David Megginson said: > Andy Ross wrote: > > > The number is a (conventional, right handed) rotation about the Y > > axis, which in YASim's coordinate system points out the left wingtip. > > So a positive incidence points down. Unless there's a sign bug (or > > three, or five...) in there somewhere. > > A positive incidence points down?? So if I set the incidence angle of the > wings to 3 degrees, the angle of attack of the wings when the fuselage is > level will be -3 degrees? That doesn't seem to be happening with the models. >
You are right, that doesn't sound right. At least if a positive value did point down, it would be in conflict with the AOA parameter. That said, are you sure the DC-3 is supposed to have a negative incidence? I just looked up the p51 and the diagram clearly shows a positive incidence. The tail is +2.0 degrees (so that at level AoA=0 on main wing, the tail would have a AoA of 2.0 degrees). Best, Jim _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
