Brauniger IQ-CLASSIC, Operating Instructions Manual

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10
The net-vario is a digital vario
that is activated in setting
mode no. 9.
Polar
It is depicted as a diagram and shows the dependance between
flying speed and the relevant descent.
For the calculation of an exact polar table (descent is
determined to 1 cm precisely for each kmph), it is only
necessary to enter 2 measuring points of the polar. The first
point entered
must be at the speed of lowest descent. (At this
point, the polar is horizontal). Each measuring point consists of
speed and the relevant descent.
The second measuring point is located in the upper speed
range, (but not the maximum speed)
Pol 1 37 kph 1.0 m/s
Pol 2 72 kph 3.6 m/s
Polar flight SP11 with 1 sec. Scan rate shown with PC-Graph 2000
Inputting the two measuring points is done manually in
setting mode no. 6 for Pol 1 and no.
7 for Pol 2. For polar output, please refer to Data transmission to a PC .
Flying the polar should be done on a day free of wind and thermals. With a Competition
instrument, this flight can also be saved; set the scan rate to 1 sec; keep different speeds
constant for several seconds. Transfer the flight to a PC; invoke the “polar” function. By
clicking and holding a mouse button, it is possible to move the curve over the mass of
measuring points. (q.v. figure)
0
Average vario always active
Time constant can be freely selected in setting
mode no. 8 between 1 .... 30 sec.
1
Net vario always active
Time constant as analog vario
2
Automatic switch between net vario when
descending and integrating vario when climbing.
3
Digital display of the glide ratio
(Please refer to the glide ratio section)
net
intg