16) A 'frise' aileron Report

provide aerodynamic balancing so to assist the pilot to move the controls

ensures aileron control is retained at high angles of attack.

equalizes aileron drag in a turn.

17) Aerodynamic balance of a control surface may be achieved by Report

A horn at the extremity of the surface forward of the hinge line.

A trimming strip at the trailing edge of the surface.

Weights added to the control surface aft of the hinge line.

18) Why it is necessary to aerodynamically balance the control surfaces Report

Decrease the drag when the control is deflected.

Assist the pilot in moving the control.

Increase stability.

19) The extension portion of rudder as shown on the following image is to Report

prevent control surface flutter.

provide aerodynamic assistance for the pilot when moving the rudder.

make the pilot aware of the aerodynamic forces encountered when moving the control.

20) The balance tab is an auxiliary surface fitted to a main control surface Report

Operates automatically to provide feel to the controls.

Operates independently at which point in the length of cable the tensiometer is applied.

Operates automatically to assist the pilot in moving the controls.

EASA Questions Module%2011 Set%203:%20aeroplanes-fuselage