GearDownPlease
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GE90-110B/-115B Dimensions?

Fri Dec 14, 2007 10:20 pm

Hello,

Kayyy, I've used the "Search the Forum" function, with no sucess unfortunately.

I'm interested in knowing the external dimensions of the GE90s (including nacelle) that powers 777-200LR and -300ER versions, aka GE90-110B/-115B http://www.airliners.net/open.file/1265914/M/ .

I often read that the nacelle's external diameter is slightly larger than the 737's fuselage section but I was hoping for some more "adult" quotes, like dimensions found on station diagrams or anything detailed.

Can anybody help ?

Thanking you in advance.

Regards, Stéphane

[Edited 2007-12-14 14:22:46]
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EMBQA
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RE: GE90-110B/-115B Dimensions?

Fri Dec 14, 2007 10:39 pm

Quoting GearDownPlease (Thread starter):
Can anybody help ?

http://www.geaviation.com/........ LOADED with great information and interactive web pages.

[Edited 2007-12-14 14:44:57]
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tdscanuck
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RE: GE90-110B/-115B Dimensions?

Sat Dec 15, 2007 11:54 pm



Quoting GearDownPlease (Thread starter):
I often read that the nacelle's external diameter is slightly larger than the 737's fuselage section but I was hoping for some more "adult" quotes, like dimensions found on station diagrams or anything detailed.

This is contained in the Engine Ground Handling Manual. Which dimension are you interested in in particular?

Tom.
 
vikkyvik
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RE: GE90-110B/-115B Dimensions?

Sun Dec 16, 2007 4:38 am

If I remember correctly, the outer max diameter of a GE90 on the 777-200, 200ER, and 300 is 134 inches.

On the GE90-110/115 on the 200LR and 300ER, it's 135 inches.

This is NOT greater than the outer fuselage diameter of a 737, which is just over 12 feet, if memory serves.
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EMBQA
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RE: GE90-110B/-115B Dimensions?

Sun Dec 16, 2007 11:43 am



Quoting Vikkyvik (Reply 3):
This is NOT greater than the outer fuselage diameter of a 737, which is just over 12 feet,

The Boeing Ground Ops manual shows the 777 nacelle to be 13'-0" wide.
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
GearDownPlease
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RE: GE90-110B/-115B Dimensions?

Sun Dec 16, 2007 3:39 pm



Quoting EMBQA (Reply 1):

Hi EMBQA, thanks alot for the linky, unfortunately I already knew about the few information I found, length of 287in and max. diameter of 135in. Thing is, they speak of "max. diameter" but I believe it relates to the engine fan case and not the nacelle, which I believe is even greater, around 156in or 165in. Thanks anyway !
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GearDownPlease
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RE: GE90-110B/-115B Dimensions?

Sun Dec 16, 2007 3:46 pm



Quoting Tdscanuck (Reply 2):

Hi Tom, I was interested in the dimensions of the nacelle, mainly the max. external diameter (which I believe is either 156in or 165in), the extreme front diameter (lip of the intake), the extreme aft diameter (cold stream exaust diameter), nacelle length and, if possible, the exaust cone dimensions. Let's make it simple : the complete engine's major external dimensions  Wink . Thanks for your help.
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vikkyvik
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RE: GE90-110B/-115B Dimensions?

Sun Dec 16, 2007 11:56 pm



Quoting EMBQA (Reply 4):
The Boeing Ground Ops manual shows the 777 nacelle to be 13'-0" wide.

Ah, fair enough. My numbers were from the GE website; I never actually considered the fact that they may not take into account the nacelle. Thanks.
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jetmech
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RE: GE90-110B/-115B Dimensions?

Mon Dec 17, 2007 1:11 am



Quoting GearDownPlease (Thread starter):

Have a look at pages 12, 14, 24, 28 and 139 of this document;

http://www.boeing.com/commercial/airports/acaps/777_2lr3er.pdf

and see if you can scale the dimensions.

Regards, JetMech
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GearDownPlease
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RE: GE90-110B/-115B Dimensions?

Mon Dec 17, 2007 10:13 am

Thank you guys, though the drawings are not 100% accurate (try and change the scale to 400% and see what I mean) I found THE dimension I was looking for, on page 12, the nacelle's maximum external diameter is indeed 13ft 0in or 156in. Thanks alot !
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GearDownPlease
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RE: GE90-110B/-115B Dimensions?

Mon Dec 17, 2007 10:24 am

Huh, just checked page 15 of http://www.boeing.com/commercial/airports/acaps/777_23.pdf ("regular 777s") and found the same nacelle's maximum external diameter of 13ft 0in... I'm puzzled.
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vikkyvik
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RE: GE90-110B/-115B Dimensions?

Mon Dec 17, 2007 5:05 pm



Quoting GearDownPlease (Reply 10):
Huh, just checked page 15 of http://www.boeing.com/commercial/airports/acaps/777_23.pdf ("regular 777s") and found the same nacelle's maximum external diameter of 13ft 0in... I'm puzzled.

Why're you puzzled? From GE's website, the actual engine on 777-200/200/ER/300 is only one inch smaller in diameter than the engine on the 200LR/300ER. I'd assume that they could use the same nacelle for it with minimal changes.
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GearDownPlease
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RE: GE90-110B/-115B Dimensions?

Mon Dec 17, 2007 7:21 pm



Quoting Vikkyvik (Reply 11):
Why're you puzzled? From GE's website, the actual engine on 777-200/200/ER/300 is only one inch smaller in diameter than the engine on the 200LR/300ER. I'd assume that they could use the same nacelle for it with minimal changes.

Vikkyvik, I'm puzzled because another web site mentions a nacelle's maximum diameter of 165in or 13ft 9in. Besides, the information released from General Electric of a 1in growth is specifically related to the fan case diameter and not the nacelle.

Your assumption that such small diameter difference would lead them to use the same nacelle with minimal changes is entirely justified, the problem is that the -110B/-115B nacelle is shaped quite differently than the "regular" GE90's.

The reason I'm asking is for design/modeling purposes and those 9in of... uncertainty would make quite a difference. Thanks anyway for your inputs.
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jetlife2
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RE: GE90-110B/-115B Dimensions?

Tue Dec 18, 2007 3:27 am

I can confirm that the base GE90 (aka 94B family) and the growth GE90 (aka 115B family) have nearly identical fan case dimensions. This is by design, so that the fan stator fits in a 747F cargo door for transport. The fan rotor is quite different and so is the fan case design, being radially "slimmer" so that for an increased internal flowpath size, the external dimension is nearly the same.

Also of interest, on the same Boeing website you can download autocad files with 3 views of each aircraft. They are quoted to be accurate within 6 inches. Not for "real" use, but better than scaling from the pdf. If you don't have your copy of Autocad handy ( Smile) there is a free file viewer here

http://www.bravaviewer.com/viewers.htm

Maybe someone located in BCA or Wichita can comment more directly on the nacelle than I can.

You can also do pretty well with side view photos. Good luck.

GHR
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tdscanuck
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RE: GE90-110B/-115B Dimensions?

Tue Dec 18, 2007 5:57 am



Quoting GearDownPlease (Reply 6):
Hi Tom, I was interested in the dimensions of the nacelle, mainly the max. external diameter (which I believe is either 156in or 165in), the extreme front diameter (lip of the intake), the extreme aft diameter (cold stream exaust diameter), nacelle length and, if possible, the exaust cone dimensions. Let's make it simple : the complete engine's major external dimensions Wink

From the Engine Ground Handling Document for the GE90-100 series:
Lip of the intake: 138.3"
Max nacelle diameter: 164.4"
Cold stream exhaust diameter: 129.5"
Nacelle length (inlet to cold stream exhaust): 215"
Nacelle length (cold stream exhaust to primary exhaust nozzle): 63"
Nacelle length (primary exhaust nozzle to exhaust plug): 49.7"
Overall nacelle length: 327.7"
Exhaust plug diameter (max): 70.7"
Exhaust plug length: 72.9"

Note: you need to be careful about lengths because the inlet isn't veritical...all these dimensions are off the most forward point on the inlet (12 o'clock position).

Tom.
 
GearDownPlease
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RE: GE90-110B/-115B Dimensions?

Tue Dec 18, 2007 7:03 pm



Quoting Tdscanuck (Reply 14):
From the Engine Ground Handling Document for the GE90-100 series:
Max nacelle diameter: 164.4"

164.4in ?!?!?! Haaa, I was then 6in close, ha-haaa !!!

Quoting Tdscanuck (Reply 14):
Note: you need to be careful about lengths because the inlet isn't veritical...all these dimensions are off the most forward point on the inlet (12 o'clock position).

I'm taking note on this.

Tom, if you weren't a male, I'd have dated you  Wow! ! No, seriously speaking, many many many thanks, you're a genius, these dimensions were very important to me.

Thanks to all for your inputs.

Regards, Stéphane
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