PPRuNe Forums - View Single Post - American twins,Brit triple spool engines?
Old 9th Mar 2011, 19:04
  #17 (permalink)  
bearfoil
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The TRENT weighs a ton less than a comparable GE. It gains six hundred extra pounds back because it labors behind a squashed Titanium cylinder array instead of a Carbon Fibre Wheel. Heavy Fan, lightweight Core.

GE, PW, Roller. An engine comes off wing out of plan, and it loses its SFC advantage (if there is one) in perpetuity.

Emirates chose EA engines over Rolls for its A380's. They are unwise, and don't know the value of Fuel??

More than any simple answer to engine selection, the complicated route would fill several books.