edge
of
the
wing
to
fit
the
new
GTC-200
wing
profile.
Features:
-
Made
in
carbon
fiber
-
Perfectly
contours
to
the
GTC-series
3D
airfoils
-
Easily
installed
using
the
included
double
sided
tape
-
Aerodynamic
