> Hi > > While trying to correctly tweak the FDM and PID controllers for the L1011-500, > i though it would be really nice to have some sort of standalone app running > on a remote machine, plotting selected property(es) "oscilloscope style" (in > my case, i'd like to make it run in my old P133).
There is a facility in both JSBSim and FlightGear for piping data through a socket. I am not familiar with the method used by FlightGear. For JSBSim, you can specify a PORT, IP address, as well as select a set of terms to send (for instance, flight control component input/outputs from the control laws as specified using JSBSim FCS components). You can also specify a property to send. Here is the format: <OUTPUT NAME="192.168.0.2" TYPE="SOCKET" PORT="5156"> RATE_IN_HZ 20 SIMULATION ON ATMOSPHERE OFF MASSPROPS OFF AEROSURFACES ON RATES ON VELOCITIES ON FORCES ON MOMENTS ON POSITION ON COEFFICIENTS OFF GROUND_REACTIONS ON FCS ON PROPULSION ON </OUTPUT> Actually, the data sent across a socket is now not configurable, as is writing data to a data file, at this time. It's not that hard to change. You can use the netcat (nc) application under unix/linux/cygwin to test out the socket. > I saw that this is not a new idea, is there anything usable at the moment? > If not, i wouldn't mind to work on it, just point me in the right direction :) > > a little OT: > What other tools might be useful in "debugging" aircrafts? I use another tool I wrote called SimPlot. It's in JSBSIm CVS. It does require you to download the DISLIN plotting library, but it is the quickest dirtiest plotting tool I've seen and perfect for doing fast analysis. You can also set up a plotting "directives" file (XML format) and have SimPlot automatically create a set of plots from a data file created by a previous JSBSim run, and SimPlot will also create an HTML file that interfaces with the auto-generated plots. It makes for a very quick turnaround cycle in debugging, making changes, and seeing the results. This might be a good topic for an article in the upcoming "Back of the Envelope" JSBSim newsletter, which is now about half done. Jon _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
