NK
ClearNav
Manual
•
Version
0.5
•
July
3,
2008
Page
59
of
86
number
to
display
most
of
the
time
as
you
“outsmart”
the
airmass.
Example
Calculation:
As
you
cruise
along
on
this
glide
the
ClearNav
is
logging
the
difference
between
the
current
measured
sink
rate
and
the
theoretical
sink
rate
at
the
current
speed
from
the
polar.
For
example,
for
a
single
reading
if
the
measured
sink
rate
is
250
ft/minute
and
the
polar
gives
a
sink
rate
of
300
ft/min
at
the
current
speed
then
the
netto
value
of
+50
ft/min
is
recorded
for
this
data
point
–
indicating
that
the
airmass
is
rising
at
50
ft/min.
The
many
numbers
logged
during
this
glide
are
averaged
and
the
average
is
displayed.
•
Average
Climb
This
is
the
average
climb
rate
since
take
‐
off
–
or
since
the
start
of
the
task.
The
number
is
automatically
reset
when
the
task
is
started
because
the
data
measured
before
the
start
of
the
task
is
likely
to
be
very
different
from
the
data
measured
after
the
start
of
the
task.
Many
pilots
will
find
that
this
number
is
much
lower
than
their
best
guess
at
their
average
climb
rate.
This
number
is
theoretically
a
great
number
to
use
as
a
recommended
MacCready
setting.
•
Average
Glide
Netto
This
is
the
average
netto
climb
or
sink
achieved
in
all
glides
since
take
‐
off
–
or
since
the
start
of
the
task.
The
number
is
automatically
reset
when
the
task
is
started
because
the
data
measured
before
the
start
of
the
task
(while
trying
for
minimum
sink
rather
than
cross
‐
country
speed)
is
likely
to
be
very
different
from
the
data
measured
after
the
start
of
the
task.
The
term
“netto”
indicates
that
the
sink
rate
at
the
current
speed
from
glider’s
polar
is
added
to
the
raw
vario
number
so
that
the
displayed
number
shows
what
the
airmass
is
doing
rather
than
the
combination
of
airmass
motion
and
glider
sink
rate.
A
value
of
zero
indicates
that
the
glides
have
(on
average)
been
done
in
still
air.
A
positive
value
indicates
that
the
glides
have
been
done
(on
average)
in
rising
air.
A
negative
number
indicates
that
the
glides
have
been
done
(on
average)
in
sinking
air.
Theoretically,
you
will
slow
down
in
lift
and
speed
up
in
sink
and
should
be
able
to
get
a
positive
number
to
display
most
of
the
time
as
you
“outsmart”
the
airmass.
To
access
the
Vario
Display
Options
Window
:
Press
the
Focus
button
once
or
twice
until
the
Numeric
Information
Area
at
the
bottom
of
the
screen
is
in
focus
(not
the
Selection
Box
).
Press
the
Left
and
Right
buttons
to
put
the
focus
on
the
Vario
Window.
Summary of Contents for ClearNav
Page 1: ...NK ClearNav Manual Version 0 5 July 3 2008 Page 1 of 86...
Page 2: ...NK ClearNav Manual Version 0 5 July 3 2008 Page 2 of 86...
Page 14: ...NK ClearNav Manual Version 0 5 July 3 2008 Page 14 of 86...
Page 22: ...NK ClearNav Manual Version 0 5 July 3 2008 Page 22 of 86...
Page 78: ...NK ClearNav Manual Version 0 5 July 3 2008 Page 78 of 86...
Page 86: ...NK ClearNav Manual Version 0 5 July 3 2008 Page 86 of 86...
