CONTROL SURFACES

Physical principles

L : Lift

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W : weight

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L1 : lift produced by the elevators which compensates for

the diving or ascending attitude of the airplane.

Tailplane

T-Tail configurations

The horizontal surfaces are mounted at the top of the vertical fin structure.

Double vertical tailplane

Better manoeuvrability or different uses

Elevators

A Canard: movable surfaces instead of the elevators

A Canard is a fixed-wing aircraft configuration in which a small horizontal surface, also named canard or foreplane, is positioned forward of the main wing in contrast to the conventional position at the tail. Because of this, it is

sometimes described as "tail-first".

3 types of ailerons

A) Normal

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B) On the leading and trailing edges

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C) As control surfaces which replace the tailplane

C

B

A

Prototypes

A) Tailplanes used in aircraft the shape of which may disturb the air flow on the elevators

B) Double tailplane for tactical reason

C) V-tail plane to reduce the control surfaces

C

B

A

Curiosity on the tailplane