LX Navigation LX10K User Manual page 58

LX k
Device setup
Vario netto - the actual vertical speed of the surrounding air mass. Is calculated by adding the
current vertical speed indicated by the variometer, and the sink rate of the glider at that speed.
Sink rate of the glider is calculated from the polar.
Vario relative - is Vario netto - . (sub-tracted for . ).
True track - true track based on GPS data.
Task time elapsed - shows elapsed time from starting a task.
Task time left - shows time left on task. Applicable only on AAT tasks.
Current ef ciency - your current glide ratio, calculated by dividing your ground speed by your
vertical speed.
Req. ef ciency - required glide ratio for arriving on set navigation point (includes reserve
altitude).
Thermal max - the maximum variometer value in the last circle ( 6 degree turn). This is the
same value as is represented by white dot on TA page.
Thermal average - average vario calculated as: delta altitude / delta time in circling (same
navbox on TA page - T AVG).
Eff thermal avg. - delta altitude drifted / delta time in circling, where drifted means, it takes
into account drift due to wind.
Thermal gain - shows the accumulated altitude from the start of circling. The GAIN NavBox
shows the difference between current altitude and altitude recorded at the start of circling,
which means this value can also be negative.
Flap position - current ap position. Requires the LX Flap sensor for operation.
Rec. ap position - shows the recommended ap position, as de ned by yourself in the Glider
sub-section.
Device manual
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