Property List and waypoint navigation

[harryl2021]

I'm new to jsbsim and trying to understand it. I want to know is there a way to list all the properties that jsbsim make use of such as position/lat-rad, position /long-rad etc. Also I want to know if there is no autopilot file for some aircraft then how do I specify waypoints so that the aircraft travels along those waypoints. I tried to copy the C310ap for 737 aircraft(same for script and initialization files of the c310 aircraft by making the changes to use aircraft property element etc. in 737wp_.xml script file). But this is not working as the aircraft is not at all moving from its initial position.

[bcoconni]

Hi @harryl2021 and welcome to JSBSim !

I want to know is there a way to list all the properties that jsbsim make use of such as position/lat-rad, position /long-rad etc.

Sure. If you are using the executable JSBSim.exe, you can specify the --catalog option to the command line interface in your terminal. For example, the command line below will display all the properties of the 737 aircraft:

> JSBSim.exe --aircraft=737 --catalog

If you are using python code, you should use one of the methods query_property_catalog or get_property_catalog. If you are using C++ code then you should use the method JSBSim::FGFDMExec::QueryPropertyCatalog.

I tried to copy the C310ap for 737 aircraft(same for script and initialization files of the c310 aircraft by making the changes to use aircraft property element etc. in 737wp_.xml script file). But this is not working as the aircraft is not at all moving from its initial position.

You must tell JSBSim which initialization file you are using:

Option 1 - Using the command line interface

You can supply the optioninitfile= to JSBSim.exe. For example, you can tell JSBSim to use the initialization file cruise_init.xml with the command line below. Note that, for this command to succeed, the file cruise_init.xml must be located in the same folder than the 737 aircraft.

> JSBSim.exe --aircraft=737 --initfile=cruise_init.xml

Option 2 - Updating the script file

Alternatively you can modify the initfile attribute of the <use> tag in your script file:

jsbsim/scripts/737_cruise.xml

Line 13 in 375f5be

<use aircraft="737" initialize="cruise_init"/>

Here again, the file cruise_init.xml must be located in the same folder than the 737