Robert Burns wrote: > Hello, > > We are considering using FlightGear for a research project at our > university. I have a question about a network FDM's ability to > interface with FlightGear's scenery. > > Specifically, is it possible for a network FDM to determine if a > collision has occurred between the aircraft geometry in FlightGear and > the actual terrain? If so, does the mechanism provide specific > information about the collision ( i.e., landing gear, wing, nose, > etc.)? Where could I find the source that facilitates this mechanism?
Hi Robert, Can you describe a little more about how you plan to set up your simulation? A common arrangement is to have your own flight dynamics running as an external software application (i.e. matlab/simulink, etc.) and then use the net_fdm structure to send aircraft location, attitude, control surface deflection, etc. to FlightGear for rendering the visual representation of what is going on. Most people stop there since that is pretty quick and easy to set up. However, FlightGear also has a net_ctrls packet which is designed to send information from FG back to your flight dynamics application. This would allow you to handle all your joystick and other flight/engine control inputs via Flightgear and pass them through to your dynamics code. In addition, this structure will send over local ground elevation and wind speed/dir. Of course you can choose to use or ignore any or all of that data. With this mechanism, your own flight dynamics code can do the check for ground collision, your gear modeling code will know the local ground elevation (which can change as you taxi) and you can test yourself for a crash condition. Does that help? Thanks, Curt. -- Curtis Olson http://baron.flightgear.org/~curt HumanFIRST Program http://www.humanfirst.umn.edu/ FlightGear Project http://www.flightgear.org Unique text: 2f585eeea02e2c79d7b1d8c4963bae2d ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
