I came across this discussion about adding a new open source FDM to X-Plane, using CFD methods to get really really high fidelity models.
On Wed, 2006-06-14 at 20:32 -0500, Jon S. Berndt wrote: > Snap roll: > > This is indeed the recipe for a snap roll: starting from a speed slightly > above the stall, apply a sudden yaw with the rudder, apply opposite aileron, > and pull back on the yoke. SNAP! --- One wing stalls and the plane rolls > over. > > [I liked the clever use of the word, "recipe" with the phrase "snap *roll*"] > > This would be hard to model using lookup tables, but it might be possible > using JSBSim functions and a table or tables, together. Could be fun. I need > to think about this one. The first idea that comes to mind is that if the > aircraft speed minus the yaw rate times some characteristic lateral length > (span/2?) falls below the stall speed, then a rolling moment would be > generated - maybe a yawing moment, too. > > Jon > > > > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
