Engine Size 747-400

  • Thread starter Badass
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  • #1
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Main Question or Discussion Point

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:
 

Answers and Replies

  • #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
FredGarvin
Science Advisor
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The fan diameter on the GP7000 is 116 in.
http://www.geae.com/engines/commercial/gp7000/ [Broken]
 
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  • #5
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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:
 
  • #6
FredGarvin
Science Advisor
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As a note, that is the fan diameter. The actual core diameter will be much less.
 
  • #7
Astronuc
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Badass said:
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:
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 [Broken]

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

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

See RB211-524 & -22B for 747 engine - http://www.rolls-royce.com/media/product/rb211524.jsp [Broken]
 
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  • #8
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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.
 
  • #9
Astronuc
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Science Advisor
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Badass said:
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.
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 [Broken]

Starting in 1971 with the 40,000 lb. thrust CF6-6 and continuing today with our newest, highest thrust CF6 engine, the 72,000 lb. thrust CF6-80E1, more CF6 engines have been produced and have flown more hours than any other high bypass engine family ever produced.
GE - http://www.geae.com/engines/commercial/cf6/index.html [Broken]

The Engine Alliance is offering the GP7200 for the Airbus A380 passenger and freighter configurations. The GP7200 will initially certify at 76,500 lb. (340 kN) of thrust and subsequently at 81,500 lb. (363 kN) of thrust. The engine will be offered with two ratings appropriate for the various A380 configurations and take-off weights: GP7270 for the 560 tonne variant, and GP7277 for the 590 tonne A380-800 freighter.
GE - http://www.geae.com/engines/commercial/gp7000/index.html [Broken]
 
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