Kiwi dave
Topic Author
Posts: 893
Joined: Fri Aug 18, 2000 7:50 pm

747-400ER Engine Question

Fri Jan 23, 2004 8:50 pm

today CHC got its first visit of a 744ER (rego was VH-OEE) and the one thing that has struck in my mind is the size of the engines.

I was wondering if anyone knew if the engines on 744ER are bigger the engines on the 744?
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Joined: Wed Sep 17, 2003 12:17 pm

RE: 747-400ER Engine Question

Fri Jan 23, 2004 9:10 pm

Good question. Beyond my capability of answering in terms of sheer size. It's definently been proven the bigger the fan, the greater the thrust (usually). I don't know for sure if the 744ER just has more powerful engines or has the GE engines for the standard 747-400. (GE engines have to be the most powerful available on the 744, or else they would not be the only engines offered for the 744ER). I don't know always if an engine has to just be slightly modified or increased in size to generate a slight difference in thrust (say, 2,000 lbs. more per engine). I'm not sure if size plays a gigantic factor in this role. I also do not know the thrust of the GE engines on the 744ER, which makes it even more difficult for me to answer this.
Fly one thing; Fly it well
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Joined: Sat Nov 02, 2002 9:04 am


Fri Jan 23, 2004 9:48 pm

the ERs have the B5F engine with 2000lb more thrust than the 1F on the 400. KL has definitely ordered Pratt powered 744ERFs and IIRC Cargolux ordered some Rolls powered ones
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RE: 747-400ER Engine Question

Sat Jan 24, 2004 2:13 am

GE engines have to be the most powerful available on the 744, or else they would not be the only engines offered for the 744ER

Both assertions are incorrect... not only is the PW4062 available on the 744ER, but it's also the most powerful  Big grin
Faire du ciel le plus bel endroit de la terre c'est impossible sans Concorde!

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