LX Navigation LX10K, Руководство пользователя

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LX 10k
Advanced operation
Document name:
LX 10KUM
Document revision:
R1
IGC altitude -
altitude displayed by the internal IGC pressure sensor, which is not offset by
QNH changes.
Density altitude -
the density altitude is the altitude relative to standard atmospheric conditions
at which the air density would be equal to the indicated air density at the place of observation.
GPS altitude -
altitude displayed by the internal GPS module.
Height AGL -
height above ground level = Actual altitude minus ground elevation.
Elevation -
elevation of the ground above the mean sea level.
Vario AVG -
average vario calculated by integration according to given settings (the same
navbox is shown also on
Thermal assistant page
- AVG).
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 minus 0.7 [m/s] (subtracted for 0.7).
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 efficiency -
your current glide ratio, calculated by dividing your ground speed by your
vertical speed.
Req. efficiency -
required glide ratio for arriving on set navigation point (includes reserve
altitude).
Thermal max -
the maximum variometer value in the last circle (360 degree turn). This is the
same value as is represented by white dot on TA page.
Thermal average -
average vario calculated as:
∆( altitude ) / ∆( time in circling )
(same
navbox on TA page - T AVG).
Eff thermal avg. -
∆( altitude drif ted ) / ∆( 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.
Device manual Public 23