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Preflight Settings - Common

Common

This is where you enter various common preflight data.

Arrival Altitude
The arrival altitude is your chosen safety (reserve) altitude above the terrain altitude of your goal when on final glide. In calculating the final glide parameters, the value entered here is added to the elevation of the selected target. For many situations, the default value of 200 metres would be sensible. The units used for this value are set in Settings/Units.

Arrival Altitude Display
The arrival altitude display selection is only active, if a flight task and a glider are setup. The arrival altitude is calculated above the selected target. Tow different display targets can be selected.


QNH
The area QNH (as given by ATC) is entered in hPa (hectopascal). It is only used in calculation of the vertical warning distance to airspace boundaries expressed as flight levels. The default value is 1013 hPa.

Autostart logging
If you activate this check box, Cumulus automatically starts the IGC logging when you start to move faster than 35 km/h. The current logger status is signaled by a variously-coloured field in the status bar. After landing the flight is closed, if 90s no moving could be detected. If the GPS signal breaks down, the same condition is applied.

Logbook
If Autostart logging is enabled, Cumulus records the basic data of your flight into a logbook. Pressing the button Logbook opens a window, where all flight logs are listed. If you want you can remove selected or all entries. The Logbook is a pure ASCII data file in a CSV format. Semicolon is used as separator.

B-Record Interval
Interval for logging of the IGC B-Record. Default time is 10 seconds. Note that shorter times will increase the log file size and the processor load.

K-Record Interval
Interval for logging of the IGC K-Record. Default is None, i.e., switched off. If you enter a valid time, the following additional items are logged, if they are available. Otherwise default values are used.

Note that the activation of this option will increase the log file size and the processor load.
It should be noted that the Cumulus IGC logger does not fulfill in all respects the IGC requirements for glider flight documentation. There is no security G-Record written into the log file, because the PDA device cannot be secured against external manipulation. Furthermore, there are not always pressure altitude values available, as required by the IGC. For more information about the FAI IGC requirements, including the IGC logger formats, see here.

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