Function wrong

Sorry, I don’t know English well. In my function (in video) I use tour function “delta(rotator)”. This function don"t worc correctly and when camera (the rotation target of body). How you can see, the volume of output of function only multiply by 0,01. What wrong in my program, if it must slowly rotate the body of aircraft to gun, what rotates to camera? In chanse answer me on Russian language.