The main block of a drop power station 1, wherein the first and second rotatable elements are wheels having certain and different speeds of rotation and having {HEAD ~ friction disks} as a connection between {TAIL ~ sub systems} 
The main block of a drop power station 1 , wherein the first and second rotatable elements are wheels having certain and different speeds of rotation and having { HEAD ~ friction disks } as a connection between { TAIL ~ sub systems }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL