question about the dora flight characteristics

[tobaschi]

Hi,

 

i have a question about the Dora flight characteristics, when i fly the Dora it has the attitude to roll left when i center my stick, is that normal or is there anything wrong with my controls?

[IonicRipper]

Its the engine torque trying to make the plane spin; completely normal for a plane with a propeller. The effect should be less at ~2300 RPM.

[tobaschi]

Its the engine torque trying to make the plane spin; completely normal for a plane with a propeller. The effect should be less at ~2300 RPM.

 

thank you for your feedback : )

[Anatoli-Kagari9]

Its the engine torque trying to make the plane spin; completely normal for a plane with a propeller. The effect should be less at ~2300 RPM.

 

And, while some ww2 birds had rudder and even aileron trim controls, the Fw190 had trim tabs that were supposed to be adjusted by ground crew while on ground, and set for a reference speed / cruise configuration. Away from that you would have to input rudder and aileron to keep it flying straight and coordinated.

 

If you pick the default - free flight - quick situation that comes with the fw190 you'll respawn at a flight configuration / regime that ensures perfect balance, and you'll see that you do not need to input aileron or rudder to keep flying wings level and coordinated, until you change speed/AoA/power...

[wolfstriked]

And, while some ww2 birds had rudder and even aileron trim controls, the Fw190 had trim tabs that were supposed to be adjusted by ground crew while on ground, and set for a reference speed / cruise configuration. Away from that you would have to input rudder and aileron to keep it flying straight and coordinated.

 

If you pick the default - free flight - quick situation that comes with the fw190 you'll respawn at a flight configuration / regime that ensures perfect balance, and you'll see that you do not need to input aileron or rudder to keep flying wings level and coordinated, until you change speed/AoA/power...

 

You sure rudder trim tab is not modeled?On TO I notice my rudder pedals move slightly towards right rudder while the controls indicator shows right rudder also.

[Flagrum]

You sure rudder trim tab is not modeled?On TO I notice my rudder pedals move slightly towards right rudder while the controls indicator shows right rudder also.

You have probably (well, certainly!) enabled "auto rudder" under Options --> Special --> Fw-190.

[wolfstriked]

You have probably (well, certainly!) enabled "auto rudder" under Options --> Special --> Fw-190.

 

I just checked and its off.I am finding that when I press a little left rudder to eliminate any rudder offset that the plane handles even better.I wonder why its only on my game though and only on the Dora as the P51 doesn't exhibit this behavior.

[Flagrum]

I just checked and its off.I am finding that when I press a little left rudder to eliminate any rudder offset that the plane handles even better.I wonder why its only on my game though and only on the Dora as the P51 doesn't exhibit this behavior.

The rudder does not move without being told to do so.

 

Change the tick mark of that option, save it, go back to it and remove it again and save it again. (iirc there was/is a bug that causes these options to not be recognized properly by DCS unless you changed it at least once).

 

edit:

... or ... well, "and/or" check your controler mapping (i.e. dead zones and multi-assignments).

[wolfstriked]

Thanks but it didn't work.I put auto rudder on and the rudder was moving to coordinate turns etc.Turned it back off and once a certain speed is met it moves slightly right rudder.

[Anatoli-Kagari9]

You sure rudder trim tab is not modeled?On TO I notice my rudder pedals move slightly towards right rudder while the controls indicator shows right rudder also.

 

Rudder and aileron trim tabs are modeled but fixed, set for a given aircraft regime ( cruise ).

 

Whenever your power settings / speed / AoA divert from that state, you'll need rudder and aileron input.

[wolfstriked]

I understand that but what I have is a bug where the rudder moves slightly left and stays there.Yo-Yo posted that he noticed he would completely lose his rudder indicator on controls indicator and that he felt that his rudder was not working.Its a work in progress so I am not worried yet.

[fastfreddie]

OP-reduce rpm when you are at cruising speed to around 2200 range to reduce the torque effect. If you get it set at the right altitude and speed its close to perfect trim.

[iFoxRomeo]

You sure rudder trim tab is not modeled?On TO I notice my rudder pedals move slightly towards right rudder while the controls indicator shows right rudder also.

 

You have probably (well, certainly!) enabled "auto rudder" under Options --> Special --> Fw-190.

 

I just checked and its off.I am finding that when I press a little left rudder to eliminate any rudder offset that the plane handles even better.I wonder why its only on my game though and only on the Dora as the P51 doesn't exhibit this behavior.

 

The rudder does not move without being told to do so.

 

Change the tick mark of that option, save it, go back to it and remove it again and save it again. (iirc there was/is a bug that causes these options to not be recognized properly by DCS unless you changed it at least once).

 

edit:

... or ... well, "and/or" check your controler mapping (i.e. dead zones and multi-assignments).

 

Wolfstiked, have the same situation here.

Auto Rudder OFF and T/O Assi 0%

Still the rudder moves without my input as soon as the airspeed increses from Zero onwards.

 

 

When flying with 2400RPM and ~490km/h in zero wind conditions the Dora is pretty well trimmed with the turn and slip indicator centered. You only have to trimm the horiz. stab. then.

[Anatoli-Kagari9]

The rudder, and ailerons moving as you gain speed, and dynamic pressure build is perfectly normal because their fixed trim tabs are there exactly to cause that small deflection without the pilot having to make control inputs himself.

[wolfstriked]

Wolfstiked, have the same situation here.

Auto Rudder OFF and T/O Assi 0%

Still the rudder moves without my input as soon as the airspeed increses from Zero onwards.

 

 

When flying with 2400RPM and ~490km/h in zero wind conditions the Dora is pretty well trimmed with the turn and slip indicator centered. You only have to trimm the horiz. stab. then.

 

I am uploading a video to show just what I mean and you beat me to it. But you went a step further as I couldn't get the plane to slow down enough to show it would center by itself and you go and put the plane into a spin!!:P

 

The rudder, and ailerons moving as you gain speed, and dynamic pressure build is perfectly normal because their fixed trim tabs are there exactly to cause that small deflection without the pilot having to make control inputs himself.

 

But this behavior is when the rudder has a trim tab on the side of which the Dora doesn't.This tab forces the rudder sideways.I am hoping its not normal because when I fly with it centered by pressing on the rudders to center the plane is more stable and just feels ever so slightly better.

[Anatoli-Kagari9]

As far as I can see, there's indeed a rudder trim tab in the Dora, and I bet it is deflected to the left ( as seen from behind the tail surfaces ) thus helping to push the rudder right ( again as seen from the back ) and hence the aircraft nose also to the right...

[wolfstriked]

I don't see a trim tab on mine.Are you also seeing the slight right rudder with speed?Just looked on the DCS Dora page and it does state that it had trim tabs set on ground for both rudder and ailerons.But I wonder why aren't the ailerons also moving then?

 

And another thing is why is the elevator trim only uses 3deg when in the indicator in cockpit it shows 5deg both neg and pos.I feel that landings would be easier with some more trim on the elevator.

[wolfstriked]

Here is a video showing it and a nice landing also.:D

 

[Anatoli-Kagari9]

Rudder trim tab - page 20 of the Dora Manual, paragraph 4...

 

"The center-mounted fabric-covered rudder has aerodynamic horn balancing as well as mass balancing, and has a trim tab that can only be adjusted on the ground"

 

Also, in the external view, if you take a closer look at the rudder, you'll see the tab ;-)

 

I am away from my sim PC, so I cant take shots.

 

I guess the rudder trim tab will look slightly displaced to the left, as seen from behind, thus forcing the rudder to the right, which is expected to compensate for the "left turning tendencies".

Edited August 31, 2014 by jcomm

[wolfstriked]

Still don't see the trim tab.Hopefully a dev comments on this.

[Eroxz564]

Just bought the dora and have the same problem keeps rolling over all the time whatever i do.. almost unflyable :/

[Buzzles]

Just bought the dora and have the same problem keeps rolling over all the time whatever i do.. almost unflyable :/

 

Rolling to the left in flight is normal.

It's trimmed to fly level at about 450kph and around 2300 RPM.

[Eroxz564]

Rolling to the left in flight is normal.

It's trimmed to fly level at about 450kph and around 2300 RPM.

 

So it is normal that the plane even rolling left on idle in the air ? :P

[ZaltysZ]

So it is normal that the plane even rolling left on idle in the air ? :P

 

Yes, because it is not trimmed for idle :)

[Buzzles]

So it is normal that the plane even rolling left on idle in the air ? :P

 

Yes, airflow is still going over the wings is it not?