Wings flex more with DLC up.

[Wawar]

Hey Heatblur, 

Just a little cosmetic remark/question... Since day one of the Tomcat, I noticed that when I activate the DLC, the wings flex more. Since the DLC "destroy" the lift on the wing upper surface, shouldn't the wingload be lesser, and therefore the flex should decrease?

Thanks. 

Edited January 21, 2023 by Wawar

[JCTherik]

I'm no pilot or a plane engineer, but doesn't the DLC destroy lift close to the body of the airplane?

And when opening DLC, you'd usually push more power in order to get the lost lift back and not drop out of the sky. So, assuming level flight or constant descent, you'd still have 1G of lift. So, same amount of lift, except it's concentrated more towards the tips of the wings -> I'd expect the wings to flex more.

 

But again, just speculating.

[Wawar]

@JCTherik : More speed or more AOA, wich results in more depression on the upper wing surface. (Lift formula : coefficient of lift(aoa) x speed² x wing surface x 1/2p)

So, due to DLC, for a straight and level flight with a defined speed : to counter the lost of wing surface , AOA must increase. Wich results in the same amount of lift generated by the wings.

If you reduce the wing area and don't act on the AOA or the airspeed to counter it, your wing will just generate less lift. So, less wingload, so less wing flex. 

But, let's say you are in a descent at constant TAS, level flight is no more a factor. So, the AOA increase is no more required. Try this : Descent, constant TAS, DLC activated (so DLC in middle position) : if you extend the DLC more, the wings flex more. But, more the DLC is out, the less depression on the upper wing surface, aka less lift, aka less wing load. I presume that the wings should flex less. 

Maybe there is a story with the location where the lift is generated on the wing, idk. But something seems off to me. If a dev could clarify this, It would be cool. 

Edited January 30, 2023 by Wawar