PHAK Chapter 6-7 Coupled Ailerons and Rudder

Coupled Ailerons and Rudder

Coupled ailerons and rudder are linked controls. 

 

This is accomplished with rudder-aileron interconnect springs, which help correct for aileron drag by automatically deflecting the rudder at the same time the ailerons are deflected. 

 

For example, when the control wheel, or control stick, is moved to produce a left roll, the interconnect cable and spring pulls forward on the left rudder pedal just enough to prevent the nose of the aircraft from yawing to the right. 

 

The force applied to the rudder by the springs can be overridden if it becomes necessary to slip the aircraft.

 

Flaperons

Flaperons combine both aspects of flaps and ailerons. 

 

In addition to controlling the bank angle of an aircraft like conventional ailerons, flaperons can be lowered together to function much the same as a dedicated set of flaps. 

 

The pilot retains separate controls for ailerons and flaps. 

 

A mixer is used to combine the separate pilot inputs into this single set of control surfaces called flaperons. 

 

Many designs that incorporate flaperons mount the control surfaces away from the wing to provide undisturbed airflow at high angles of attack and/or low airspeeds.

 

Coupled Ailerons and Rudder

phak6_0078_coupled_ailerons_and_rudder.mp3

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phak6_0079.mp3

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phak6_0080.mp3

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phak6_0081.mp3

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phak6_0082_flaperons.mp3

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phak6_0083.mp3

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phak6_0084.mp3

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phak6_0085.mp3

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phak6_0086.mp3

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