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If an aircraft have two vertical tails then pilot push in the rudder pedal the rudders will not be deployed at the same angle.It is used throughout the all envelope of flight or is it possible only for low speed? Why and which ones is more deflected? enter image description hereenter image description here

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    $\begingroup$ You know for a fact that all fighters with twin tails deflect the rudders at different angles? Because I think you may be making a faulty assumption. But, if you have a specific and verifiable example, please share details. $\endgroup$ – Michael Hall Oct 10 '19 at 20:58
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    $\begingroup$ Do you see that in which aircraft in which situation? You ask as if it was true of all of them, but it is unlikely the same in all types. Do you mean F-14? MiG-29? F/A-18? De Havilland Sea Vixen? Su-27? De Havilland Venom? F-22? F-35? Very different designs, with very different requirements, made by different companies… $\endgroup$ – Jan Hudec Oct 11 '19 at 5:28
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    $\begingroup$ I wouldn't take that picture as evidence of different rudder deflections: the picture isn't taken from exactly head on. The nose looks like it skews to our left, and whereas external fuel tank on our right is pointed straight forward, the one on our left looks pointed outward. I highly doubt that the nose is asymmetrical and the left fuel tank was mounted at an angle; we're just seeing the plane from a bit of an angle. I think that may account for the rudder's perceived deflection, too. $\endgroup$ – yshavit Oct 11 '19 at 6:27
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    $\begingroup$ Rudder toe in or out it's used for pitching or as brake device. But this is differential deployment left /left not left /right pathern $\endgroup$ – George Geo Oct 11 '19 at 13:21
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    $\begingroup$ This feature may be quite different for parallel rudders (e.g F15) and V-shaped one (e.g. F22, or in the opposite direction the A12), for fly-by-wire aircraft (in which you can virtually deflect any surface in any direction independently) and for conventional transmission (e.g. P38) (in which there are physical links limiting independent deflection of both rudders) $\endgroup$ – Manu H Nov 5 '19 at 16:18

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