190A vs 190D

[Charon]

once in th ma i asked ht why the nikis torque was screwed , he responded in what way ?. i said at edge of a stall you can instantly firwall with wep ( full power) with almost no change to the ac as far as torque effects. he said that was correct


i ask you is it ? methinks ht hates to be wrong.

lord dolf vader
 

Maybe, maybe not. Consider the Bearcat. One would expect that plane, with its high power to weigt ratio, big 15' prop and compact design to be quite a handful. Yet, because of the way it was engineered it was a very docile plane from a torque/p-factor standpoint according to pilot reports. Takeoff, for example, required practically no trim or rudder input:

Runup complete, the final checklist is run. Unlike many fighters, no trim is preset, or needed. Grumman learned many lessons from the earlier aircraft, and got a wonderful harmony of engine offset and surface deflection, so that very little yaw is evident on the takeoff roll. Not allowing the tail up helps, there is no gyroscopic effect.

This in a CAF takeoff protocol that requires full power takeoffs. Doesn't make "sense" to me, but that's the way it is. Perhaps the George is similar in this regard.

Charon

[Wilbus]

Just to chime in without having read all the posts. Madno, the TA152 is MUCH worse then the D9 at high speeds, compress alot easier and has got both worse roll and elevator controll then the Dora. And Dora does it worse then the A versions.

Don't know if it was this for real (as documents from WW2 seem to say it was the opposit) but if Whels is right the longer fuselage would be the reason to worse elevator controll.

[MANDOBLE]

It is extrange, I found Ta controls at hi speed light, the major cause of all my wingless Tas. But in my comparison I forgot to include the Ta, I'll try to find some time and test that plane too.

I may be wrong,  but the longer fuselage may be an advantage for elevator control and not the contrary. Your plane is just pivoting nose up around its GC but you have a longer "arm" (the longer tail) applying the same force. D9 fuselage is more aerodinamic than A series, the extra length may be compensated by this fact resulting in a similar drag.