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Aerospace What is the most fuel efficient Turbojet engine by pass ratio of A380?

  1. Feb 12, 2013 #1
    With four Rolls-Royce Turbojet engines attached on A380, I wonder, if the optimization of fuel efficiency as its prime design factor/variable? If so, may I know, what it is air by pass ratio?
     
  2. jcsd
  3. Feb 14, 2013 #2

    etudiant

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    Re: What is the most fuel efficient Turbojet engine by pass ratio of A

    The A 380 engines have a bypass ratio of about 9.
    While fuel economy is an important design factor, it is always a compromise with manufacturing cost and reliability equally important. Engines currently go for 5 years between overhauls or more. Maintaining stable performance throughout is a critical requirement.
     
  4. Feb 14, 2013 #3
    Re: What is the most fuel efficient Turbojet engine by pass ratio of A

    Huh. . . I raise my thumb up! It comes to near perfect answer. Thank you very much.
     
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