The downward aileron deflection of the upward going wing will stall
first.
You change the camber of the wing and increase the angle of attack,
Virg
On 12/13/2014 8:51 AM, Tinyauto--- via KRnet wrote:
>
> The idea of differential control having a side advantage of reducing the
> chance of stall is nonsense to me. Lets say we are flying along checking
> out something on the ground and are in a moderately steep bank of maybe 30 de
> grees and allow the airplane to get somewhat slow. It would seem if the
> pilot would slam in full deflection that the differential would actually
> cause a stall of the already slower traveling wing on the inside of the turn.
>
> Now I realize if the airplane didn't have differential control and the turn
> didn't stay coordinated that the nose of the airplane would blank out part
> of the wing and possibly causing a stall. Differential aileron helps an
> airplane fly easier (less pilot attention) due to not having to use two
> separate controls to keep flying coordinated. However I am just not grasping
> the idea of it "reducing the tendency for the wing to stall" part. Am I
> wrong?
>
> Kevin Golden
> Harrisonville, MO
>
>
>
>
>
>
> Differential aileron deflection
>
>
> <http://en.m.wikipedia.org/wiki/File:DifferentialAileron.svg>
> http://upload.wikimedia.org/wikipedia/en/thumb/3/3a/DifferentialAileron.svg/
> 450px-DifferentialAileron.svg.png
>
> Illustration of a Differential aileron
>
> The geometry of most aileron linkages can be configured so as to bias the
> travel further upward than downward. By excessively deflecting the upward
> aileron, profile drag is increased rather than reduced and separation drag
> <http://en.m.wikipedia.org/wiki/Flow_separation> further aids in producing
> drag on the inside wing, producing a yaw force in the direction of the
> turn.
> Though not as efficient as rudder mixing, aileron differential is very easy
> to implement on almost any airplane and offers the significant advantage of
> reducing the tendency for the wing to stall
> <http://en.m.wikipedia.org/wiki/Stall_(flight)> at the tip first by
> limiting the downward aileron deflection and its associated effective
> increase in angle of attack.
>
> Most airplanes use this method of adverse yaw mitigation due to the simple
> implementation and safety benefits.
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