On Wed 17 January 2007 20:48, Berndt, Jon S wrote: >Dave Culp and I have been discussing the > catapult and hook scheme for a while. That discussion has actually gone > farther than that specific case, to planning for a capability that is a > general one, for applying external forces to a JSBSim aircraft. It could > also be used internally by JSBSim for modeling such things as a > parachute.</FONT></P> >The idea would be to provide a means to define > an attachment point for a JSBSIm aircraft, at which an external force would > be applied. That would be on the aircraft definition side. On the > runtime/FlightGear side, a force magnitude and direction would need to be > applied to the previously defined attachment point. >This capability calls for a new [optional] > section to be added to the JSBSim configuration file format. A new section, > "external_reactions" will be added. Within that section, any > number of external forces can be defined. Here is the proposed general > format, as an example (would be in the JSBSim config file for an > aircraft): >
> > This is entirely defined and executed from > within JSBSim. To activate the chute, the reefing level would have to be > set to a non-zero value. Since this is a JSBSim function, it could be > defined to include an on/off value, as well. > > This does place upon the FlightGear side the > burden of deciding when to apply an external force (catapult, or > hook/wire), tow line, etc. and what the magnitude of the applied force > should be. I think that's the way it should be, though, and I think that's > the way it already is, now, but I am unfamiliar with the carrier code on > the FGFS side. > > I think we have thought this out well, however > if there are any comments on this plan, we'd sure like your > comments. > Hello Jon, Bravo, ...that is great Some Aircraft models within the JSBSim FDM category are waiting for that new huge improvement. Regards -- Gérard ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
