GearDownPlease From Switzerland, joined May 2007, 43 posts, RR: 0 Posted (5 years 5 months 2 weeks 7 hours ago) and read 6851 times:
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.
Tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80 Reply 2, posted (5 years 5 months 1 week 6 days 6 hours ago) and read 6742 times:
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?
Vikkyvik From United States of America, joined Jul 2003, 8231 posts, RR: 28 Reply 3, posted (5 years 5 months 1 week 6 days 1 hour ago) and read 6703 times:
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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.
"Two and a Half Men" was filmed in front of a live ostrich.
EMBQA From United States of America, joined Oct 2003, 9292 posts, RR: 13 Reply 4, posted (5 years 5 months 1 week 5 days 18 hours ago) and read 6665 times:
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"
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 !
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 . Thanks for your help.
Vikkyvik From United States of America, joined Jul 2003, 8231 posts, RR: 28 Reply 7, posted (5 years 5 months 1 week 5 days 6 hours ago) and read 6587 times:
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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.
"Two and a Half Men" was filmed in front of a live ostrich.
GearDownPlease From Switzerland, joined May 2007, 43 posts, RR: 0 Reply 9, posted (5 years 5 months 1 week 4 days 20 hours ago) and read 6519 times:
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 !
Vikkyvik From United States of America, joined Jul 2003, 8231 posts, RR: 28 Reply 11, posted (5 years 5 months 1 week 4 days 13 hours ago) and read 6478 times:
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.
"Two and a Half Men" was filmed in front of a live ostrich.
GearDownPlease From Switzerland, joined May 2007, 43 posts, RR: 0 Reply 12, posted (5 years 5 months 1 week 4 days 10 hours ago) and read 6458 times:
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.
Jetlife2 From United States of America, joined Jul 2006, 214 posts, RR: 25 Reply 13, posted (5 years 5 months 1 week 4 days 2 hours ago) and read 6411 times:
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 ( ) there is a free file viewer here
Tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80 Reply 14, posted (5 years 5 months 1 week 4 days ago) and read 6400 times:
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).
GearDownPlease From Switzerland, joined May 2007, 43 posts, RR: 0 Reply 15, posted (5 years 5 months 1 week 3 days 11 hours ago) and read 6362 times:
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 ! No, seriously speaking, many many many thanks, you're a genius, these dimensions were very important to me.
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From Switzerland, joined May 2007, 43 posts, 
From United States of America, joined Oct 2003, 9292 posts, 
From Canada, joined Jan 2006, 12709 posts, 
. Thanks for your help.
From Australia, joined Mar 2006, 2588 posts, 
) there is a free file viewer here
! No, seriously speaking, many many many thanks, you're a genius, these dimensions were very important to me.
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