On the left C-Pilot EVO shows the curve. The polar curve is defined by three pairs of values
(horizontal speed and vertical speed) and by the stall speed.
Horizontal speed and vertical speed pairs can be entered by using the buttons on the right,
organised in three columns by three rows. The columns, starting from the left, allow you to enter the
horizontal speeds Vx (with respect to the air), the vertical speed Vz (sink rate), and the glide ratio
g.r. Note that these three quantities are not independent: when, for example, you change Vx or Vz,
the glide ratio will change accordingly.
Some important parameters of your wing will be calculated depending on your polar:
- The minimum sink rate (Vz min) and the corresponding horizontal speed (@ xx km/h);
- The maximum glide ratio and the corresponding horizontal speed (@ xx km/h).
From now on, C-Pilot EVO will use your new polar for all the navigation calculations. Note that the
stall speed and the maximum speed are used by C-Pilot EVO to calculate the wind speed when you
turn more than 270°. The calculation of the wind is quite precise even if these two values are not
known precisely.
We recommend tuning your polar step by step, depending on your observations during real flights.
For example, if you happen to arrive at turnpoints consistently lower that what C-Pilot EVO
calculates, this probably means that the polar entered is too optimistic.
By means of the “polar menu” you can load previously stored polars from the “polars” folder in the
USB memory. With the same approach used for displays and audio configurations, you can rename
the current polar or discard the last changes.
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