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Engine Size 747-400

  1. Jan 28, 2006 #1
    Does anyone know the diameter of the 747-400 engines used please? Obviously there are different manufacturers but I wouldn't have thought that would alter the size. What about the size of the new Airbus A380 engines as well?:confused:
     
  2. jcsd
  3. Jan 29, 2006 #2
    powerplants..
    "Four 252.4kN (56,750lb) Pratt & Whitney PW-4056 turbofans or 266.9kN (60,000lb) PW-4060s,
    or 275.8kN (62,000lb) PW-4062s, 252.4kN (56,750lb) General Electric CF6-80-C2B1Fs
    or 273.6kN (61,500lb) CF6-80-C2B1F1s or -80-C2B7Fs,
    or 258.0kN (58,000lb) RollsRoyce RB-211-524G
    or -524Hs, or 262.4 to 266.9kN (59 to 60,000lb) RB-211-524G/H-Ts."
    (from airliners.net)

    The diamemeter are all around 2 meter.
     
  4. Jan 29, 2006 #3

    Astronuc

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    Staff: Mentor

  5. Jan 29, 2006 #4

    FredGarvin

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  6. Jan 30, 2006 #5
    So it seems that General Electric produce the largest engines ( funny, I thought they were all standard) which makes Rolls Royce engines I don't know how large though. As for the A380 I think they could be 9 ft wide.:smile:
     
  7. Jan 30, 2006 #6

    FredGarvin

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    As a note, that is the fan diameter. The actual core diameter will be much less.
     
  8. Jan 30, 2006 #7

    Astronuc

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    Rolls Royce's Trent Engines are similarly large - 116 inch fan (high bypass) for the A380.
    http://www.rolls-royce.com/media/product/trent900.jsp

    In general, RR products - http://www.rolls-royce.com/media/product/default.jsp

    See Trent 800 for 777 engine - http://www.rolls-royce.com/media/product/trent800.jsp

    See RB211-524 & -22B for 747 engine - http://www.rolls-royce.com/media/product/rb211524.jsp
     
  9. Feb 1, 2006 #8
    The latest 747-400 models have an engine thrust of 70000 lbs. Is this per engine though? If it is I did work it out and know the answer but was wondering if it was per engine. It seems that you certainly wouldn't want to be standing near these engines when on idle.
     
  10. Feb 4, 2006 #9

    Astronuc

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    The 70,000 lbs is per engine! The GP7000 is rated at 81,500 lbs. Jet engines have a clearance area fore and aft. One does not want to get too close to either end. Idle is not too bad, but with thrust the exhaust will 'blow' one away. :biggrin:

    http://www.enginealliance.com/images/gpfeat_08.gif

    GE - http://www.geae.com/engines/commercial/cf6/index.html

    GE - http://www.geae.com/engines/commercial/gp7000/index.html
     
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