Average Thermal Climb - Brauniger IQ-CLASSIC Bedienungsanleitung

Press briefly
Activates the McCready
Indicator

Average thermal climb

Mc Cready acoustics
vario climb acoustics
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The following glide speed primarily depends on the average
climb in the thermal. This average climb (in m/s ) is also
known as the value of the McCready ring.
In the IQ series, this value appears as an individual active
indicator in the climb section of the analog vario. Its position is
dependent on the polar, on the current descent and on flying
speed. As a result, we also call it
indicator.
If the average climb in the thermal was 2 m/s, continuous
adaptation of your flying speed will keep the McCready
indicator at 2 m/s.
Estimating average climb is often difficult; this is why the
instruments have an additional indicator in the climb-sector of
the analog vario, which is only affected by climbing. This very
steady indicator shows the average climb of the past 10
minutes' climbing. In order to fly at the optimum rate, you
therefore have to fly quickly, making sure that the active
McCready indicator is inline with the average climb indicator
as far as possible; (this is not as easy as it seems.) The main
advantage of this type of McCready ring display is that the
pilot need not touch the vario to fly another McCready value.
Example: A pilot is crossing a valley at a fairly high speed,
trying to keep the McCready indicator over the average climb
indicator at 2.5 m/s. However, he soon realises that he is losing
too much altitude and there is a risk of his not crossing the
ridge on the other side. With other systems, he would now have
to manually set a new value for the McCready ring on the
instrument. With the IQ series, it is only necessary to slow
down until the display is at the desired value (in an extreme
case at indicator position "0" in order to then arrive as high as
possible with the best glide.
The acoustics are also coupled to the active McCready
indicator position. It is therefore unnecessary to always keep an
eye on the indicator - it is enough to adjust your flight when
there are any changes in sound or indicator so that the old
sound can be heard again. The McCready sound consists of
single beeps similar to the climb tone.
an active McCready