WIND-TUNNEL INVESTIGATION OF THE EFFECT OF TAB BALANCE ON TAB AND CONTROL-SURFACE CHARACTERISTICS

摘要

The results of the investigation indicated that, in general;tab balance affected tab hinge-moment characteristics in much the same manner that flap balance affects flap hinge-moment characteristics. A moderate amount of tab balance did not seem to have any adverse effect on flap hinge-moment characteristics. Transition strips placed near the leading edge of an airfoil reduced the effectiveness of either plain or balanced tabs. Opening the tab gap reduced the tab effectiveness, but the reduction became less as the tab balance was increased.