{HEAD ~ Compressed air} is then delivered to {TAIL ~ combustor} 16 and airflow from combustor 16 drives turbines 18 and 20 
is delivered to
{ HEAD ~ Compressed air } is then delivered to { TAIL ~ combustor } 16 and airflow from combustor 16 drives turbines 18 and 20
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH