Are slats shy ?

[CaptainDoggles]

Originally Posted by Friedric

And there should be a bang nose isn it ?

Only if they open violently, i.e you go from low to very high AOA in a short amount of time. It's basically just like a drawer in your kitchen. If you yank it open it'll slam into the end of its track. If you open it smoothly it won't.

[CaptainDoggles]

Originally Posted by cheesehawk

Unless it was very very drastic, I doubt you'd hear it over an engine anyways.

Agree. It'd probably be more like a tactile sensation through the controls.

[TomcatViP]

In that case the noise of the shock will travel inside the wing just to be amplified by the vast empty space of the fuselage (resonance) where there is the pilot. I think that the Bang (if there was one ever) wld be audible above the eng noise (just like AP bullets impact etc...).

Reading modern account of private pilot flying the 109 E shld give the answer.

[CaptainDoggles]

Originally Posted by TomcatViP

(resonance)

I don't think this word means what you think it means.

[TomcatViP]

I checked on a dic but I still might be wrong.

It might be tht the word "reverberation" was more expected here

[Robo.]

Originally Posted by TomcatViP

I checked on a dic but I still might be wrong.

It might be tht the word "reverberation" was more expected here

I think you used the word absolutely correctly (with all due respect, Doggles) and it makes perfect sense. Would be great to have that accoustic side modelled as well.

[robtek]

Anytime the 109 slats are mentioned from pilot-reports they deploy with a loud "Bang".

From the way that they are working i'd imagine that there is a definite hysteresys between deploying and returning, so controling that might be a wee bit difficult and not the optimal aoa.

[Crumpp]

Anytime the 109 slats are mentioned from pilot-reports they deploy with a loud "Bang".

No they will only bang out if you jerk the stick and rapidly transgress the deployment angle of attack.

controling that might be a wee bit difficult

There is no reason for the pilot to control it. The slats work automatically. What I showed is that properly modeled, a Bf-109 should be able to control them.

Controlling them is not something though that is useful in terms of flight. It is just a function check for your games modeling, understand?

[Varrattu]

The current il2CoD bf-109 flight model files include the following entry:

LeadingEdgeSlats Mechanical Automatic Move 0.1 sec ResponseRange 15.0 to 15.01 deg

(personal note: when the BF109E stands on the ground, the AoA is 16 deg.)

Following the entry, the slats should function manually and/or automatically.

Looking at the current 15.0 to 15.01 deg AoA, the flaps should not work seriously.

Happy landings

Varrattu

[TomcatViP]

For me it only means that they were not satisfied with the result and blocked it without cancelling the code (for a latter revue ?)

Nice found Varra - a bit scary but nice