Version: 1.4.20.0
Frequency: Consistently
Severity: High
Context: All aircraft, in-flight
Bug description:
With zero rudder input (even with deadzone setup) there is a constant 1% right rudder input. This is evident also in the Debug Aircraft Tracking window (Rudder Final: 1). This in turn causes a gentle constant banking tendency, which is especially obvious in non-powered aircraft (gliders).
Repro steps:
Fly any aircaft, open the Debug Aircraft Tracking window in dev mode and observe the 1% rudder input even when none is given.
Attachments:
Hello @GotGravel
I can’t replicate the issue.
Do you still have the problem if you unplug all your peripherals and restart the sim?
Regards,
Sylvain
Sorry for my late reply Sylvain, not checking in here daily.
Unplugged my controls (rudder, joystick and bravo) and still have “Rudder Final: 1”. Consistently with other aircraft as well.
On some aircraft (like the C172), this can be explained by the influence of [FLIGHT_TUNING] rudder_engine_wash_on_roll parameter.
But that’s unlikely with a glider, unless the parameter was left over by accident.
Can you let me know which glider demonstrated the issue for you?
Also, can you please check what’s the exact value of the RUDDER DFLECTION PCT simvar when this happens?
Regards,
Sylvain
Hi Sylvian,
Yeah my thoughts too, but should be no issue in gliders at all. Mine was tested in the AS 33 Me by Got Friends. Still at Rudder Final:1, and RUDDER DEFLECTION PCT is 0.00000000
(btw besides unplugging controllers, first thing I had done was check deadzones…nothing helped here)
Regards,
Raimond
Update! “rudder_engine_wash_on_roll = 1.00” was the problem (but should not be…engine is off). When I set this to 0 all is ok. However…Ideally this is 1.00 as this glider is powered by an extendable propeller. So looks like an MSFS bug
Just to be really complete…if 2020 I do not have this problem with the same glider.
1 Like
Yes, it doesn’t depend on engine thrust so I’ll have this reviewed.
Regards,
Sylvain
1 Like
Hello @GotGravel
Reviewed this with our flight model engineers and this is the expected behavior.
This parameter refers to how the rudder is designed.
On some aircraft, rudder is not symmetrical and is designed to produce a lateral force when in neutral position to compensate the opposite force caused by the prop wash at cruise speed.
It’s as if the rudder had a constant trim offset, as explained in the documentation.
So this parameter having an effect with the engine turned off is expected, and gliders should have this set to 0.
Regards,
Sylvain
