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Who Will Power Newer B 747s?  
User currently offlineUnited Airline From Hong Kong, joined Jan 2001, 9160 posts, RR: 15
Posted (11 years 2 months 6 days 21 hours ago) and read 2989 times:

According to Flight International, Boeing plans to build the B 747-800, which is 50 seats more than the current B 747-400. Also, earlier they stated that they want to build the B 747-400QLR. There are some airlines that are interested.

Who will power these new proposed B 747s? Pratt and Whitney, Rolls Royce, GE all three???????? Just like the B 747-400?


14 replies: All unread, jump to last
 
User currently offlineAloges From Germany, joined Jan 2006, 8685 posts, RR: 43
Reply 1, posted (11 years 2 months 6 days 20 hours ago) and read 2911 times:

Does QLR mean Quiet Long Range?

Anyway, I assume that not "all three" will place high bets on the 747 programme for much longer, meaning that they will hardly develop entirely new engines for that aircraft. New Trent derivatives instead of the RB211 might however be viable, for example.



Walk together, talk together all ye peoples of the earth. Then, and only then, shall ye have peace.
User currently offlineMD-11 forever From , joined Dec 1969, posts, RR:
Reply 2, posted (11 years 2 months 6 days 20 hours ago) and read 2881 times:

"New Trent derivatives instead of the RB211 might however be viable, for example."

I'm sure that Rolls still has the drawings for the Trent600 (was planned for the 747 X or whatever the designator was) in the drawer, ready to pull them out when there's a need for a new 747 engine.....

Cheers, Thomas


User currently offlineAer Lingus From Ireland, joined Mar 2001, 529 posts, RR: 4
Reply 3, posted (11 years 2 months 5 days 20 hours ago) and read 2776 times:

Rolls Royce all the way! Big grin

BA LMFC Photography Group  Smile



Split Scimitar or Sharklets?
User currently offlineB747Skipper From , joined Dec 1969, posts, RR:
Reply 4, posted (11 years 2 months 5 days 18 hours ago) and read 2755 times:

Likely that the new generation 747s (if any) will still be powered with derivatives of current JT9, CF6 or RB211 type engines, these all have potential of thrust well into (I think) some 65,000 lbs thrust ratings, to power 747s into or near 1 million lbs (450 metric tons) takeoff weights... and they are proven engine technology...
(s) Skipper


User currently offlineConcordeBoy From , joined Dec 1969, posts, RR:
Reply 5, posted (11 years 2 months 5 days 13 hours ago) and read 2723 times:

According to Flight International, Boeing plans to build the B 747-800

Hmm...
747X
747-400X
747-800
747-400QLR
747-400XQLR

...five derivatives proposed in 2 years, and yet the pax model line is still going nowhere.

While I think there is some bastion of hope remaining for the pax-747 (i.e., Boeing waiting for the A388 to take flight and then reacting to its weaknesses); it seems Boeing has lost the affection they once had for the 747.


User currently offlineSAS-A321 From Denmark, joined Mar 2002, 401 posts, RR: 0
Reply 6, posted (11 years 2 months 4 days 18 hours ago) and read 2670 times:

QLR could stand for Quite a Long Range!  Big grin


It's Scandinavian
User currently offlineRendezvous From New Zealand, joined May 2001, 515 posts, RR: 0
Reply 7, posted (11 years 2 months 4 days 14 hours ago) and read 2636 times:

The trent seems like a good option.

Or maybe a new Russian engine could be given a chance?


User currently offlineConcordeBoy From , joined Dec 1969, posts, RR:
Reply 8, posted (11 years 2 months 4 days 11 hours ago) and read 2600 times:

Or maybe a new Russian engine could be given a chance?

Probably... right around when Airbus is given a chance to create a new AirForce1  Big grin


User currently offlineAussiePete From Australia, joined May 2003, 72 posts, RR: 0
Reply 9, posted (11 years 2 months 3 days 7 hours ago) and read 2524 times:

With the demand for 744 Pax variants reducing (the 777 offers much of what a 744 offered 10 years ago) there are doubts that the costs of offering numerous engine types is viable. The 744SQLR involved many changes to wing, strut and nacelles and was offered (I believe) only with GE power (sole source). Given the current split of orders/deliveries for 744 pax and to some extent F GE is leading the way. For this sort of airplane program some rationalisation is inevitable so I would expect GE to be sole source on future variants until a customer comes along who is willing to back orders for other engine types (say for example NWA ordered many airplanes with PW).

Looking at A380 and its weight issues, its low speed (to make range and payload targets), and its less than target overall performance (recognising there is still time to go) future variants of the 744 platform may become more attractive. Time will tell.


User currently offlineWomBat151 From Netherlands, joined Aug 2004, 36 posts, RR: 0
Reply 10, posted (9 years 11 months 3 weeks 2 days 13 hours ago) and read 2211 times:

At Aircraft info i saw that there will be 2 engines available for A380: The RR and the Engine Alliance PW+GE. Is this only for the A380 or also for boeing in the future?


Ian @ EHAM (AMS), 3,1NM of SPY VOR radial 205
User currently offlineDfwRevolution From United States of America, joined Jan 2010, 961 posts, RR: 51
Reply 11, posted (9 years 11 months 3 weeks 2 days 12 hours ago) and read 2196 times:

At Aircraft info i saw that there will be 2 engines available for A380: The RR and the Engine Alliance PW+GE. Is this only for the A380 or also for boeing in the future?

The Engine Alliance GP7000 can be used for 747 derrivatives and the A380 only. That was the cachet of the EU agreement for the General Electric/Pratt Whittney partnership. Boeing wanted to use the GP7000 for the 767-400ERX, but after the concept was dropped, Boeing stopped lobying for its use in this way.

Or maybe a new Russian engine could be given a chance?

Nope, not a snowball's chance in hell. Perm and others build some decent engines, but I doubt they could throw their best against the might of GE or Rolls Royce. Where would they have maintenance bases, where is their support infastructure, how would they distribute spares?

Looking at A380 and its weight issues, its low speed (to make range and payload targets), and its less than target overall performance (recognising there is still time to go) future variants of the 744 platform may become more attractive

A direct 1:1 or slight growth of the 744 might please many of the airlines who are hesitant to replace a 744 with another 744 and are worried about the risk of moving up to the A380-800. Also, a 747-Adv would look much better (on paper) than a A380-700.


User currently offlineHAWK21M From India, joined Jan 2001, 31667 posts, RR: 56
Reply 12, posted (9 years 11 months 3 weeks 1 day 19 hours ago) and read 2068 times:

Why 747-800 & not call it 747-500.Any reason.
regds
HAWK



Think of the brighter side!
User currently offlineJeffDCA From , joined Dec 1969, posts, RR:
Reply 13, posted (9 years 11 months 3 weeks 1 day 16 hours ago) and read 2034 times:

I've seen indications of a Trent 1000 derivative being used on the new 74.

Cheers,

Jeff


User currently offlineKlaus From Germany, joined Jul 2001, 21406 posts, RR: 54
Reply 14, posted (9 years 11 months 3 weeks 1 day 15 hours ago) and read 2019 times:

HAWK21M: Why 747-800 & not call it 747-500.Any reason.

The -500 and -600 were "burned" by the earlier failed proposals. I´m not certain, but I guess that the XQLR was supposed to be the -700, so that one was consumed as well.

Airbus probably won´t use the A330-500, as it was the proposed version number of the (earlier) proposed short-range derivative as far as I know. So a new potential counter-proposal to be pitched against the 7E7 would probably have to get a different number if it would still be declared a member of the A330 family...


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