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GE90-115B Fan Blades  
User currently offlineQANTAS747-438 From United States of America, joined Jan 2001, 1924 posts, RR: 2
Posted (11 years 7 months 2 weeks 22 hours ago) and read 4678 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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15 replies: All unread, jump to last
 
User currently offlineDC10Tony From United States of America, joined May 2001, 1012 posts, RR: 0
Reply 1, posted (11 years 7 months 2 weeks 21 hours ago) and read 4628 times:

For noise reduction.

User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 2, posted (11 years 7 months 2 weeks 21 hours ago) and read 4629 times:

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

N


User currently offlineHkgspotter1 From Hong Kong, joined Nov 2005, 0 posts, RR: 0
Reply 3, posted (11 years 7 months 2 weeks 21 hours ago) and read 4622 times:

They burn better ??  Nuts

User currently offlineT prop From United States of America, joined Apr 2001, 1023 posts, RR: 1
Reply 4, posted (11 years 7 months 2 weeks 21 hours ago) and read 4618 times:

"They burn better ??"

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

T prop.


User currently offlineShaun3000 From United States of America, joined Mar 2002, 445 posts, RR: 0
Reply 5, posted (11 years 7 months 2 weeks 16 hours ago) and read 4584 times:

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

User currently offlineAFa340-300E From France, joined May 1999, 2084 posts, RR: 26
Reply 6, posted (11 years 7 months 2 weeks 16 hours ago) and read 4584 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]


User currently offlineDC10Tony From United States of America, joined May 2001, 1012 posts, RR: 0
Reply 7, posted (11 years 7 months 2 weeks 12 hours ago) and read 4563 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.


User currently offlineFanoftristars From United States of America, joined Jul 2000, 1604 posts, RR: 5
Reply 8, posted (11 years 7 months 2 weeks 8 hours ago) and read 4539 times:

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


"FLY DELTA JETS"
User currently offlineXFSUgimpLB41X From United States of America, joined Aug 2000, 4190 posts, RR: 37
Reply 9, posted (11 years 7 months 2 weeks 4 hours ago) and read 4509 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.
User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 10, posted (11 years 7 months 1 week 6 days 14 hours ago) and read 4456 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

N


User currently offlineCx flyboy From Hong Kong, joined Dec 1999, 6583 posts, RR: 55
Reply 11, posted (11 years 7 months 1 week 5 days 11 hours ago) and read 4370 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.


User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 12, posted (11 years 7 months 1 week 5 days ago) and read 4327 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


User currently offlineCx flyboy From Hong Kong, joined Dec 1999, 6583 posts, RR: 55
Reply 13, posted (11 years 7 months 1 week 5 days ago) and read 4334 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.

User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 14, posted (11 years 7 months 1 week 4 days 14 hours ago) and read 4289 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


User currently offlineBuckfifty From Canada, joined Oct 2001, 1316 posts, RR: 20
Reply 15, posted (11 years 7 months 1 week 4 days 13 hours ago) and read 4290 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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