Pilot climb
rate
Airmass climb
rate
Figure 13.8: Buzzer
A practical example of the advantages of the buzzer feature can be illustrated in Figure
13.8
In this example both pilots are sinking at -1.0 m/s. The orange paraglider has a NAV for which
the climbing threshold is set to 0.1 m/s and the Buzzer parameter is set to 3 (0,3 m/s). The green
paraglider has a typical vario for which the climbing threshold is set to 0.1 m/s.
As shown in the figure, when both pilots enter the thermal nothing is heard. The air is rising
at 0.1 m/s but both pilots are descending at -0.9 m/s. In the second zone of the thermal the air is
rising at 0.8 m/s, and so pilots are descending at -0.2 m/s. At this stage the orange pilot starts to
hear the Next to Climb brrrrr sound of his NAV , which helps him to centre the thermal, while the
green pilot is still unaware of the thermal. Finally, in the 3 zone, the air is rising at 1.2 m/s, and
so both pilots climb at 0.2 m/s. The NAV pilot starts to hear his vario beep... beep... sound, it is
only at this point the green pilot hears the first beep from his instrument.
The green pilot may have missed the thermal completely had he found the inner zone or if he
was not watching his friend with the NAV !
50
Содержание NAV
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