I have found this to be an excellent reference most of which is directly applicable to aircraft.
MANEUVERING AND CONTROL OF MARINE VEHICLES by Michael S. Triantafyllou and Franz S. Hover Department of Ocean Engineering Massachusetts Institute of Technology Cambridge, Massachusetts USA http://ocw.mit.edu/OcwWeb/Ocean-Engineering/13-49Maneuvering-and-Control-of-Surface-and-Underwater-VehiclesFall2000/LectureNotes/ Cheers Norman _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel