The cooling air flow can be precisely controlled by optimizing the size, shape and number of {TAIL ~ transfer tubes} 196, apertures 202 and {HEAD ~ apertures} 204 
The cooling air flow can be precisely controlled by optimizing the size , shape and number of { TAIL ~ transfer tubes } 196 , apertures 202 and { HEAD ~ apertures } 204
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH