Jet-lagged
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Fourth Generation 737 To Offer IAE And CFM Engines

Sun Jun 12, 2005 10:09 pm

From here:

http://www.thisislondon.co.uk/news/b...mid401266?source=This%20is%20Money

"it is understood that Boeing engineers planning a new-generation 737, which could come into service between 2012 and 2014, believe airlines prefer a choice of two engine types."

This doesn't seem to be only 900X. Does this mean the 737NNG is gelling?


Cheers!
 
B742
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Fourth Generation 737 To Offer IAE And CFM Engines

Sun Jun 12, 2005 10:12 pm

Why not just build a 757ADV/NG as well as a 737NNG?  Confused

I know that Boeing are making the 787 to replace the 767/757 but why not make a 757ADV?

Rob!
 
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VirginFlyer
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Fourth Generation 737 To Offer IAE And CFM Engines

Sun Jun 12, 2005 10:47 pm

Quoting B742 (Reply 1):
Why not just build a 757ADV/NG as well as a 737NNG?

Because there wouldn't be any point. The 757 market will be split into two aircraft - the largest 737 or 737 relacement at one end, and the short range 787 at the other. The 757 succeeded because there was no other aircraft that could fill this gap, at least not until the mid 1990s with the advent of the A321. Now there is the A321, plus the 737-900X and the 787-3.

Boeing has made it quite clear that it wants to rationalise the number of families on offer. Five years ago, they offered 6 families (717, 737, 747, 757, 767, 777) now they are moving to 4 or maybe even 3 if they conclude that the high capcity market will be better served by 777 type aircraft than by 747 type aircraft. Resurrecting the 757 into this mix would run counter to the KISS principle - why have 3 separate types when 2 can do the job perfectly well?

On the topic of engines, this makes good sense from a sales point of view - it will make the 4th generation 737 more attractive to airlines looking to replace IAE-engined A32x family aircraft a decade from now. Airbus have demonstrated that an aircraft in this size category can have a choice of engines, so this seems like a wise move to me.

V/F

[Edited 2005-06-12 15:53:38]
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KFLLCFII
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RE: Rolls To Power New Boeing 737

Sun Jun 12, 2005 10:54 pm

Quoting Jet-lagged (Thread starter):
This doesn't seem to be only 900X. Does this mean the 737NNG is gelling?

IIRC from previous discussions, Boeing's replacement for the 737 would probably be something along the lines of a scaled-down 787. I presume Boeing would finally switch to a true EICAS, and do away with the system annunciator light panel that was left in place for 1/2/3/4/500 commonality but left the NG slightly behind the times from the start.

New name? I nominate 737-NG²
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B742
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Sun Jun 12, 2005 10:57 pm

Thanks VirginFlyer!

Quoting KFLLCFII (Reply 3):
New name? I nominate 737-NG²

I like it Big grin

Any idea on when the proposed 737NNG or 737-NG² Wink or 737ADV would be entered into service?

When does the 900X plan to enter service, if Boeing decide to build it?

Rob!
 
DfwRevolution
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Sun Jun 12, 2005 11:47 pm

Quoting Jet-lagged (Thread starter):
"it is understood that Boeing engineers planning a new-generation 737, which could come into service between 2012 and 2014, believe airlines prefer a choice of two engine types."

This doesn't seem to be only 900X. Does this mean the 737NNG is gelling?

It's been obvious for quite some time that a next-generation narrowbody would be pitched by Boeing for the 2010-2015 timeline, the writing has literally been on the wall:

1. Virtually all 737NG contracts include options that teriminate in 2012, including those signed 5 years ago and 5 months ago.

2. The "Yellowstone" plan for a completly new Boeing product line includes three products: Y1 (100-200 seats), Y2 (200-300 seats), and Y3 (300-450 seats). We know that the 787 is Y2, that's coming along, so naturally Boeing will move to Y1 or Y3.

Quoting KFLLCFII (Reply 3):
New name? I nominate 737-NG²

The name being tossed around is 737-Enhanced or 737-E

Quoting B742 (Reply 1):
Why not just build a 757ADV/NG as well as a 737NNG?

The market for a direct 757 replacement doesn't justify a stand-alone product. Since composite manufacturing could potentially allow a single aircraft family to cover everything from 90-220 seats, why bother with an orphan product? Fleet rationalization is the future.

Quoting VirginFlyer (Reply 2):
On the topic of engines, this makes good sense from a sales point of view - it will make the 4th generation 737 more attractive to airlines looking to replace IAE-engined A32x family aircraft a decade from now.

Let's make one thing clear: any engine that goes on the 737-E will be nothing like the IAE V2500/CFM56-5 and CFM56-7 flying on the A320 and 737NG. That means no CFM56-9, etc, etc.

The A320 and 737NG replacements will demand (and get) all-new engines, not modernized variants of today's engines. The GEnx is loosly based upon the Ge90, but has radical differences in technology and application. Likewise, IAE and CFM replacements will have only slight semblance to current engines.
 
DfwRevolution
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Sun Jun 12, 2005 11:58 pm

Quoting VirginFlyer (Reply 2):
Airbus have demonstrated that an aircraft in this size category can have a choice of engines, so this seems like a wise move to me.

Boeing also one-uped them in that engines can now be swapped on a common pylon, likewise a smart move considering the nature of the narrowbody market: aircraft will switch hands.

The decision to offer just the CFM56-7 for the 737NG (which is not exclusivity BTW) was made to help resale values. If an engine type can be swapped in one business day, there is little holding Boeing back from offering multiple engine types.
 
NDSchu777
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 1:41 am

My understanding is that the Y1 will be a new airplane built from scratch not just a 737 derivative.

The article posted above has been read into way too deeply. It talks about the likely possibility of having two engine manufactures on Y1 but it never specified that CFM and IAE will be those. The airplane is still in very early stages of development and it might be a few years before we hear anything for certain.

It does sound like the new engines will be quite a leap forward in the 100-200 pax market. Can't wait to see what the engine manufacturers will end up offering for the Y1 down the road.

Nick
 
ckfred
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 2:56 am

It seems to me that the 737 replacement ought to be a completely new airplane, rather that an enhanced 737.

First, as terrific as the 737 has been, it's been around since the mid-60s. At some point, Boeing needs to start with a fresh sheet of paper. I think Boeing could come up with a better airplane (i.e., lower maintenance and fuel costs) by designing a new airplane, rather than updating a very good, but older airplane.

Second, the knock on the 737 is that its cabin has a smaller diameter than the A320 series, which means narrower seats in the coach cabin. Even if Boeing could figure out how to make the 737 fuselage from composites, it would make sense to come up with a plane with a fuselage that has similar dimensions to the A320's cross section and seat widths. Also, by making the fuselage cross-section larger, the cargo volume would also increase.

Third, with a new plane, Boeing could make the cockpit more similar to the 777 or 787. A pilot friend of mine has mentioned that some of the panels on the 737NG are similar to the 737 Classics. With a more up-to-date cockpit with a layout similar to the 787 or 777, this would certainly have a positive effect on training costs.
 
Fly2HMO
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 3:18 am

Any volunteers to photoshop a 737NG and put IAE engines on it?
 
FriendlySkies
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 3:22 am

Quoting FLY2HMO:
Any volunteers to photoshop a 737NG and put IAE engines on it?

There's no way the nacelles would look the same, the 737 nacelles are specifically designed to allow enough ground clearance...
 
trident2e
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 3:35 am

Quoting Jet-lagged (Thread starter):
it is understood that Boeing engineers planning a new-generation 737, which could come into service between 2012 and 2014, believe airlines prefer a choice of two engine types

...and it's taken them 40 years to come to that conclusion?
 
atmx2000
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 3:42 am

Quoting VirginFlyer (Reply 2):
Because there wouldn't be any point. The 757 market will be split into two aircraft - the largest 737 or 737 relacement at one end, and the short range 787 at the other. The 757 succeeded because there was no other aircraft that could fill this gap, at least not until the mid 1990s with the advent of the A321. Now there is the A321, plus the 737-900X and the 787-3.



Quoting DfwRevolution (Reply 5):
2. The "Yellowstone" plan for a completly new Boeing product line includes three products: Y1 (100-200 seats), Y2 (200-300 seats), and Y3 (300-450 seats). We know that the 787 is Y2, that's coming along, so naturally Boeing will move to Y1 or Y3.

Will something fill the gap between the 737NNG and the 787-3/8 in a 2 class format? The latter is 280 pax in a 2 class format, while Y1 is up to 200 presumably in 2 class format. Will there be 762 or 753 replacement to fill the gap, and which family will provide it?
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ikramerica
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 3:58 am

good point. but the size not likely 100-200, but 120-230. I would think they must have 2 wing designs for this to work. 1 holding the lower rated engines for the 120 and 150 pax, and 1 larger one with the higher rated engines for the 170, 200, and 230 pax versions. (The 230 pax version would only be an internal design unless Boeing determined there was a real market for it, but being a single aisle plane of that size would likely mean to me that it would have limited appeal. But B would be stupid not to design for it this time around.)

Y3, a 777/747 replacement is a long way off. 2016 at earliest?
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fly_yhm
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 4:03 am

SO would it be called the 737-1000 that would be sweet
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707lvr
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 4:28 am

Does anyone else feel that the Y1 or 737-with-more-initials should instead be the 797?
 
keesje
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 4:36 am

calling it 737 serves a purpose we don´t know, but has probably something to do with marketing.
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johnnybgoode
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 4:37 am

you guys should check the current issue of Flight International magazine. It's got a very interesting article on this topic and comes with picture of what a 787-style 737 could look like (which, in fact, would be an all-new design).

rgds
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toxtethogrady
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 4:38 am

What's Boeing doing about the 70-110 seat market?
 
panam330
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 4:47 am

Quoting Fly_yhm (Reply 14):
SO would it be called the 737-1000 that would be sweet

If they even kept the 737 nameplate, which IMO would be a stupid move. An all-new aircraft shouldn't keep the same old nameplate, or it will look like it was just 'revised.' Not like an entirely new aircraft. That is, if they design it to have zero commonality with current 737 models. That said, I like the 737 nameplate- it's a classic. Also, I'd imagine that if Boeing kept the name around, it would be B737-100E, or something along those lines.
 
brons2
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 5:06 am

Quoting Toxtethogrady (Reply 18):
What's Boeing doing about the 70-110 seat market?

Leaving it to Embraer and Bombardier?
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MD80Nut
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 5:56 am

Ckfred beat me to it. Any new narrow body by Boeing should take advantage of the 787 composite technology and have a fuselage at least as wide if not wider than the A320's. I like the A320's extra width, especially when an airline takes advantage of it and gives you an extra inch of seat width, like US Airways for example.

Giving airlines an engine choice is also wise. That has worked well for the A320 family too.

Maybe they can call it the 797 or the 737-1000 series.

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larspl
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 7:25 am

they have to drop the 737 name..

many people don't know the difference between a 737-200 and a 737-800. they only see 737. i know a few people who think they flew a 30 year old 737 instead of the just deliverd -700 they were on.

a new name. marketing wise.. thats the best!
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N1120A
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 7:48 am

Quoting KFLLCFII (Reply 3):
IIRC from previous discussions, Boeing's replacement for the 737 would probably be something along the lines of a scaled-down 787. I presume Boeing would finally switch to a true EICAS, and do away with the system annunciator light panel that was left in place for 1/2/3/4/500 commonality but left the NG slightly behind the times from the start.

Not that it really matters, given that in many ways that matter, the 737NG is the most advanced aircraft in its category

Quoting DfwRevolution (Reply 5):
Quoting B742 (Reply 1):
Why not just build a 757ADV/NG as well as a 737NNG?

The market for a direct 757 replacement doesn't justify a stand-alone product. Since composite manufacturing could potentially allow a single aircraft family to cover everything from 90-220 seats, why bother with an orphan product? Fleet rationalization is the future.

The top end of the 737-E line is not only likely to cover the 220 seat range, but it is also very likely to have 757-200 or better range, meaning that it will cover both size and range. Takeoff performance will likely not be as good, unless they plan on using a 40,000 pound engine

Quoting DfwRevolution (Reply 5):
The A320 and 737NG replacements will demand (and get) all-new engines, not modernized variants of today's engines. The GEnx is loosly based upon the Ge90, but has radical differences in technology and application. Likewise, IAE and CFM replacements will have only slight semblance to current engines

While the GEnx may loosly be based on the GE90, it is a much more compact and efficient engine. After all, the GEnx is smaller than the Trent 1000 while the GE90 dwarfs the Trent 800. Any replacement for the CFM56 and the IAE V2000/2500 will incorporate the same technology as the GEnx/Trent 1000 and will be a much different engine. Also, the new engines will likely be bleedless, which will take a significant redesign anyway

Quoting Trident2e (Reply 11):
Quoting Jet-lagged (Thread starter):
it is understood that Boeing engineers planning a new-generation 737, which could come into service between 2012 and 2014, believe airlines prefer a choice of two engine types

...and it's taken them 40 years to come to that conclusion?

I guess it is still not enough that the aircraft we are talking about here is BY FAR the best selling jet powered commercial transport ever.

Quoting Toxtethogrady (Reply 18):
What's Boeing doing about the 70-110 seat market?

They are actually rather strong investors in the RRJ, which will likely have their support in any entry into the US market. Boeing's scale, much like that at Airbus, suits making larger aircraft and leaving their involvement in 70-90 seat jets as investment and engineering partners
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KennyK
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 8:17 am

I read a press report during Farnborough Airshow last year that the next generation engines being considered for narrow-bodies for service from 2012-2015 would have an even higher bypass-ration than current engines and thus a larger fan size. The main problem brought up was that the ground clearance for both the 737 and even A320 was too little and that the engines would only suit new aircraft.

Is that so or are more modest derivatives of current engines being considered?
 
N1120A
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 11:13 am

Quoting KennyK (Reply 24):
an even higher bypass-ration than current engines and thus a larger fan size. The main problem brought up was that the ground clearance for both the 737 and even A320 was too little and that the engines would only suit new aircraft.

That would create a problem, though it could be helped with the use of a cantilevered pylon like GE uses to get the GE90 on its 747
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DfwRevolution
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 12:02 pm

Quoting N1120A (Reply 25):
That would create a problem, though it could be helped with the use of a cantilevered pylon like GE uses to get the GE90 on its 747

The CFM56-3 and CFM56-7 require cantilevered pylons to fit on the 737 wing, hence the Boeing patent.

Quoting Larspl (Reply 22):
a new name. marketing wise.. thats the best!

Well duh... but you have to call a product something to get it going. Let's review the last 20 years of Boeing projects-

7E7 = 787
767-X = 777
7X7 = 767
7N7 = 757

737-E = interim name for a next-generation narrowbody

Quoting Trident2e (Reply 11):
...and it's taken them 40 years to come to that conclusion?

Cute, but you glaze over the point called: resale value
 
Ken777
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 12:37 pm

I find it hard to believe that the lessons learned on the 787 are not rapidly moving to a 737E design team. I thinking everything from wind tunnel tests to production techniques.

There would be several reasons why B would be aggressive i internally transferring technology. First, it allows them to respond very quickly if Airbus were to announce a new single aisle program - which is looking doubtful right now, but may be possible next year. Second, it allows Boeing to announce a new line if they decide it is in their strategic interests to push Airbus around a bit in this market. Third, it lets them respond if someone like WN wants to start long term planning and ordering.

At the same time I believe that Airbus has a 32E team working, but they may be a little short on engineers right now . . .
 
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yyz717
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 12:41 pm

The new Boeing narrowbody should ideally be offered in 4-5 sizes/lengths/capacities covering the 735 to 753 capacity range.
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vatveng
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 3:16 pm

Quoting Ken777 (Reply 27):
I find it hard to believe that the lessons learned on the 787 are not rapidly moving to a 737E design team.

Let's make sure it flies first. It undoubtedly will, but isn't it a bit premature to be talking about "lessons learned" on a plane that doesn't even have a complete prototype yet?
 
pilotdude09
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 4:00 pm

would this aircraft be the last in the boeing series? or do you think they can get one more 7_7 in?
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lightsaber
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RE: Fourth Generation 737 To Offer IAE And CFM Eng

Mon Jun 13, 2005 4:26 pm

Quoting DfwRevolution (Reply 6):
The decision to offer just the CFM56-7 for the 737NG (which is not exclusivity BTW) was made to help resale values.

Huh? Pratt realized that they needed to get on the 737 and Boeing quite firmly told them that CFM has an exclusive until 2008. I have no reference... But this killed the pw8133 program at Pratt.

Quoting FriendlySkies (Reply 10):
There's no way the nacelles would look the same, the 737 nacelles are specifically designed to allow enough ground clearance...

This brings up an interesting question. Will the 737-E keep the low ground clearance (easy mx) of the 737 or will ground clearance be greater to allow for much higher bypass engines? I'm not qualified to answer this as my bias would be to accommodate the engines... But I know that mx is far too critical to ignore. Having two engines is just smart. When two competitors angle for the same market, the upgrades are *much* more rapid. Not to mention it will be much easier to get lessors to buy airframes on speculation that are easily transferred.

Does anyone thing any 737-E's will be bought sans engines until the last minute when a customer is found? I do!  bigthumbsup 

Quoting Yyz717 (Reply 28):
The new Boeing narrowbody should ideally be offered in 4-5 sizes/lengths/capacities covering the 735 to 753 capacity range.

I'm for KISS. There should be two lengths and maybe a really high MTOW version for long range. Perhaps another winglet vs. swept wingtip variation? I believe the technology is ready to make a trans-Atlantic 737-E. I hope it will be done.

I'm also curious on the other compromises that will be made in the design. Will they keep a short wingspan for gate commonality or push to a longer wingspan? How wide will the cabin be? (e.g., 18.25" seats?) What size underfloor cargo?

And how many will WN order?  duck 

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N1120A
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 5:37 pm

Quoting DfwRevolution (Reply 26):
The CFM56-3 and CFM56-7 require cantilevered pylons to fit on the 737 wing, hence the Boeing patent.

Well, thank you Rev, I did not know that. Then again, at least they did not simply lash the thing to the wing on the NG like they did with the 737Classic

Quoting Lightsaber (Reply 31):
And how many will WN order?

Well, based on past history, I bet they end up with at least 200-300
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kl911
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 5:43 pm

Quoting N1120A (Reply 32):
Well, based on past history, I bet they end up with at least 200-300

That would be a killer for the 2nd hand market, if Southwest, Ryanair etc etc all dump their 737's at the same time...

KL911
 
PlanesNTrains
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 6:25 pm

Quoting KL911 (Reply 33):
That would be a killer for the 2nd hand market, if Southwest, Ryanair etc etc all dump their 737's at the same time...

Southwest isn't SQ. They won't just dump hundreds of planes for the 737E - more likely will be a gradual retirement as they reach their golden years, with the balance of the newbuilds adding capacity.

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KennyK
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 8:09 pm

I don't see Southwest or Ryanair dumping old jets, quite the opposite, both airlines seem quite happy to keep old aircraft. Ryanair still has 732s and Southwest only recently stopped flying 732s.
 
StickShaker
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 8:36 pm

...but it is also very likely to have 757-200 or better range, meaning that it will cover both size and range ...

We might see the phrase "757 capacity and performance at 737 costs"
The composite manufacturing process may permit quite a large number of different fuselage lengths than would be feasible using alloy due to the ability to vary thickness and hence strength. Wouldn't be surprised to see 4 or 5 models covering capacities of 130 to 250 seats (wouldn't expect a 100 seat model). The wing issue will be interesting - maybe a truncated 783 style wing for the smaller models - 2 separate wings is somewhat expensive. The maximum wingspan will probably be dictated by available gate sizes - major airports have been slow and reluctant to modify a few gates for the 380 - they wont modify thousands of gates for the 737E.

It does sound like the new engines will be quite a leap forward in the 100-200 pax market. Can't wait to see what the engine manufacturers will end up offering for the Y1 down the road.

Will be interesting to see how hard PW try to get their geared fan on the wing. The problems with the PW6000 and the 318 probably dont help.
Would be interested to hear what other's think of the geared fan and its application to the 737E. I understand that some of the problems are successfully lubricating and cooling the gearbox. The larger fan may also have the ground clearance issues mentioned above requiring a taller undercarriage.
Might also be difficult to offer a choice of 2 engines if one of them is the geared fan.


Cheers,
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planemaker
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 8:47 pm

Quoting DfwRevolution (Reply 5):
Let's make one thing clear: any engine that goes on the 737-E will be nothing like the IAE V2500/CFM56-5 and CFM56-7 flying on the A320 and 737NG. That means no CFM56-9, etc, etc.

Paris Air Show News
Monday June 13, 2005

CFMI launches engine technology development program

CFM International the day before the start of the Paris Air Show announced LEAP56, a program to develop the technology for a new engine to be available for use on a new generation of aircraft with entry into service as early as 2012.

CFMI Executive VP William Clapper said in Paris yesterday that meeting airlines' requirements for improvements in noise, emissions, fuel burn and maintainability is "a challenge that will require the most impressive suite of technology we've ever seen in this industry. . .a quantum leap in technology across the board." Targets are a 15% fuel burn reduction, 25% lower maintenance costs, six-year life on wing, an expected noise limit some 10-20 epndB below today's rules and emissions levels that include a 50% reduction in NOx, he said.

While stating that testing for LEAP56--for Leading Edge Aviation Propulsion--will begin on a component level in 2007, leading to testing on a system level some three years or so later, Clapper noted that the six-stage high-pressure compressor that will be going on test later this year "will be the heart of the demonstration program. . .with a higher pressure ratio than today's nine-stage HPC."

Other technologies to be explored include a resin transfer molding fan blade, lightweight engine structures, and engine accessories that will be highly reliable, low-weight, low-cost and easily maintainable, as well as a lightweight gearbox and next-generation controls with advanced engine monitoring capabilities. CFMI also will build on the success of its TAPS combustor technology to develop TAPS II for its LEAP56 effort, with special attention given NOx production levels.

Clapper said that use of GEnx technology may extend beyond TAPS and 3D aerodynamic modeling of internal components, "but beyond that it is a function of the system attributes we pick. GEnx is for a longer-range aircraft" and LEAP56 will be optimized to the shorter cycle that CFMI customers require, he told ATWOnline. While refusing to say if replacements for both the 737 and A320 lines would be more-electric aircraft, "we believe there is an advantage to a bleedless design."
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AirWillie6475
Posts: 2372
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 9:18 pm

What happened to the 3rd generation 737?
 
dan2002
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 9:48 pm

Quoting AirWillie6475 (Reply 38):
What happened to the 3rd generation 737?

1st gen, 737-100/200
2nd gen, 3/4/500
3rd gen, 6/7/8/900



-Dan
A guy asks 'What's Punk?'. I kick over a trash can and its punk. He knocks over a trash can and its trendy.
 
darkblue
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RE: Fourth Generation 737 To Offer IAE And CFM Engines

Mon Jun 13, 2005 11:21 pm

A bit off topic, but I found this comment in the article interesting:

"There could be further good news for Rolls-Royce next month after Platt confirmed that Boeing would make an announcement on whether to replace the ageing 747 with a newer, larger '747 Advanced'.

This plane would be powered with new, highly efficient engines. And with Rolls-Royce already making them for the new mediumto-large Boeing 787 ' Dreamliner', it would be in a powerful position to provide engines for the Advanced."


I think the author of this article needed to do a bit of research on the 747Adv program. Rolls Royce may be in a "powerful position" to provide engines for the 747Adv, but they won't. Boeing announced an exclusive contract with GE a couple months ago.

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