Polar - LX Navigation Era 57 User Manual

Document Name:
LX Era 57/80 user's manual
TE compensation can be fine-tuned during flight with the following procedure. It is essential that this is only
done in smooth air; it is not possible to tune the TE accurately when there is thermal activity.
Select 100 % TE level.
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- Accelerate up to approximately 160 km/h (75 kts) and keep the speed stable for a few seconds.
Gently reduce the speed to 80 km/h (45 kts).
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Observe the vario indicator during the maneuver. At 160 km/h (75 Knots) the vario will indicate about –2
m/s (-4kts). During the speed reduction, the vario should move towards zero and should never exceed zero
(slightly positive indications are acceptable). If the vario shows a climb, then the compensation is too low,
increase the TE level; and vice versa. Repeat this procedure and make further adjustments if necessary.
SC mode:
Manual: pilot will activate the SC mode with push of an external button. Settings for the SC button
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can be set under SC Switch option.
Speed: SC mode will be automatically activated when the "SC speed" is exceeded.
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Circling: SC mode will be automatically activated when LX Era detects that you have left a thermal,
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and will automatically switch back to vario mode when you enter next thermal.
With the use of external switch, it is possible to switch between SC and vario manually, if manual SC mode is
selected.
SC Switch:
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•
ON means that closing of the switch will cause SC mode.
•
OFF means that closing the switch will select vario mode.
•
Toggle each press of the button will change between SC and vario mode.
SC Speed setting is the speed value at which the SC Mode is activated if SC mode is set to speed.
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SC Silence defines no audio area around zero in SC mode.
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Polar

Nearly all glider polars are stored in the LX Era memory. It is also
possible to create a user defined polar.
Grey fields may not be edited
It is always possible to edit empty weight of the glider.
To create custom polars find "USER" in first line. When "USER" is
selected all polar data will turn to white so the pilot can edit them.
Reference mass is to be used only with user defined polars.
The reference mass represents the mass, at which the input polar
parameters are based.
Version: 0.9H
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