One aspect of the invention provides an igniter for igniting {HEAD ~ a fuel air mixture} in {TAIL ~ a combustion chamber} 
in
One aspect of the invention provides an igniter for igniting { HEAD ~ a fuel air mixture } in { TAIL ~ a combustion chamber }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL