John Denker wrote: Hi John,
> In every aeronautical engineering publication I've seen, the > convention for "positive" has been: > -- Positive aileron deflection creates a positive rolling moment, > positive around the +X axis, i.e. roll to the right; > -- Positive rudder deflection creates a positive yawing moment, > positive around the +Z axis, i.e. yaw to the right; and > -- Positive elevator deflection creates a positive pitching moment, > positive around the +Y axis, i.e. nose up. > Could you pls share the names of publications you use to backup your statements? In every aeronautical engineering publication I've seen, convention was exactly opposite of "your" definition. For example, in the book "Aircraft control and simulation", by Brian Stevens and Frank Lewis, on page 128, there is a table (TABLE 3.3.1), where is clearly stated that positive movements of all primary control surfaces produce negative moments. best regards, Gordan ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
