ERJ145LR
Posts: 419
Joined: Thu Aug 26, 2004 12:55 pm

A380 Engine Comparison Question

Tue Dec 21, 2004 8:24 am

How will the size of the a380 engine compare to the engine size of the 777's GE90's?
 
widebodyphotog
Posts: 885
Joined: Wed Jun 30, 1999 9:23 am

RE: A380 Engine Comparison Question

Tue Dec 21, 2004 8:42 am

Both the engines available for A380 have fan diameters of 116 inches.

The GE90-95B has a fan diameter of 123 inches

The GE90-110B and -115b have a fan diameter of 128.3 inches.



-widebodyphotog
If you know what's really going on then you'll know what to do
 
prebennorholm
Posts: 6444
Joined: Tue Mar 21, 2000 6:25 am

RE: A380 Engine Comparison Question

Tue Dec 21, 2004 9:49 am

The RR Trent 900 and GP 7000 engines on initial A380 production will be rated at 70k lbs which is one third less than the largest GE90 engines.

The A330 and the A380 have roughly the same engine thrust even if the 330 is way less than half as heavy. Twins need that extra thrust in order to survive an engine shut down after V1 speed during take off.

Using the GE90-115B the A380 could easily have been a three engined plane like the MD11.

It all leaves an interesting growth potential, maybe especially for the cargo market. Maybe allowable footprint on airport concrete will be the limiting factor rather than technical issues?
Always keep your number of landings equal to your number of take-offs
 
gigneil
Posts: 14133
Joined: Fri Nov 08, 2002 10:25 am

RE: A380 Engine Comparison Question

Tue Dec 21, 2004 10:41 am

The A330 and the A380 have roughly the same engine thrust even if the 330 is way less than half as heavy.

Um, yeah but the 330 only has 2 engines.  Laugh out loud

N

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