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GE Engine Orders From Korean Air  
User currently offlineJustloveplanes From United States of America, joined Jul 2004, 1030 posts, RR: 1
Posted (7 years 7 months 3 weeks 1 hour ago) and read 3859 times:

Fair use excerpt

http://biz.yahoo.com/bizj/061122/1380206.html?.v=2

Five 777-200 freighter aircraft, powered by GE90-94B engines, valued at $200 million;


This says GE90-94B instead of the GE90-110's of the LR. Is this an error, or is there a fuel economy/increased payload (lighter engine?) reason for this?

11 replies: All unread, jump to last
 
User currently offlineLTU932 From Germany, joined Jan 2006, 13864 posts, RR: 50
Reply 1, posted (7 years 7 months 3 weeks ago) and read 3792 times:

It must be an error. The 777-200F is based on the -200LR, so it should have the GE90-110B or the -115B.

User currently offlineStitch From United States of America, joined Jul 2005, 30385 posts, RR: 84
Reply 2, posted (7 years 7 months 3 weeks ago) and read 3789 times:
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Agreed. Perhaps KE's current 772ERs use the GE90-94B and that is what the writer found when they did some research?

User currently offlineAeropiggot From United States of America, joined May 2005, 283 posts, RR: 0
Reply 3, posted (7 years 7 months 3 weeks ago) and read 3764 times:

Know we know why GE is reluctant to participate in the A350-X engine program. As sole supplier on the 773ER& -200LR, why upset the money cart  dollarsign 

Look for Pratt is answer the call.



A scientist discovers that which exists, an engineer creates that which never was.
User currently offlineLTU932 From Germany, joined Jan 2006, 13864 posts, RR: 50
Reply 4, posted (7 years 7 months 3 weeks ago) and read 3751 times:

Quoting Stitch (Reply 2):
Perhaps KE's current 772ERs use the GE90-94B

I don't think so. AFAIK, KE is one of the biggest operators of PW4000 powered 777s, along with UA and maybe OZ.


User currently offlineLightsaber From United States of America, joined Jan 2005, 12771 posts, RR: 100
Reply 5, posted (7 years 7 months 2 weeks 6 days 23 hours ago) and read 3701 times:
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Quoting Justloveplanes (Thread starter):
Is this an error

Has to be an error. You need 110k or even 115k to get good payload out of the 777F. The 777F is only certified for the 124" diameter version of the GE-90, not the 118" diameter version. I don't know if its available as a 94k derate... that doesn't make sense to me...  scratchchin  Widebodyphotog, do you know if a 94k is available? What does it do to the 777F's operation envelope?

Lightsaber



Societies that achieve a critical mass of ideas achieve self sustaining growth; others stagnate.
User currently offlineOldAeroGuy From United States of America, joined Dec 2004, 3473 posts, RR: 67
Reply 6, posted (7 years 7 months 2 weeks 6 days 22 hours ago) and read 3658 times:

Quoting Lightsaber (Reply 5):
Has to be an error. You need 110k or even 115k to get good payload out of the 777F. The 777F is only certified for the 124" diameter version of the GE-90, not the 118" diameter version. I don't know if its available as a 94k derate... that doesn't make sense to me... Widebodyphotog, do you know if a 94k is available? What does it do to the 777F's operation envelope?

The GE90-110B/115B are the only engine options for the 772LR or the 777F.



Airplane design is easy, the difficulty is getting them to fly - Barnes Wallis
User currently offlineFlyDreamliner From United States of America, joined Jan 2006, 2759 posts, RR: 15
Reply 7, posted (7 years 7 months 2 weeks 6 days 22 hours ago) and read 3651 times:

That has to be a mistake. First off, there isn't much reason why you'd want a 94 over a 110 or 115, in terms of performance or economics. No one has even really ordered their 772LR will the 110 even, they all seem to go for 115. Plus, I doubt Boeing would go through the trouble of putting and certifying the smaller diameter GE90 on the 772F. It's possible, however pointless, to software de-rate a GE90-110 down to 94,000lb thrust, but it would, I'm sure, have a different model designation than the smaller fan 94k thrust GE90...

It has to be a mistake.



"Let the world change you, and you can change the world"
User currently offlineN328KF From United States of America, joined May 2004, 6483 posts, RR: 3
Reply 8, posted (7 years 7 months 2 weeks 6 days 21 hours ago) and read 3616 times:

Quoting FlyDreamliner (Reply 7):
No one has even really ordered their 772LR will the 110 even, they all seem to go for 115.

Not that it matters much...buy a -110, operate it for several months, flash the engine computer, and voila, instant -115. Same deal with SQ's 777-200ER operated at lower MTOW.



When they call the roll in the Senate, the Senators do not know whether to answer 'Present' or 'Not guilty.' T.Roosevelt
User currently offlineRaggi From Norway, joined Oct 2000, 998 posts, RR: 1
Reply 9, posted (7 years 7 months 2 weeks 6 days 21 hours ago) and read 3595 times:

Quoting Lightsaber (Reply 5):
Has to be an error. You need 110k or even 115k to get good payload out of the 777F. The 777F is only certified for the 124" diameter version of the GE-90, not the 118" diameter version.

Small correction, I believe the -110B1/ 115B fan diameter is 128", whilst the -94B and the rest are 123".

.
Surely this is just a typo by the journalist(s)

raggi



Stick & Rudder
User currently offlineWidebodyphotog From United States of America, joined Jun 1999, 917 posts, RR: 67
Reply 10, posted (7 years 7 months 2 weeks 2 days 4 hours ago) and read 3439 times:

Quoting Lightsaber (Reply 5):
Has to be an error. You need 110k or even 115k to get good payload out of the 777F. The 777F is only certified for the 124" diameter version of the GE-90, not the 118" diameter version. I don't know if its available as a 94k derate... that doesn't make sense to me... widebodyphotog, do you know if a 94k is available? What does it do to the 777F's operation envelope?

It's a blatant error, KE has selected the GE90-115B1L to power their ships as all other operators have so far...

Quoting Raggi (Reply 9):
Small correction, I believe the -110B1/ 115B fan diameter is 128", whilst the -94B and the rest are 123"

Exactly, no other fan diameters for GE90 exist.

-widebodyphotog



If you know what's really going on then you'll know what to do
User currently offlineKC135TopBoom From United States of America, joined Jan 2005, 12128 posts, RR: 52
Reply 11, posted (7 years 7 months 2 weeks 2 days 3 hours ago) and read 3415 times:

Quoting Lightsaber (Reply 5):
The 777F is only certified for the 124" diameter version of the GE-90, not the 118" diameter version.

Actually, the B-777F isn't certified for anything right now. It is only being offered by Boeing.


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