FUTABA FX40 - Winglet

103
<Model Menu (Airplane/Glider Functions)>
RUDDER 1
Winglet
at Flying wing
( )
RUDDER 2
Winglet
at Flying wing
( )
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Thi
s funct
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usts t
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W
inglets are used to improve the efficiency o
f
ai
rcraft
l
ower
i
ng t
h
e
li
ft-
i
n
d
uce
d
d
rag cause
d
b
y
wi
n
g
t
i
p vort
i
ces. T
h
e w
i
n
gl
et
i
s a vert
i
ca
l
or an
gl
e
d
extension at the tips of each wing
.
W
i
ng
l
ets wor
k
b
y
i
ncreas
i
ng t
h
e effect
i
ve aspect
r
at
i
o w
i
n
g
w
i
t
h
out a
ddi
n
g
g
reat
ly
to t
h
e structura
l
stress and hence necessar
y
wei
g
ht of its structure
-
an extens
i
on of w
i
ng span wou
ld
a
l
so perm
i
t
l
ower
i
n
g
of
i
n
d
uce
d
d
ra
g
, t
h
ou
gh
i
t wou
ld
cause
p
arasitic dra
g
and would require boostin
g
the
strengt
h
of t
h
e w
i
ng an
d
h
ence
i
ts we
i
g
h
t - t
h
ere
w
ou
ld
come a po
i
nt at w
hi
c
h
no overa
ll
usefu
l
savin
g
would be made. A win
g
let helps to solve this
b
y effect
i
ve
l
y
i
ncreas
i
ng t
h
e aspect rat
i
o w
i
t
h
out
a
ddin
g
to the span of the win
g.
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i
nd
i
v
i
duall
y
set
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pt
i
on
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b
ac
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l
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