> Off the top of my head (and I'm in a real hurry at this second), I > think it would be nice to make it possible to supply the FDMs with a > force vector and point of application - perhaps even a moment vector. > Is that what you are proposing?
The last time this topic came up it started out about glider towing, and then spread out into related things like: barriers, tow cables, arresting cables, drag chutes, tow bars, spin 'chutes, etc. From the FDM's point of view each of these is a force vector applied to some point on the airplane. Maybe we need a descendant of FGForce called ExternalForce, and a list of these things for each airplane (just like engines). For a catapult the ExternalForce would have an origin at the nose wheel (or thereabouts, it's up to the config writer) and would be pointed say, straight ahead. At the activation of a catapult key the force will have a certain magnitude for a certain time (much easier than for a certain distance). It's important to remember that the FDM doesn't know a ship from Shinola. Dave -- **************************** David Culp [EMAIL PROTECTED] **************************** _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
