QANTAS747-438
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GE90-115B Fan Blades

Sun Dec 15, 2002 12:03 pm

Why are the fan blades of the new GE90-115B so "wavy" like they are here versus normal straight blades?


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My posts/replies are strictly my opinion and not that of any company, organization, or Southwest Airlines.
 
DC10Tony
Posts: 991
Joined: Tue May 29, 2001 9:51 am

RE: GE90-115B Fan Blades

Sun Dec 15, 2002 12:36 pm

For noise reduction.
 
gigneil
Posts: 14133
Joined: Fri Nov 08, 2002 10:25 am

RE: GE90-115B Fan Blades

Sun Dec 15, 2002 12:40 pm

This has been discussed a few times in both forums recently... if you want some more detail.  Smile/happy/getting dizzy

N
 
hkgspotter1
Posts: 5750
Joined: Fri Nov 04, 2005 12:43 pm

RE: GE90-115B Fan Blades

Sun Dec 15, 2002 12:41 pm

They burn better ??  Nuts
 
T prop
Posts: 910
Joined: Tue Apr 03, 2001 4:33 pm

RE: GE90-115B Fan Blades

Sun Dec 15, 2002 12:49 pm

"They burn better ??"

What do you mean? Is this supposed to be humor?

T prop.
 
shaun3000
Posts: 439
Joined: Thu Mar 14, 2002 4:10 pm

RE: GE90-115B Fan Blades

Sun Dec 15, 2002 6:11 pm

I would think so, hene the googly eyes...
 
AFa340-300E
Posts: 2115
Joined: Tue May 18, 1999 3:49 am

RE: GE90-115B Fan Blades

Sun Dec 15, 2002 6:11 pm

Hello,


The GE90-115B's new blades are thicker, have a greater chord and provide an estimated extra 2,000lb thrust.



Best regards,
Alain Mengus
Air Transport Business [ATB]
 
DC10Tony
Posts: 991
Joined: Tue May 29, 2001 9:51 am

RE: GE90-115B Fan Blades

Sun Dec 15, 2002 9:48 pm

"They burn better ??"

People can accept you're an Airbus humper, but don't trash a plane that's superior by making stupid comments to make yourself feel better.

Now get outta here you and go watch your airplanes land, you little troll.
 
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fanoftristars
Posts: 1544
Joined: Mon Jul 17, 2000 9:03 am

RE: GE90-115B Fan Blades

Mon Dec 16, 2002 1:59 am

They delay the onset of the blades going supersonic or something like that.
"FLY DELTA JETS"
 
XFSUgimpLB41X
Posts: 3960
Joined: Fri Aug 25, 2000 1:18 am

RE: GE90-115B Fan Blades

Mon Dec 16, 2002 6:07 am

I wonder what our little friend from hong kong will say when he sees those fan blades on his beloved A380?? Tee hee.

It's similar to putting a supercritical wing shape on the fan blade. More efficient and quieter. We'll be seeing alot more of this in the future.

Airbus or Boeing..Who cares. Some people act like such little kids on this site.
Chicks dig winglets.
 
gigneil
Posts: 14133
Joined: Fri Nov 08, 2002 10:25 am

RE: GE90-115B Fan Blades

Mon Dec 16, 2002 7:34 pm

Heh DC10Tony... you don't do much better by saying he's trashing a "plane that's superior".

I think another detail that's important that's being missed is increasing the total fan blade area without widening the engine too much. It was important to ensure it was still transportable without an AN-225 or a Beluga.  Nuts

N
 
CX Flyboy
Posts: 6007
Joined: Sun Dec 26, 1999 6:10 pm

RE: GE90-115B Fan Blades

Tue Dec 17, 2002 10:34 pm

Interesting to see the blades, but I thought that they were also interested in the 'cookie cutter' trailing edges of the cowling, or was that only Rolls Royce?

As for HKGSpotters comment, I don't really think it is neccessary for you to jump all over him like that. Calling someone a troll is not really very nice at all, and just what are you saying about plane spotting? It's my favorite hobby as well, and from what I gather from your post you don't think much of it. That's fine but no need to be rude.
 
gigneil
Posts: 14133
Joined: Fri Nov 08, 2002 10:25 am

RE: GE90-115B Fan Blades

Wed Dec 18, 2002 9:40 am

I think the chevrons on the trailing edge of engines was primarily for the 747X-QLR.

I think all the existing 777 engines have sufficient noise budgets to meet specs at the concerned airports. The 747 doesn't, and if I'm not mistaken doesn't even come close.

N
 
CX Flyboy
Posts: 6007
Joined: Sun Dec 26, 1999 6:10 pm

RE: GE90-115B Fan Blades

Wed Dec 18, 2002 10:02 am

I remember seeing a Rolls Royce Trent on an AA 777 with the cookie cutter engines though, and not a 744 test engine, although I have not heard anything else since.
 
gigneil
Posts: 14133
Joined: Fri Nov 08, 2002 10:25 am

RE: GE90-115B Fan Blades

Wed Dec 18, 2002 8:09 pm

Boeing's website has a "Boeing/Rolls Royce" engine on a 744.

Its in the same pages as the 744XQLR information, if you surf to the 747 product info.

I wonder if DL and AA are unhappy that they chose Trents now that neither are planning on the 777X.

N
 
buckfifty
Posts: 1278
Joined: Tue Oct 16, 2001 4:05 pm

RE: GE90-115B Fan Blades

Wed Dec 18, 2002 8:50 pm

I was told recently that it indeed does increase thrust and reduce fuel consumption.

But if I could explain how that works, I'd be building aeroengines myself...

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