A gas turbine engine 1 wherein {HEAD ~ said lands} are adapted for {TAIL ~ rotation} by forming them integrally with upstream face of disc 
A gas turbine engine 1 wherein { HEAD ~ said lands } are adapted for { TAIL ~ rotation } by forming them integrally with upstream face of disc
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH