{TAIL ~ An apparatus} for cooling components of an airplane engine at least partially operated by a cryogenically stored propellant via cooling air includes {HEAD ~ an air supply line} for supplying the cooling air from an outside environment 
{ TAIL ~ An apparatus } for cooling components of an airplane engine at least partially operated by a cryogenically stored propellant via cooling air includes { HEAD ~ an air supply line } for supplying the cooling air from an outside environment
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH