{HEAD ~ The chain dot curve} in FIG 40 is the optimum curve for {TAIL ~ the ratio} of the gas turbine output to the gas turbine compressor pressure ratio 
{ HEAD ~ The chain dot curve } in FIG 40 is the optimum curve for { TAIL ~ the ratio } of the gas turbine output to the gas turbine compressor pressure ratio
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH