An exemplary embodiment depicts the invention in {HEAD ~ a rotary engine} having {TAIL ~ a rotor} within a combustion chamber 
having
An exemplary embodiment depicts the invention in { HEAD ~ a rotary engine } having { TAIL ~ a rotor } within a combustion chamber
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH