User manual

XCSoar User Manual

The patterns used to display airspace areas include opaque, trans-

parent (hollow) and several hatched and stippled patterns. The

non-opaque patterns are partially transparent with respect to ter-

rain and topology but are not transparent with respect to overlap-

ping airspace. However, where overlapping airspace occurs, all

borders are visible. That is, even though airspace patterns are not

mutually transparent, all airspace borders are drawn on top of the

airspace areas.

Both the display and warning of airspace classes can be individu-

ally enabled or disabled by the user as described in Section 7.7.

The default colouring of Class C, D, E and F airspace is consistent

with ICAO charts.

7.2 Incursion events

Three types of events are detected by XCSoar in relation to SUA:

Predicted incursion : This event is detected when the glider is estimated to be on

a track that will result in entering the airspace at a set time

in the future. The time is the ’airspace warning time’ con-

ﬁguration setting.

The use of a long term average track in these calculations

means that the system can still predict incursion even when

drifting in the wind when circling.

Entering : This event occurs when the glider enters an airspace region.