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