This invention relates generally to the design and operation of {TAIL ~ a system} for producing {HEAD ~ electrical power} 
This invention relates generally to the design and operation of { TAIL ~ a system } for producing { HEAD ~ electrical power }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD