Flightplan XML formats
FlightGear use a few different flightplan xml formats stored in property-list xml files. Due to having different needs the flightplans used in the route manager and AI scenarios and have different formats.
AI flightplans
These flightplans contain only waypoints. By tying an AI flightplan to an AI model in a scenario xml file, an AI scenario will be created.
Waypoint tags
Each waypoint can contain the following tags:
Tag | Type | Use | Comment |
---|---|---|---|
<name> | N/A | Waypoint name | The last waypoint use EOF or, if the AI model is to be deleted, END. |
<lat> | N/A | Latitude, decimal degrees | |
<lon> | N/A | Longitude, decimal degrees | |
<alt> | N/A | Altitude above mean sea level, feet | |
<crossat> | N/A | Crossing altitude, feet | |
<ktas> | N/A | True air speed, knots | |
<on-ground> | N/A | Set to true or 1 if on ground
Set to false or 0 if in air or in a tunnel |
|
<gear-down> | N/A | true for gear down
false for gear up |
Or any number between 0 and 1 |
<flaps-down> | N/A | true for flaps down
false for flaps up |
Or any number between 0 and 1 |
Example
<?xml version="1.0"?>
<PropertyList>
<flightplan>
<wpt>
<name>First!</name>
<lat>53.6762</lat>
<lon>-1.39984</lon>
<alt>1000</alt>
<ktas>120</ktas>
<on-ground>false</on-ground>
<gear-down>1<gear-down>
<flaps-down>0.25<flaps-down>
</wpt>
...
<wpt>
<name>END</name>
</wpt>
</flightplan>
</PropertyList>
Route manager flightplans
- See also Route manager#Defining a Route.
Route manager waypoints are a bit more complex, for starters they contain departure and destination information and not just one type of waypoint.
Note that the first and last waypoint are the departure and destination airports.
There is also support for Level-D 767 SID:s and STAR:s in FlightGear.
Departure and destination tags
Tag | Type | Use | Comment |
---|---|---|---|
<airport> | string | The ICAO identifier of the airport | |
<sid> | string | Any available SID | |
<star> | string | Any available STAR | |
<transition> | string | ? #FIXME | |
<runway> | string | Departure or destination runway |
Waypoint types and tags
Tag | Type | Use | Comment |
---|---|---|---|
<type> | string | Type of waypoint. Either runway, navaid or offset-navaid | |
<alt-restrict> | string | ? #FIXME | |
<altitude-ft> | double | Altitude in feet | |
<ident> | string | If <type> is
|
|
<icao> | string | ICAO code of an airport | Used only if <type> is runway |
<lon> | double | Longitude of the waypoint in decimal degrees | |
<lat> | double | Latitude of the waypoint in decimal degrees | |
<radial-deg> | double | True bearing from a navaid, fix or airport | Note Radials on charts are magnetic! |
<distance-nm> | double | Distance from a navaid, fix or airport |
Example
<?xml version="1.0"?>
<PropertyList>
<version type="int">2</version>
<departure>
<airport type="string">KOAK</airport>
<sid type="string">(none)</sid>
<runway type="string">29</runway>
</departure>
<destination>
<airport type="string">KSJC</airport>
<star type="string">(none)</star>
<transition type="string"></transition>
<runway type="string">11</runway>
</destination>
<route>
<wp>
<type type="string">runway</type>
<departure type="bool">true</departure>
<generated type="bool">true</generated>
<ident type="string">29</ident>
<icao type="string">KOAK</icao>
</wp>
<wp n="1">
<type type="string">offset-navaid</type>
<alt-restrict type="string">at</alt-restrict>
<altitude-ft type="double">7500</altitude-ft>
<ident type="string">SFO</ident>
<lon type="double">-122.3738889</lon>
<lat type="double">37.61947222</lat>
<radial-deg type="double">88.22972768</radial-deg>
<distance-nm type="double">16</distance-nm>
</wp>
<wp n="2">
<type type="string">navaid</type>
<alt-restrict type="string">at</alt-restrict>
<altitude-ft type="double">10000</altitude-ft>
<ident type="string">MISON</ident>
<lon type="double">-121.890306</lon>
<lat type="double">37.496806</lat>
</wp>
<wp n="3">
<type type="string">runway</type>
<arrival type="bool">true</arrival>
<generated type="bool">true</generated>
<ident type="string">11</ident>
<icao type="string">KSJC</icao>
</wp>
</route>
</PropertyList>
Using the flightplans in FlightGear
Through the route manager
See Route manager for the main article about this subject. |
For AI models
See AI Systems#AI Models for the main article about this subject. |
Related content
- AI Systems
- UFO from the 'White Project' of the UNESCO
- List of Nasal extension functions#flightplan()
- Nasal Flightplan
- PropertyList XML File
- Howto:Create a flightplan, contains no information whatsoever on using flightplans in FlightGear though.