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How Much More Evolved Will The 737 Become....Part2  
User currently offlineODwyerPW From Mexico, joined Dec 2004, 853 posts, RR: 2
Posted (4 years 7 months 3 weeks 5 days 14 hours ago) and read 3162 times:

the original thread was archived...too bad....as it was an interesting discussion....just died during the holidays and all of the recent news 787,747-8,A400 development/flight tests.
How Much More Evolved Will The 737 Become? (by C5LOAD Oct 26 2009 in Civil Aviation)

Found an interesting article today about the CFM56-7E (evolution) process.... compliments flight global:

"The CFM56-7BE engine has 9% fewer aerofoils as well as reshaped blades and vanes in the high- and low-pressure turbines to increase airflow through the engine and reduce operating temperatures. Combined with Boeing-designed modifications to the engine nozzle and plug, the engine will deliver 1% improvement in specific fuel consumption and 4% less maintenance costs. For the airframe in total, Boeing is advertising a 2% decrease in fuel consumption.

Boeing programs director at CFM Kris Shepherd says engineers are "trying to overshoot" the 1% target for the engine "a little bit to get some margin". In-flight data on the new engine will be available soon, as CFM 50/50 partner GE plans to begin flying a prototype on its 747-100 testbed in the US in February. Tests are expected to be complete in March, after which Boeing will begin testing the -7BE for the US Navy's P-8A Poseidon application, a variant of the Boeing 737-800."

What is of interest is the article discussed Airbus interest in similar modifcations for the CFM56-5B core that powers the A320. Signs that both manufactures will continue to 'evolve' their narrowbody platforms, rather than launch entirely new plane anytime soon.


Quiero una vida simple en Mexico. Nada mas.
5 replies: All unread, jump to last
 
User currently offlineODwyerPW From Mexico, joined Dec 2004, 853 posts, RR: 2
Reply 1, posted (4 years 7 months 3 weeks 5 days 14 hours ago) and read 3159 times:

Thought it would be fair to quote the FlightGlobal article:
http://www.flightglobal.com/articles...cific-variant-of-cfm56-engine.html



Quiero una vida simple en Mexico. Nada mas.
User currently offlinePlanemaker From Tuvalu, joined Aug 2003, 6146 posts, RR: 35
Reply 2, posted (4 years 7 months 3 weeks 5 days ago) and read 2950 times:



Quoting ODwyerPW (Thread starter):
What is of interest is the article discussed Airbus interest in similar modifcations for the CFM56-5B core that powers the A320. Signs that both manufactures will continue to 'evolve' their narrowbody platforms, rather than launch entirely new plane anytime soon.

Also don't forget that CFM has launched the Leap-X on the COMAC C919.

CFM ready to advance LEAP-X schedule; opens way for 737RE

http://www.flightglobal.com/articles...leap-x-schedule-opens-way-for.html



Nationalism is an infantile disease. It is the measles of mankind. - A. Einstein
User currently offlineParapente From United Kingdom, joined Mar 2006, 1565 posts, RR: 10
Reply 3, posted (4 years 7 months 3 weeks 4 days 20 hours ago) and read 2834 times:

LEAP-X is really what it's all about.Both manufacturers have stated that they will go public on their intensions regarding the re engine of the two existing types.Now that Leap-x have brought forward their plans (re 919) to have an engine ready for 919 test flights by 2014 I would say that it's a racing certainty that both A&B will re engine to this time scale.Note the fan diameter removes the need for major structural undercarriage change.

The existing already announced improvements will be brought in over the next 4 years.Whether this be a new interior, small"tweeks" or in the case of Airbus Blended "Sharklets". After this the last huge improvement (we are talking a full 16% according to Cfm) will be incorporated.This "final" set of aircraft will be sold for a decade prior to the all new aircraft,which in all liklehood will be totally different (carbon) and based round open rotor engines (it will need to to offer a full further 15% plus gain on the re-engined existing offering).

Whilst I hope that Bombardier and others are very successfull with their new 100-120 seat aircraft (its quite a large market these days).Such a development (Leap-x) will ensure that they will not be able to encroach on A&B's traditional existing market. Nor will the Chinese garner many orders outside their own boarders with the 919.


User currently offlinePlanemaker From Tuvalu, joined Aug 2003, 6146 posts, RR: 35
Reply 4, posted (4 years 7 months 3 weeks 4 days 10 hours ago) and read 2632 times:



Quoting Parapente (Reply 3):
which in all liklehood will be totally different (carbon) and based round open rotor engines (it will need to to offer a full further 15% plus gain on the re-engined existing offering).

Now with Leap_X moving forward earlier, the previous time frame that A & B have given for an all-new NB... 2022-2024,might move out and give time, crucial time, to the possibility that that they might go with some sort of BWB design, or some design incorporating BWB elements.

Quoting Parapente (Reply 3):
Whilst I hope that Bombardier and others are very successfull with their new 100-120 seat aircraft (its quite a large market these days).Such a development (Leap-x) will ensure that they will not be able to encroach on A&B's traditional existing market.

Well, just the CFM56-7BE engine will be a thorn, let alone the Leap-X. There could be a lot of inexpensive older frames that could be upgraded relatively inexpensively compared to buying all -new aircraft.



Nationalism is an infantile disease. It is the measles of mankind. - A. Einstein
User currently offlineOdwyerpw From Mexico, joined Dec 2004, 853 posts, RR: 2
Reply 5, posted (4 years 7 months 3 weeks 4 days 5 hours ago) and read 2530 times:

the problem i have with the article about Leap-x accleration...is that.

they will do it for launch of comac 919.....but won't accelerate it to re-engine the most 2nd most popular airframe of all time (DC-3 being #1)?

don't really see CFM partners saying...Hey we will through resouces at the Leap-X program to support the 919 startup if we are selected.....but are going to maintain the status quo for bluechip programs like the A320advanced and 737RE (re-engine). silly premise.



Quiero una vida simple en Mexico. Nada mas.
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