Bills,
I don't know about the engineer title..Just poor old country boy.........who is bad about going where sane people should not go...Note, I only fly twins or three or four and one five engine planes. It is called Twinsanity!!
This little idea was before I caught the twin craze. You should see what I have tried with gyros!!
Hint....twin engine plane...rudder not in prop blast....separate channels on the engines....Gyro on the engines to aid hovering!!
Told you twins make you nuts..Wonder what I did with that assembly....have a Ultra Sport 1000 with two engines and empty fuse..Got to go!!
The one good thing about this hobby is that I KNOW I WILL WALK AWAY FROM THE CRASH!! Tee Hee.
CG shift is normal for most planes that retract to the rear. If you think HellCats and Corsairs are bad...try the P-38, P-61 with three heavy landing gear and sometime brakes, that ALL rotate to the rear!!
Can you say balance with the gear up!! Let us not also not consider the effect of aerodynamic drag on the landing gear down verses up,,,just to keep it interesting! I usually insert a program for some down elevator when the gear goes up on my P-38's due to drag going away. Yes, I said DOWN elevator, due to wind resistance. One problem with this...if you set the gear movement to scale like speed, the radio commands down elevator immediately upon hitting the retract switch...haven't figured how to get around that one!!
Good Luck,
Twinman