User manual

XCSoar User Manual
4.5 Advancing and restarting tasks
At all times one waypoint in the task is designated as the active
waypoint. The active waypoint is used for calculation and display
of navigation information, that is, the pilot is directed to fly to-
wards the active waypoint (also referred to as the ’next waypoint’
in the description of InfoBoxes as in Chapter 10).
During flight a continuous display of the bearing of the next turn
point is shown.
The altitude required to complete the task is calculated from the
glider’s position to the active waypoint through to the final way-
point.
Changing the active waypoint can be performed automatically and
manually in the following ways.
Auto advance mode : Once the aircraft enters the turn point observation zone and
satisfies the turn point rules, the software will automatically
select the next task turn point.
The active waypoint is advanced through the list of way-
points in the task automatically: the start waypoint is ad-
vanced when the starting conditions are met (such as flying
through a start line or leaving a start cylinder); intermediate
waypoints are advanced when the glider passes through the
observation zone (for AAT tasks, the waypoint is advanced
when the glider enters the AAT area).
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