Dave, you are right: the IRKUT A002 has an elevator, but difficult to know to what it is linked...May be as the ABS of your car this is an automatic device... (may be linked to gyroscopes!!!

)
scroll down the page!
http://rvtpanet.club.fr/Galerie_phot...otos_irkut.htm
You could have also this kind of stabilator!
http://www.rotaryairforce.com/