I see a difference with the tiller off or on. If on, nevertheless front wheel is slightly turning, maybe it should not move at all ?. Is that the same issue you are seeing ?
Hi, yeah that’s it. Release your parking brake ,start taxi and did this manipulation. when you click on it, the front wheel should not move. So yes, as you said, that’s exactly the problem.
The nose wheel should move slightly with rudder controls tiller turned off as this is how the real aircraft works. Rudder controls tiller turned on is for the sim for those that don’t have a separate device to control nose wheel steering. As per the OP, in the real aircraft, you can press (hold?) the button in the middle of the tiller to allow you to push the rudder pedals without turning the nose wheel at all to test the control surfaces during taxi but this doesn’t work in the sim
So from what I understand and reading, even if the tiller is disconnected, when you move the rudder pedals, front wheel will move 6 degrees max right/left and that is what I am seeing into the sim. Does not seem to be a bug then or am i missing something ?
If you push the “pedal disco” button on the tiller and use the rudder pedals, there should be no movement of the front wheel at all. Regardless of whether you have active or not the “rudder control tiller” on the EFB.
A related problem is that friction in the simulator should be significantly increased to accurately simulate how the aircraft behaves in real-world taxi.
Friction and momentum are practically imperceptible, and minimal input from the tilter or rudder pedals makes the aircraft turn as if it weighed next to nothing.
Yes, but the bug here is that when you press on the pedal disc and use the rudder, the front wheel keeps moving, which it shouldn’t. If that can be fixed, that would be great.
Yes. With rudder controls tiller turned off, the nose wheel will move +/-6 degrees. The disconnect button in the middle on the tiller should prevent the nose wheel from moving at all but doesn’t
Out of curiosity I’ve also tested the others Inibuilds Airbus (A320/A321/A400) and it seems they suffer the same issue. For the A310 I did not find a tiller as on the others Airbus.
@ClammyMite02374 : if you could also test the others aircraft and in case they have the same issue maybe you could update title/description to include all of them.
I would think this is not a SU4 regression and issue also exists in the live version.
The issue has always existed on all variants of inibuilds Airbus (A310 is different). I believe it’s basically a feature that has never worked - a button you can push but doesn’t actually do anything on the sim
Pushing the button has an impact: it limits the angle of front wheel turn radius but the correct behavior should be to completely deactivate the front wheel.
Ah so it does the same as changing rudder controls tiller to off. I didn’t know this as I’ve always used pedals for rudder and an Xbox controller stick for nose wheel steering so never used rudder controls tiller
From the tests I did your statement is correct. I am using the Logitech extreme 3D so front wheel is coupled with the rudder stick axis. When tiller is turned off from the EFB or by clicking on the tiller button, front wheel is still moving with a reduced angle.
The bug report details that the problem is: that when pressing the tiller disk button, to perform the rudder flight control checks on taxi, the plane continues moving +/- 6 degrees by the rudder pedals input.
AIRBUS STATES
The tiller disconnect button on an Airbus aircraft (often called the PED DISC or Pedal Disconnect) is a switch on the nosewheel tiller that temporarily separates the rudder pedals from the nosewheel steering, allowing pilots to perform flight control checks (like checking full rudder travel) without causing the aircraft to swerve wildly on the taxiway. It’s used during taxiing to check that the rudder moves freely, while the pedals are normally linked to the tiller for low-speed steering, but this button disables that link for the check, then it’s re-engaged for normal taxiing.
Closing as team stated this is as designed. Airbus aircraft by design have +/- 6 degrees of nose wheel steering available with the tiller disengaged. The Tiller is considered an optional system designed to aid with aircraft movement on the ground. It also has no regulatory requirement for its design, capability, or usage. The Tiller is also not used for the takeoff ground run; all steering is limited to the nose wheel inputs supplied by the rudder pedals.
The only time the tiller disconnect is used is for rudder flight control checks on taxi out in the Airbus. This is often done while moving (time is money). While being a regulatory requirement it is also logical to want the ability to steer a 100K+ aircraft at all times when it is under movement with redundancy.
