Abraham Gubler said:An alternative would be to lift the propeller out of the ramp traffic. Would add an additional couple of CV joints and a new tail structure . . .
Maybe we're overthinking it a little? What's the ground clearance for the tailrotor of, say, a Mi-17? And it works just fine with a rear ramp. If the Kamov's landing gear is tall enough, maybe the ground clearance would be enough?