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747-400ER Engine Question  
User currently offlineKiwi dave From New Zealand, joined Aug 2000, 895 posts, RR: 0
Posted (10 years 6 months 1 week 2 days 14 hours ago) and read 2777 times:

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?

3 replies: All unread, jump to last
 
User currently offlineThrust From United States of America, joined Sep 2003, 2688 posts, RR: 10
Reply 1, posted (10 years 6 months 1 week 2 days 13 hours ago) and read 2725 times:

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
User currently offlineTrex8 From United States of America, joined Nov 2002, 4696 posts, RR: 14
Reply 2, posted (10 years 6 months 1 week 2 days 13 hours ago) and read 2664 times:
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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

User currently offlineConcordeBoy From , joined Dec 1969, posts, RR:
Reply 3, posted (10 years 6 months 1 week 2 days 8 hours ago) and read 2495 times:

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


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