A movable control surface, as an aileron or rudder, having an added physical extension or weights forward of the hinge-point to reduce forces on a joystick or yoke.

Since the pressure of a fluid is proportional to its velocity, airflow over the upper surface of an airfoil causes suction [lift] because the airstream has been speeded up in relation to positive pressure of the airflow on the lower surface.

Hot air at high pressure, usually from the bypass section of a gas turbine engine, for de-icing, heating, and other uses.

The design or control of slotted or perforated wings with suction methods to reduce undesirable aerodynamic effects caused by the boundary layer, that region adjacent to the boundary where shear stresses dominate in the airflow over a wingform.

An engine fairing, generally circular, with welts or compound shapes in its surface to accommodate cylinder heads.