The braking elements comprise an axial stack of discs maintained in {TAIL ~ frictional contact} through at least a disc angularly secured to the non rotating part and {HEAD ~ at least a disc} integral with the rotating part 
The braking elements comprise an axial stack of discs maintained in { TAIL ~ frictional contact } through at least a disc angularly secured to the non rotating part and { HEAD ~ at least a disc } integral with the rotating part
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH