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DocLightning
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The Best 744 Engines

Thu Mar 15, 2012 4:47 am

So the 744 is now a mature model with well-established characteristics and a long operational history.

RR only won four orders, but they happened to be large orders from BA, QF, CX, and NZ. PW's 4000 and GE's CF6 were the other two choices.

In the end, which engine wound up being the most cost-effective overall?
-Doc Lightning-

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SASMD82
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RE: The Best 744 Engines

Thu Mar 15, 2012 10:00 am

I bet the GE80s. For their time, the engine was quite an evolution compared to the CF6-50s. They were more fuel efficient compared to the PW4000s and also made less noise.
 
CHRISBA777ER
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RE: The Best 744 Engines

Thu Mar 15, 2012 10:04 am

I'd say the GEs as well.

I've been on all three types and there is very little discernible difference in the cabin in terms of noise.

IIRC the Rolls was triple spool and had better fuel burn than the other two in cruise but being heavier was at a disadvantage in the climb.

Couldnt tell you about spool time but my reckoning is that the Pratts probably had the edge here.

Anyone know?
What do you mean you dont have any bourbon? Do you know how far it is to Houston? What kind of airline is this???
 
Speedbird741
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RE: The Best 744 Engines

Thu Mar 15, 2012 10:09 am

Quoting DocLightning (Thread starter):
large orders from BA, QF, CX, and NZ

South African Airways and Cargolux also placed significantly large orders for Rolls Royce powered -400s.

Quoting Chrisba777er (Reply 2):
IIRC the Rolls was triple spool and had better fuel burn than the other two in cruise but being heavier was at a disadvantage in the climb.

Other way around, I believe. The RB211s have an advantage during climb.

Edit -> In fact, it's quite interesting to note that, apart from Cargolux, the airlines that ordered Rolls Royce powered -400s are based in territories that were once under British rule. I'm not attempting to imply any causality, but simply noting an interesting fact.

Speedbird741

[Edited 2012-03-15 03:20:29]
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AirbusA6
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RE: The Best 744 Engines

Thu Mar 15, 2012 10:32 am

Quoting Speedbird741 (Reply 3):
Edit -> In fact, it's quite interesting to note that, apart from Cargolux, the airlines that ordered Rolls Royce powered -400s are based in territories that were once under British rule. I'm not attempting to imply any causality, but simply noting an interesting fact.

Probably not a coincidence...

It's probably fair to say that the RB211-524G powered 744 was at the limit of the engine, and indeed RR did have a joint venture with GE where they manufactured CF6s and GE got to build some RB211-535s, suggesting that they didn't see any future in the engine.

Subsequently, this accord broke up, RR developed the first Trent engines and lived happily ever after!
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CHRISBA777ER
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RE: The Best 744 Engines

Thu Mar 15, 2012 10:32 am

Quoting Speedbird741 (Reply 3):
Quoting Chrisba777er (Reply 2):
IIRC the Rolls was triple spool and had better fuel burn than the other two in cruise but being heavier was at a disadvantage in the climb.

Other way around, I believe. The RB211s have an advantage during climb.

I knew it was one of the two - my apologies.
What do you mean you dont have any bourbon? Do you know how far it is to Houston? What kind of airline is this???
 
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kc135topboom
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RE: The Best 744 Engines

Thu Mar 15, 2012 11:23 am

Doesn't the GE CF-6 have something like 50% of the B-747 and 60% of the B-767 market?
 
jfk777
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RE: The Best 744 Engines

Thu Mar 15, 2012 11:23 am

Quoting DocLightning (Thread starter):
RR only won four orders, but they happened to be large orders from BA, QF, CX, and NZ. PW's 4000 and GE's CF6 were the other two choices

Air New Zealand also has GE powered New 744's and Qantas has 6 744ER with GE engines, many QF 767 are also GE powered.

GE was the most widely used engine on 744's. LH, AF, KLM, Virgin Atlantic, Varig, ANA, JAL and other had GE on their 744's.
 
MCOflyer
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RE: The Best 744 Engines

Thu Mar 15, 2012 12:49 pm

GE followed by PW and then RR. This will be an interesting thread as could evolve into a GE vs PW argument.

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United1
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RE: The Best 744 Engines

Thu Mar 15, 2012 12:52 pm

Quoting MCOflyer (Reply 8):
GE followed by PW and then RR. This will be an interesting thread as could evolve into a GE vs PW argument.

I have always head that the PWs were lighter and did a bit better at fuel consumption as a result.
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jfk777
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RE: The Best 744 Engines

Thu Mar 15, 2012 1:15 pm

Pratts were ordered for 744 by airlines that until that point had always had P & W's on their planes, Korean Air, Singapore Airlines, NW, United & Air Canada.
 
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hOMSaR
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RE: The Best 744 Engines

Thu Mar 15, 2012 1:21 pm

It seems that most are saying the GEs were better.

One question I've wondered is, did any US airlines (Air Force One not included) ever buy GEs for a new 747 (not just -400, but any version)?

Passenger-wise, I can't think of any. But then again, I think only Pratts were offered on the early 747s (didn't the GE/RR option only become available from the -200 onward?), and most US airlines only bought the -100, or maybe a few -200s. Only NW and UA bought the -400, and they were already established PW customers.
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RE: The Best 744 Engines

Thu Mar 15, 2012 4:08 pm

I've heard that the most capable 744's in terms of range are the PW4056-equipped airplanes. Not sure how the GE's compare but due to their lighter weight the Pratt's have somewhat of a range advantage over RR-equipped aircraft.
From an exterior noise standpoint, they all seem about the same and are all rather noisy by today's standards. The RB211's seem to be the noisiest on approach.
 
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DocLightning
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RE: The Best 744 Engines

Thu Mar 15, 2012 5:39 pm

Quoting 747fan (Reply 12):
I've heard that the most capable 744's in terms of range are the PW4056-equipped airplanes. Not sure how the GE's compare but due to their lighter weight the Pratt's have somewhat of a range advantage over RR-equipped aircraft.

That's funny. I'd been told that the 3-spool design improved the thermodynamic efficiency enough that the RR could use fewer stages and thus, was a smaller, shorter, lighter engine. It's certainly smaller.
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RE: The Best 744 Engines

Thu Mar 15, 2012 5:45 pm

Quoting hOMsar (Reply 11):
One question I've wondered is, did any US airlines (Air Force One not included) ever buy GEs for a new 747 (not just -400, but any version)?

I can't think of any US airlines buying a new PAX 747 with GE engines either. Cargo-wise though we do have UPS and the GE engines on their new -400 freighters. That's the only one that comes to my mind right now though.
 
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RE: The Best 744 Engines

Thu Mar 15, 2012 6:03 pm

Quoting jfk777 (Reply 7):
Air New Zealand also has GE powered New 744's and Qantas has 6 744ER with GE engines, many QF 767 are also GE powered.

QF also had the three ex-Malaysian, non-ER 744s that were powered by GEs as well.
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lhr380
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RE: The Best 744 Engines

Thu Mar 15, 2012 6:05 pm

RB211 no doubt about it....

I love being at the threshold and hearing that spool up o a bit if power for a few seconds, and then takeoff thrust applied. Wow that noise....
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GCPET
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RE: The Best 744 Engines

Thu Mar 15, 2012 6:42 pm

Quoting lhr380 (Reply 16):
RB211 no doubt about it....

I love being at the threshold and hearing that spool up o a bit if power for a few seconds, and then takeoff thrust applied. Wow that noise....

It's a beautiful sound! Long live the RB211!

GCPET
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BoeingGuy
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RE: The Best 744 Engines

Thu Mar 15, 2012 6:43 pm

Quoting SASMD82 (Reply 1):
I bet the GE80s.

Do you call it that because it's the CF6-80C2? 777 engines are called GE90s, but I've never heard of GE80s.
 
747srule
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RE: The Best 744 Engines

Thu Mar 15, 2012 9:06 pm

No disrespect fellow A-Nutters, but any and all powerplants look excellent on the 744,because it is the best plane to EVER grace the skies!! See my user name.
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IL76
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RE: The Best 744 Engines

Thu Mar 15, 2012 9:46 pm

The PW's smoke A LOT more than the others. Even PWs on 777's. Why is that?
 
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RE: The Best 744 Engines

Thu Mar 15, 2012 11:44 pm

Am I correct in thinking that the Rolls Royce RB211 is the only engine for the 744 that has FADEC?

In my opinion the RB211 is best - partly because it looks so smooth, unlike the rougher looking GEs and P&Ws.

Rolls Royce RB211

GE CF6

Just my opinion. I know it has no bearing on operating costs.  
Quoting lhr380 (Reply 16):
RB211 no doubt about it....

I love being at the threshold and hearing that spool up o a bit if power for a few seconds, and then takeoff thrust applied. Wow that noise....

I couldn't agree more. It is such an powerful sound.
First to fly the 787-9 with Air New Zealand and ZK-NZE (2014-10-09, NZ103)
 
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RE: The Best 744 Engines

Thu Mar 15, 2012 11:59 pm

The RB211, no doubt about it. An engine so good it was strapped to 5 different aircraft models from 3 manufacturers. (6 if you include the 747SP)

I believe the USAF were considering retrofitting their B-52s with 4 RB211s each at one point.

[Edited 2012-03-15 17:00:04]
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Viscount724
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RE: The Best 744 Engines

Fri Mar 16, 2012 12:05 am

Quoting jfk777 (Reply 10):
Pratts were ordered for 744 by airlines that until that point had always had P & W's on their planes, Korean Air, Singapore Airlines, NW, United & Air Canada.



Not "always" for AC. For several years in the early 1960s (when still TCA) their entire fleet was R-R powered, including the Dart-powered Viscount, Tyne-powered Vanguard and Conway-powered DC-8-40. I recall they used to advertise their all-R-R fleet during that period. Their first P&W-powered aircraft since the DC-3 was the DC-8-54F combi in 1963.

And their Canadair DC-4M North Stars heavily used from the late 1940s until 1960 used the R-R Merlin.
 
Western727
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RE: The Best 744 Engines

Fri Mar 16, 2012 12:07 am

This is going to be a subjective, purely aesthetic response:

I was always fond of the JT9Ds on the classics; the rear cone made them aesthetically "cool" on the 747...followed by the CF6-50s and finally the relatively plain-looking RB211s that I think do the 747 classic no justice.

On the 744, I like the RRs with their pointed nose cones and yellow spirals. Always a joy to watch them taxi.
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jetmech
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RE: The Best 744 Engines

Fri Mar 16, 2012 12:29 am

Quoting BoeingGuy (Reply 18):
but I've never heard of GE80s

I think he may be using "GE80" as a shorthand for CF6-80C2.

Regards, JetMech
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DfwRevolution
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RE: The Best 744 Engines

Fri Mar 16, 2012 12:31 am

Quoting DocLightning (Reply 13):
That's funny. I'd been told that the 3-spool design improved the thermodynamic efficiency enough that the RR could use fewer stages and thus, was a smaller, shorter, lighter engine. It's certainly smaller.

The advantage of the 3-spool design is that the fan and the intermediate-pressure compressor to run at different (more optimal) speeds. All else being equal, that will result in a more efficient engine. But, decreasing the rotating diameter and stage count will cost you efficiency. Leakage flow and parasitic losses will become a greater share of the overall flow as the engine shrinks.

RR essentially made this trade-off. They earn an efficiency credit for the 3-spool design but trade it for a lighter, more compact engine. To certain customers, that is advantageous. Short/medium-haul routes benefit from the lighter engine and don't spend enough time at cruise to take a fuel burn penalty.

IMO, the 772ER exemplifies this best. The Trent-powered 772ER has a payload advantage over GE90-powered 772ERs because it is carrying something like 8,000 lbs less engine. But at long-range, the GE90 has a payload advantage over the Trent because it burns less fuel after sufficient time at cruise.
 
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RE: The Best 744 Engines

Fri Mar 16, 2012 12:32 am

Quoting zkojq (Reply 21):
Am I correct in thinking that the Rolls Royce RB211 is the only engine for the 744 that has FADEC?

No, all CF6-80C2s are FADEC on the 747-400. I'd have to check on PW, but I thought all 744s are FADEC.

(CF6-80C2s on the 767 can either be FADEC, or Non-FADEC like all of AA's birds for example; DL has some of each).
 
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RE: The Best 744 Engines

Fri Mar 16, 2012 1:23 am

Quoting garpd (Reply 22):
The RB211, no doubt about it. An engine so good it was strapped to 5 different aircraft models from 3 manufacturers. (6 if you include the 747SP)

If that's your criterion, then CF6 wins hands down.   I'm not sure how you counted. Here's what I have:

RB211:
L-1011
Early 747s (including 747SP)
767
747-400

CF6:
A300B2/B4
A310/A300-600
A330
Early 747s
767
747-400
DC-10
MD-11
 
RickNRoll
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RE: The Best 744 Engines

Fri Mar 16, 2012 1:27 am

The RB211 has been causing Qantas some problems in recent years. The reliability is not the best.
 
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DocLightning
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RE: The Best 744 Engines

Fri Mar 16, 2012 2:28 am

Quoting zkojq (Reply 21):

In my opinion the RB211 is best - partly because it looks so smooth, unlike the rougher looking GEs and P&Ws.

I actually think it looks rather anachronistic. I prefer the look of the GE/PW nacelle.

Quoting 747srule (Reply 19):
No disrespect fellow A-Nutters, but any and all powerplants look excellent on the 744,because it is the best plane to EVER grace the skies!!

Agreed!   

But my question was from the airline CEO's bottom line view, which worked out best? From what I hear, the CF6 was the best ROI.
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airbuske
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RE: The Best 744 Engines

Fri Mar 16, 2012 2:51 am

My employer is a large operator of both PW4000 and CF6-80C2 engine types. To satisfy my own curiosity, I once looked up internal data to compare fuel burn and maintenance costs for the PW4056/60 vs CF6-80C2B6F/8F. The -8F had the lowest SFC of the four engine models while the -6F had the highest. I'll try post some of the numbers tomorrow.
 
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PM
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RE: The Best 744 Engines

Fri Mar 16, 2012 2:52 am

Quoting Speedbird741 (Reply 3):
Cargolux also placed significantly large orders for Rolls Royce powered -400s

What is interesting about the CX orders is that they came after ordering and taking delivery of GE-powered 744Fs. Between 1990 and 1997 CX ordered 3 and then 1 and then 1 more 747-400F with GE. Then they switched to RR, ordering eleven between 1997 and 2006. Fascinatingly, on 2nd October 1997 they ordered 6 747s - one with GE and five with RR.

Quoting 777STL (Reply 15):
QF also had the three ex-Malaysian, non-ER 744s that were powered by GEs as well.

Two ex-MAS and one ex-Asiana.

Quoting garpd (Reply 22):
I believe the USAF were considering retrofitting their B-52s with 4 RB211s each at one point.

Not really. RR made an unsolicited bid to hang RB211s on B-52s. The USAF declined the offer.

As for the "best" engine on the 744, I am nowhere near qualified to say but the market made its preference clear. It liked GE then PW and then RR in that order.

(For the record, RR powered exactly 199 747s of all models.)
 
Speedbird741
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RE: The Best 744 Engines

Fri Mar 16, 2012 2:54 am

Quoting BoeingGuy (Reply 27):
I'd have to check on PW, but I thought all 744s are FADEC.

Presently, all three engine options have FADEC.

Quoting zkojq (Reply 21):
In my opinion the RB211 is best

Without question, the RB211s sound much better, look much better, and are just better than any other engine ever made  Obviously, I'm not being serious when I state they are better than any other engine ever constructed, but I do very much like my RB211s.

Quoting RickNRoll (Reply 29):

The RB211 has been causing Qantas some problems in recent years. The reliability is not the best.

The probability of the problem being RB211 related when, say, British Airways is doing just fine with their 250 active RB211s is quite low.

Quoting DocLightning (Reply 30):
But my question was from the airline CEO's bottom line view, which worked out best? From
what I hear, the CF6 was the best ROI.

It depends very much on other factors, such as available maintenance resources and requirements, type of operations, cost of engine itself, etc etc. For these reasons, not every airline purchased GE equipped -400s, which yields the overall lowest fuel burn per hour per (average) passenger. I unfortunately can't find more reliable documentation than the one you'll find by following the link below, but I know for a fact that, broadly speaking, the qualitative and relative descriptions in it are generally correct.

http://aerowinx.de/downloads/PlanPerf.pdf


View Large View Medium
Click here for bigger photo!

Photo © Jonathan Rankin
View Large View Medium
Click here for bigger photo!

Photo © Alexander Gill



Edit -> Please listen to this heavenly sound, and then tell me how you can prefer any engine other than the RB211 on the -400! http://www.youtube.com/watch?v=_Fe1TmPbNgA&feature=youtu.be&t=5m10s

Speedbird741

[Edited 2012-03-15 20:03:50]

[Edited 2012-03-15 20:04:01]
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Speedbird741
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RE: The Best 744 Engines

Fri Mar 16, 2012 2:59 am

Quoting PM (Reply 32):
What is interesting about the CX orders is that they came after ordering and taking delivery of GE-powered 744Fs. Between 1990 and 1997 CX ordered 3 and then 1 and then 1 more 747-400F with GE. Then they switched to RR, ordering eleven between 1997 and 2006. Fascinatingly, on 2nd October 1997 they ordered 6 747s - one with GE and five with RR.

Interesting indeed, and the case of South African Airways and their GE/RR mix is also a curious one. I do trust that you mean CV and not CX, though  

Speedbird741
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hOMSaR
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RE: The Best 744 Engines

Fri Mar 16, 2012 4:15 am

Quoting garpd (Reply 22):
The RB211, no doubt about it. An engine so good it was strapped to 5 different aircraft models from 3 manufacturers. (6 if you include the 747SP)

Boeing (747, 757, 767), Lockheed (L-1011). What was the third manufacturer?

Douglas/McD never used them. Can't think of any Airbuses with RB211s.

Also, I'm not sure how you're counting the number of aircraft models.

If you count the 747SP as its own "model" then you have to count the 747-200, 747-300 and 747-400 separately. Then the 757-200 and 757-300 each had RB211s. Some 767-300s had them (don't know about the -200).

I can't remember how many different L-1011 versions there were, but all L-10s had RB211s.

Am I missing anything?
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Speedbird741
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RE: The Best 744 Engines

Fri Mar 16, 2012 4:28 am

Quoting hOMsar (Reply 35):
Am I missing anything?

Tupolev 204/14  

Speedbird741
Boa noite Faro, Air Portugal 257 climbing flight level 340
 
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PM
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RE: The Best 744 Engines

Fri Mar 16, 2012 5:14 am

Quoting Speedbird741 (Reply 34):
I do trust that you mean CV and not CX, though

Whoops!   

Quoting Speedbird741 (Reply 34):
Interesting indeed, and the case of South African Airways and their GE/RR mix is also a curious one.

South African chose RR for their 747-400s(*). Then, about the time they were looking for more lift, Boeing had two brand new 744s with GE lying around looking for a home. They had been built for Philippines Airlines but then not delivered for some reason. SAA picked them up, presumably getting these planes sooner (and cheaper?) than if they had ordered two more with RR.

I was not best pleased.  

(*) My aging memory tells me that they originally chose PW but then changed their mind. Does anyone else remember that?

And does anyone have a distant recollection that Air India originally chose RR for their 747-400s but the deal was then overturned because of allegations of bribery?
 
SASMD82
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RE: The Best 744 Engines

Fri Mar 16, 2012 5:55 am

Quoting BoeingGuy (Reply 18):
Do you call it that because it's the CF6-80C2? 777 engines are called GE90s, but I've never heard of GE80s.

You are right, officially they are called CF6-80C2. I named them GE80 because I have always thought that the GE90s were 'nicknames' because officially they were called CF6-90-84/115b.
 
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garpd
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RE: The Best 744 Engines

Fri Mar 16, 2012 8:45 am

Quoting RickNRoll (Reply 29):
The RB211 has been causing Qantas some problems in recent years. The reliability is not the best

With QFs recent track record of maintenance, I'd rather believe it's down to the way they are maintaining them.
BA has quite a few planes with RB211s hung under their wings and are having no issues.
Countless 757s ply the sky daily with RB211s, no issues reported there.

So if QF are the only ones reporting lots of problems, you should check their MX methods for the cause.
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Dano1977
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RE: The Best 744 Engines

Fri Mar 16, 2012 11:12 am

Quoting garpd (Reply 39):
With QFs recent track record of maintenance, I'd rather believe it's down to the way they are maintaining them.
BA has quite a few planes with RB211s hung under their wings and are having no issues.
Countless 757s ply the sky daily with RB211s, no issues reported there.

So if QF are the only ones reporting lots of problems, you should check their MX methods for the cause.

QF has been sourcing out maintenance to 3rd parties, at the expense (or saving if you are looking at the bottom line) of QF Australian based engineering facilities at Avalon

But that is for a different thread.

There was an article in Flight magazine years ago about Cargolux and the RR/GE engine choices. From memory the article said something along the lines that the GE was the better engine for hot and high destinations. Rolls was better for everything else. In terms of reliability both engines were comparable.
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JerseyFlyer
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RE: The Best 744 Engines

Fri Mar 16, 2012 2:52 pm

Quoting PM (Reply 37):
And does anyone have a distant recollection that Air India originally chose RR for their 747-400s but the deal was then overturned because of allegations of bribery?

I was in India in 1990 and recall reading of AI's 'intent" to buy RR 744s. I don't recall any explanation for the subsequent change of mind.
 
Tristarsteve
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RE: The Best 744 Engines

Fri Mar 16, 2012 3:14 pm

Quoting zkojq (Reply 21):
Am I correct in thinking that the Rolls Royce RB211 is the only engine for the 744 that has FADEC?
Quoting Speedbird741 (Reply 33):
Presently, all three engine options have FADEC.

There is no FADEC on any RB211 pre Trent.
All RB211 have analogue air vent driven IGV controllers.
Just controls on air pressure differences. Same design on all RB211. Works very well.
The RB211-526 G/H on the B744 and B763 has an EEC and electrical FCU, but because this EEC does not control the IGV system, it cannot be a FADEC.

And speaking as a LAE on B744, I prefer RB211 as the gearbox is on the fancase, not buried inside the engine.

[Edited 2012-03-16 08:15:32]
 
BA777ER236
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RE: The Best 744 Engines

Fri Mar 16, 2012 8:03 pm

Quoting SASMD82 (Reply 38):
I named them GE80 because I have always thought that the GE90s were 'nicknames' because officially they were called CF6-90-84/115b.

Never heard of this and GE90 is not a nickname. They are officially GE90-115BL engines on the 777-300ER for example.

Quoting hOMsar (Reply 35):
Douglas/McD never used them. Can't think of any Airbuses with RB211s.

There was a plan to mount them on the MD11 at one time for Air Europe. I presume that you are discluding the Airbus A330 as many are powered by Trent 700s and the A340-500/600 (Trent 600) and the A380 (Trent 900) etc, the Trent being an RB211 derivative?

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RE: The Best 744 Engines

Fri Mar 16, 2012 9:19 pm

There must be a Cathay pilot out there who can weigh in?!?! They operate all three engines on their fleet of 744s, interested to hear if there is any insight from their vantage point..
 
Viscount724
Posts: 18974
Joined: Thu Oct 12, 2006 7:32 pm

RE: The Best 744 Engines

Fri Mar 16, 2012 10:09 pm

Quoting BA777ER236 (Reply 43):
Quoting SASMD82 (Reply 38):
I named them GE80 because I have always thought that the GE90s were 'nicknames' because officially they were called CF6-90-84/115b.

Never heard of this and GE90 is not a nickname. They are officially GE90-115BL engines on the 777-300ER for example.

There are no references to "CF6" in the FAA Type Certificate Data Sheet for the GE90.
http://rgl.faa.gov/Regulatory_and_Gu...6257823007a1b25/$FILE/E00049EN.pdf
 
madog
Posts: 89
Joined: Tue Nov 07, 2000 10:36 am

RE: The Best 744 Engines

Fri Mar 16, 2012 10:15 pm

Quoting dfwrevolution (Reply 26):
RR essentially made this trade-off. They earn an efficiency credit for the 3-spool design but trade it for a lighter, more compact engine. To certain customers, that is advantageous. Short/medium-haul routes benefit from the lighter engine and don't spend enough time at cruise to take a fuel burn penalty.

also on top of that, the RR's had an aerodynamic advantage compared to the PW's and GE's.
 
dynkrisolo
Posts: 1825
Joined: Mon Feb 12, 2001 12:12 am

RE: The Best 744 Engines

Fri Mar 16, 2012 10:35 pm

Quoting hOMsar (Reply 35):
Boeing (747, 757, 767), Lockheed (L-1011). What was the third manufacturer?

The -22 and -524 shared the genealogy, but the -535 on the 757 was a different animal.

Quoting Speedbird741 (Reply 36):
Tupolev 204/14

That's the same 757 engine, -535.

Quoting BA777ER236 (Reply 43):
There was a plan to mount them on the MD11 at one time for Air Europe.

Trent 600

Quoting BA777ER236 (Reply 43):
A340-500/600 (Trent 600)

Should be Trent 500
 
Stratofish
Posts: 1033
Joined: Mon Sep 24, 2001 6:38 am

RE: The Best 744 Engines

Fri Mar 16, 2012 11:24 pm

Quoting craigpc01 (Reply 44):
There must be a Cathay pilot out there who can weigh in?!?! They operate all three engines on their fleet of 744s, interested to hear if there is any insight from their vantage point..

I know they have some PW powered 744s which are ex SIA planes. Where did the GE ones come from? Must have missed that.

In both the sound and looks department the RB211 win by a very wide margin! But that's subjective, of course.

I remember having been told or read that NW chose PW simply because they had the cheapest price tag. Anyone know if that's true?
The Metro might be the Sub(optimal)way
 
5MillionMiler
Posts: 88
Joined: Thu Sep 29, 2011 2:35 am

RE: The Best 744 Engines

Sat Mar 17, 2012 12:40 am

Quoting 777STL (Reply 15):
QF also had the three ex-Malaysian, non-ER 744s that were powered by GEs as well.

Yes I rode on those a few times out of HKG and SFO and when I saw it at the gate form front thought it was a 747-400ER because form the gate the nacelles look the same ( the ER model had vents on the engines which were only visible from the side. not the gate)

I always thought the RRs looked to small on the wing and that they look sleek on the 757 or 330, but not so great on the 744 and ridiculous on the 767.

The RR RB211s on 747s are always painted either grey or a dark livery colour due to all the oil spray. That is why Qantas changed from white paint on engine pods to grey. Were tired of their engines looking like Air France! (A joke, I like Air France... just wish they would clean their beautiful planes more frequently!)

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