Customize your VL100
Improve your style
Type your name
As we mentioned earlier, you can type in your name which will appear when yo
he speed range as shown below. The curve shown in bold
is the polar. The stall speed is shown by an S on the left, and the top speed by a T on
the right. In the figure, you can also see three pairs of relative speed readings and
sink rates.
From this graph you can see that
the lowest sink rate corresponds to
the top of the curve, (point A).
Therefore T-Cad.A is our least rate
of sink and VA is the speed at which
we obtain it. Considering that the
glide ratio is the ratio between
horizontal speed and the sink rate
to find the best glide rate on the
graph, we have to draw a line from
the origin of the axes, point O to the
curve.
This line is the graphical representation of the glide because it describes the ratio
between horizontal speed and sink rate. So the point on the curve that gives us the
best glide is the one shown on the tangent of the curve (OB).
The speed to fly at best glide is therefore VB and the glide ratio is VB/T-Cad.B. In
your VL100 you can insert three different polars (parameter 24/32 px-a/b/c) and
choose which one to use (parameter 23 npol). There are three polars preloaded,
(2 hangliders and 1 paraglider), To see the three default polars and calculate your
own, use the Digifly software. Obviously the most effective of a series of any
functions depends on the type of polar selected. We suggest therefore, that you
insert a customized polar which best reflects the real performance of your aircraft.
u
switch on. To do this, connect the Vl100 to the Pc using the interface provided and
choose “set pilot name” from the VLTools software that you can download from
our website www.digifly.com.
The next thing to do is insert the polar data. The polar is simply a graph of your
aircraft’s sink rate over t
Your polar
Pag.6
