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