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GE90-115B Fan Blades

QANTAS747-438 From United States of America, joined Jan 2001, 1804 posts, RR: 2
Posted (10 years 5 months 1 week 5 days 13 hours ago) and read 3820 times:

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

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Photo © Georg S.

My posts/replies are strictly my opinion and not that of any company, organization, or Southwest Airlines.

15 replies: All unread, jump to last

DC10Tony From United States of America, joined May 2001, 1012 posts, RR: 0
Reply 1, posted (10 years 5 months 1 week 5 days 12 hours ago) and read 3770 times:

For noise reduction.

Gigneil From United States of America, joined Nov 2002, 16215 posts, RR: 88
Reply 2, posted (10 years 5 months 1 week 5 days 12 hours ago) and read 3771 times:

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

Hkgspotter1 From Hong Kong, joined Nov 2005, 0 posts, RR: 1
Reply 3, posted (10 years 5 months 1 week 5 days 12 hours ago) and read 3764 times:

They burn better ?? Nuts

T prop From United States of America, joined Apr 2001, 996 posts, RR: 1
Reply 4, posted (10 years 5 months 1 week 5 days 12 hours ago) and read 3760 times:

"They burn better ??"

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

T prop.

Shaun3000 From United States of America, joined Mar 2002, 445 posts, RR: 0
Reply 5, posted (10 years 5 months 1 week 5 days 6 hours ago) and read 3726 times:

I would think so, hene the googly eyes...

AFa340-300E From France, joined May 1999, 2084 posts, RR: 28
Reply 6, posted (10 years 5 months 1 week 5 days 6 hours ago) and read 3726 times:

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 From United States of America, joined May 2001, 1012 posts, RR: 0
Reply 7, posted (10 years 5 months 1 week 5 days 3 hours ago) and read 3705 times:

"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.

Fanoftristars From United States of America, joined Jul 2000, 1573 posts, RR: 5
Reply 8, posted (10 years 5 months 1 week 4 days 23 hours ago) and read 3681 times:

They delay the onset of the blades going supersonic or something like that.

"FLY DELTA JETS"

XFSUgimpLB41X From United States of America, joined Aug 2000, 3958 posts, RR: 36
Reply 9, posted (10 years 5 months 1 week 4 days 18 hours ago) and read 3651 times:

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 From United States of America, joined Nov 2002, 16215 posts, RR: 88
Reply 10, posted (10 years 5 months 1 week 4 days 5 hours ago) and read 3598 times:

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

Cx flyboy From Hong Kong, joined Dec 1999, 6341 posts, RR: 56
Reply 11, posted (10 years 5 months 1 week 3 days 2 hours ago) and read 3512 times:

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 From United States of America, joined Nov 2002, 16215 posts, RR: 88
Reply 12, posted (10 years 5 months 1 week 2 days 15 hours ago) and read 3469 times:

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 From Hong Kong, joined Dec 1999, 6341 posts, RR: 56
Reply 13, posted (10 years 5 months 1 week 2 days 15 hours ago) and read 3476 times:

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 From United States of America, joined Nov 2002, 16215 posts, RR: 88
Reply 14, posted (10 years 5 months 1 week 2 days 4 hours ago) and read 3431 times:

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 From Canada, joined Oct 2001, 1314 posts, RR: 21
Reply 15, posted (10 years 5 months 1 week 2 days 4 hours ago) and read 3432 times:

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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