Spitfire Aileron Bug - Plz check!
 

Hi friends,

I noticed a bug in Spitfire aileron long time ago and had discussed with pilots from my squadron, all confirmed.

I feel the Spitfire flying with a significant "side slip", even if trimmed it doesnt flight straigh (dont consider wind...).

When we are on land, both ailerons are at neutral positions, but after takeoff the ailerons move a little, rolling do right side.
We can notice that looking to right wing aileron, who will be a "little up".

Tested what this can affect the flight: with fuel cock off and prop pitch set to 0 (no torque) the plane keeps rolling right!

The image below shows the bug.

http://i46.tinypic.com/egobcw.png

Please check this and, if comfirmed, let's report this bug to be fixed!

Thx,

=AN=Bluesman

.
Rudder trim?

where is the bug again? I didn't understand this... :-/

Aileron deflection is probably the effect of trimmer at higher speed. The higher the speed, the more deflection aileron should get. Aircrafts are pre-trimmed at spawn AFAIK.

I've seen this too, but just assumed it was the pre-set trim and the instability of the Spitfire flight dynamics.

Hi,

Sorry about my bad english... its hard to understand! :cool:

But Spitfire dont have aileron trim, only rudder and elevator...
Im not expert, but I think if it was a "pre trim" it could be verified on land.

This "bug" is not velocity dependent, it occurs when u leave ground.
If we set all trims to neutral, engine off and prop pitch 0 the aircraft rolls to right. When I compensate the aileron with joystick, forcing to a "neutral" position, the plane flight straight how desirable.

@ Bluesman - Because the Spit aileron trim is set on the ground, it's only perfect for a specific flight speed and throttle setting.

A combination of rudder trim and throttle setting will reduce the effect to a minimum, although it shouldn't really be possible to fly the Spit totally 'hands off' for any great length of time.

You'll also notice that in a fast dive, the rudder trim goes way off in the slip indicator, needing a lot of re-trimming on the way down, although I find it easier to just press the pedals. :)

I certainly wouldn't call this a bug, more of a flight characteristic. ;)

Spitfire II Pilot's Notes on diving: (http://www.scribd.com/doc/4598146/Pi...lin-XII-Engine)

Has anyone been able to dive the Spitfire (any Mark) faster than 420 mph ASI without losing the control surfaces?

Thx for replies!

So:

1. The difference between ailerons "on ground" and "in air", the displacement forcing a right roll is normal?

2. Consider rudder trimmed to center side slip, we still expect a little instability (eg. glissade) according to Spitfire flight caracteristics?

PS: We have other aircrafts in CoD that are not affected by this eg. Tiger Moth. In IL2 1946 we dont have this effect too...

Thx,

=AN=Bluesman