qslinger
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Boeing 777 Engine Diameter.

Wed Apr 26, 2006 9:38 pm

Are the engine diameters(size) mounted on the Boeing 777 the same? I saw SQ 777 at Hyderabad (HYD) felt engine size looked smaller..maybe my eyes got bigger cos of the booze!!

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Cadet57
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RE: Boeing 777 Engine Diameter.

Wed Apr 26, 2006 9:49 pm

Quoting Qslinger (Thread starter):
Are the engine diameters(size) mounted on the Boeing 777 the same?

Same compared to? But look at it this way, they are the diameter of a 737 Fuselage.
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deltagator
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RE: Boeing 777 Engine Diameter.

Wed Apr 26, 2006 10:14 pm

Quoting Qslinger (Thread starter):
Are the engine diameters(size) mounted on the Boeing 777 the same?

Without looking it up I would hazard a guess that there is some size difference between the Rolls Royce engines and the GE-90s. Probably not much but the RR engines always look slimmer but longer to me. That said, as Cadet57 put it they are as wide as a 737 so they are big ass no matter what.
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Cruiser
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RE: Boeing 777 Engine Diameter.

Wed Apr 26, 2006 10:26 pm

The GE90-94B (on the 772A & 772ER) is 134 inches in diameter, while the GE90-115B (on the 773A, 773ER, 772LR) is 135 inches in diameter. Hardly noticable.

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qslinger
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RE: Boeing 777 Engine Diameter.

Wed Apr 26, 2006 10:36 pm

Quoting Cadet57 (Reply 1):
Same compared to? But look at it this way, they are the diameter of a 737 Fuselage.

As compared to the engines the other companies make for the T7. Like difference in diameter between RR, GE, etc.

P.S: Does P&W still exist?
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Cadet57
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RE: Boeing 777 Engine Diameter.

Wed Apr 26, 2006 10:48 pm

Quoting Qslinger (Reply 4):
Does P&W still exist?

yes.
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deaphen
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RE: Boeing 777 Engine Diameter.

Wed Apr 26, 2006 10:48 pm

Ok u want a better perspective.. here is the GE-90.. and there are a few miniscule people around it!  Smile

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CAL
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RE: Boeing 777 Engine Diameter.

Wed Apr 26, 2006 11:51 pm


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dalb777
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RE: Boeing 777 Engine Diameter.

Thu Apr 27, 2006 1:15 am

It appears to me that on the 772ER, GE is the biggest and RR is the smallest, with PW in the middle. The difference is only a few inches.
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AA777223
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RE: Boeing 777 Engine Diameter.

Thu Apr 27, 2006 3:12 am

I know the RR Trent 892 is only 110 inches in diameter as seen on the AA picture above, whereas the GE-90 is 135 inches. In fact the engine nacelle is, I believe, the same on GE90- 76, 94, and 115B. It is in fact the fan that is slightly larger. Because of the composite blades used in the 115b they are able to use a closer fit in the nacelle. The composites do not expand and contract near as much as titanium, or aluminum blades would. the P&W engine is 112 inches. There is therefore a fairly signifaicant difference in the ngines. In fact, I think the 777, 757 and the 747 have the most distinguishable engines differences.
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noelg
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RE: Boeing 777 Engine Diameter.

Thu Apr 27, 2006 3:39 am

GE90s are noticably larger than the RRs. For me, 777 + GE90s = one smooth looking aircraft!  Smile

SQ have Trents on theirs which is probably why you noticed the difference in size.

Cheers,
Noel
 
qslinger
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RE: Boeing 777 Engine Diameter.

Thu Apr 27, 2006 5:21 pm

Quoting Deaphen (Reply 6):
Ok u want a better perspective.. here is the GE-90.. and there are a few miniscule people around it!

I guess this pic gives a better prespective.

Big version: Width: 1600 Height: 1200 File size: 200kb
In front of the GE90 at Dubai Airshow 2005.


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FL370
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RE: Boeing 777 Engine Diameter.

Tue May 02, 2006 8:40 am

holy crap that engine is huge!!! damn!!! didn't know it was that big.
 
intothinair
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RE: Boeing 777 Engine Diameter.

Tue May 02, 2006 9:41 am

Alright, here ya go:
Trent 800: 279cm
PW4000: 294cm(as far as I know)
GE90-76-94: 312cm
GE90-110/115: 324cm

These are all the fan diameters of the 777 engines!

As a comparison, the trent 500 of the A345/A346 is 246cm, and the trent 900 of the A380 is 296cm(As far as I know)

Hope this helps

cheers, Konstantin G.
 
GQfluffy
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RE: Boeing 777 Engine Diameter.

Tue May 02, 2006 11:24 am

There's a picture floating around of a BA 772A with the GE 90 parked next to a BA 737. It was arranged so that the engine was right in front of the 737. The nacelle is bascially the same size as the 737. Swanky... Big grin
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HAWK21M
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RE: Boeing 777 Engine Diameter.

Sat May 06, 2006 6:09 am

Quoting Cadet57 (Reply 1):
Same compared to? But look at it this way, they are the diameter of a 737 Fuselage.

Only the GE90.
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EK413
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RE: Boeing 777 Engine Diameter.

Sat May 06, 2006 1:59 pm


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AA777223
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RE: Boeing 777 Engine Diameter.

Sun May 07, 2006 2:25 am

Thanks for all the posts. I think its really interesting to try and identify each engine.
The GE90 is just huge, and has the titanium leading edge blades, and they are swept if its a 110/115B
The Rolls Royce is smaller (but still huge!), and has a kind of arched sweep to them.
And the Pratts... well the pratts are unremarkable.
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AirplanePeanut
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RE: Boeing 777 Engine Diameter.

Sun May 07, 2006 4:26 am

The 777 & 737 picture...

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citationjet
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RE: Boeing 777 Engine Diameter.

Sun May 07, 2006 4:36 am

I think some people are talking about fan diameter dimensions and some are talking about external engine nacelle diameters.
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AA777223
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RE: Boeing 777 Engine Diameter.

Sun May 07, 2006 6:17 am

Why does that picture say Airnliners.net on it, if its on myaviation.net?
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MrMcCoy
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RE: Boeing 777 Engine Diameter.

Sun May 07, 2006 1:23 pm

Becuase a.net owns MyAviation, and MA is a repository for photos that don't make it past the screeners. IMO there's plenty of photos that have passed screeners that couldn't hold water to a MA shot..  Wink
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