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777 Engine Diameter  
User currently offlineCessnapimp From Canada, joined Oct 2001, 1320 posts, RR: 18
Posted (12 years 10 months 4 days 15 hours ago) and read 4093 times:

Hello everyone,

Could anybody refer me to proof (website preferred) that the cowl diameter on the 777 is as wide as a 737- 200 fuselage. It would be much appreciated!!!


7 replies: All unread, jump to last
User currently offlineMb339 From Italy, joined Jun 2001, 238 posts, RR: 3
Reply 1, posted (12 years 10 months 4 days 15 hours ago) and read 4081 times:

On the above link there was an interesting comparison between a B737's fuselage and GE90. I tried to see the photos but it appeared not more available.

Anyway, for some technical data, try to check:


User currently offlineWilax From United States of America, joined Jun 2002, 465 posts, RR: 3
Reply 2, posted (12 years 10 months 4 days 6 hours ago) and read 4003 times:

The GE90 is way big, but the PW and RR engines look smaller in diameter and they look alike too.

User currently offlineBoeingnut From , joined Dec 1969, posts, RR:
Reply 3, posted (12 years 10 months 3 days 17 hours ago) and read 3912 times:


PW4000 112" engine

User currently offlineBio15 From Colombia, joined Mar 2001, 1089 posts, RR: 7
Reply 4, posted (12 years 10 months 3 days 10 hours ago) and read 3874 times:

"The 112-inch PW4000 also is our largest commercial engine, its diameter nearly as wide as the fuselage of a Boeing 737."


User currently offlineDC10Tony From United States of America, joined May 2001, 1012 posts, RR: 0
Reply 5, posted (12 years 10 months 2 days 21 hours ago) and read 3804 times:

The 737's interior cabin width is 11'7", so that means the exterior fuselage diameter is about 12.5' right?

If the GE90 has a 10' fan diameter, and the cowling is a little bigger, then the 777 engine isn't as big as a 737 fuselage.

I'm just comparing numbers, I've never been up close to a 777 engine in person to see its size.

User currently offlineWhiskeyflyer From Ireland, joined May 2002, 224 posts, RR: 0
Reply 6, posted (12 years 10 months 2 days ago) and read 3689 times:

PW4084, 4090, 4098 fit in the following envelope:
Diameter 119 inches length 191.7 inches
(Source Aviation Week Aerospace Source Book 2002)

User currently offlineCCA From Hong Kong, joined Oct 2002, 878 posts, RR: 14
Reply 7, posted (12 years 10 months 1 day 20 hours ago) and read 3671 times:

The GE 90 Fan is 123" so add to that the thickness of the containment ring (remember this has to contain a blade separation so it's not thin) plus the fact the EEC and Oil tank are mounted on the outside under the fan cowls so I would guess adding at least another 12-18" to either side to reach the fan cowl.
That's 147-159" (12'3"-13'3") diameter that's getting very close to the 737 fuse as DC10Tony said.

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