usair320
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What Engines Do The DL 757-200's Use?

Sat Aug 05, 2006 3:27 pm

I am pretty sure that they are PW's but still not quite sure. I tried www.Delta.com but they dont give any information about there fleet unlike www.AA.com or www.continental.com. any reples greatly appriciated.

Gage
 
dl757md
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RE: What Engines Do The DL 757-200's Use?

Sat Aug 05, 2006 4:06 pm

We use the PW 2037.

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HAWK21M
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RE: What Engines Do The DL 757-200's Use?

Sat Aug 05, 2006 5:34 pm


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That would be 40,100 lbs of Thrust. Right.
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MEL
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dl757md
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RE: What Engines Do The DL 757-200's Use?

Sat Aug 05, 2006 6:49 pm

Quoting HAWK21M (Reply 2):
That would be 40,100 lbs of Thrust. Right.

Nope. The PW2037 has 37,530 lbs of thrust. The PW2040 has 40,100 lbs of thrust.

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HAWK21M
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 12:14 am

Quoting Dl757md (Reply 3):
Nope. The PW2037 has 37,530 lbs of thrust. The PW2040 has 40,100 lbs of thrust.

Ok Thanks.
How do they rate with the RB211-535Cs & E4s.Maintenance wise.
regds
MEL
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usair320
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 12:27 am

Quoting Dl757md (Reply 3):
PW2037

Yea I figured they used the 37,350 version. I believe AA uses the PW2040. I should check there website. Thanks for the replys.
Gage
 
dl757md
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 1:49 am

Quoting HAWK21M (Reply 4):
How do they rate with the RB211-535Cs & E4s.Maintenance wise.

I don't have any experience with the RB211s so I can't comment firsthand. I've heard some components on the RR are harder to get to but there are probably some that are more difficult on the PW. The core engine on the RR has been more reliable AFAIK. The PW has had 14th stage stator cracking problems which PW fixed but then the 10th and 11th stage stators began cracking. It was a real problem for us as. At one point in '02 or '03 we had 16 planes grounded because we didn't have serviceable motors for them. We got really proficient at 757 engine changes because we were playing musical engines all the time. PW has since remedied the problem and no others have surfaced to date. It remains to be seen however, if the 2037 will reach the level of reliability of the RB211.

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HAWK21M
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 4:26 am

Quoting Dl757md (Reply 6):

Is it true that the P&W 2037 is Twin Spool,Unlike the RB211-535 which is Triple Spool.So would the Airflow Requirements for Ground start Volumewise be less on the Former.
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MEL
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dl757md
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 4:45 am

Quoting HAWK21M (Reply 7):
Is it true that the P&W 2037 is Twin Spool

Yes it is.

Quoting HAWK21M (Reply 7):
Unlike the RB211-535 which is Triple Spool.So would the Airflow Requirements for Ground start Volumewise be less on the Former.

I have no idea.

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EssentialPowr
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 5:19 am

Somebody pls confirm this, but I think the Rolls is ETOPs capable and the Pratt is not (unless a retrofit is done)...
 
usair320
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 5:48 am

Quoting EssentialPowr (Reply 9):
Somebody pls confirm this, but I think the Rolls is ETOPs capable and the Pratt is not (unless a retrofit is done)...

Indeed the RR's are ETOPS capable which is what CO has(correct me if im wrong) Dont know about the PW's not being ETOPS though.
 
MarkC
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 2:00 pm

The 2000's are ETOPs capable. Some of the very early build parts are not though. Its easy enough to convert most during an overhaul.
 
Lucky42
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 06, 2006 3:10 pm

Quoting Usair320 (Reply 5):
Yea I figured they used the 37,350 version. I believe AA uses the PW2040. I should check there website. Thanks for the replys.
Gage

AA 757 are Rolls Powered
 
113312
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RE: What Engines Do The DL 757-200's Use?

Mon Aug 07, 2006 1:01 am

The best sources for comparison would be AA and UPS. AA has Rolls Royce engines on all that they bought new. But, the planes that came from the TWA merger had P&W. UPS bought planes new from Boeing with both engines.
 
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HAWK21M
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RE: What Engines Do The DL 757-200's Use?

Mon Aug 07, 2006 3:46 am

Quoting Usair320 (Reply 10):
Indeed the RR's are ETOPS capable which is what CO has(correct me if im wrong) Dont know about the PW's not being ETOPS though

How does the Engine get ETOPS capability.What constitutes Engine requirements to be fullfilled for ETOPS.
regds
MEL
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tepidhalibut
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RE: What Engines Do The DL 757-200's Use?

Mon Aug 07, 2006 4:07 pm

Quoting HAWK21M (Reply 14):
How does the Engine get ETOPS capability.What constitutes Engine requirements to be fullfilled for ETOPS.

Generally speaking, from in-service reliability stats. IIRC, the aircraft basically gets 60-mins ETOPS as a matter of course, and once the fleet achieves 250,000 hrs in service, the engine can get 90-min ETOPS IF the IFSD rate is suitably low. There would be similar stats requirements for higher ETOPS ratings. ("Early ETOPS" is a completely different kettle of fish.) JAR-OPS is the set of regs you may wish to consider...

Of course, you could just have Googled for an answer....
http://en.wikipedia.org/wiki/ETOPS
 
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HAWK21M
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RE: What Engines Do The DL 757-200's Use?

Mon Aug 07, 2006 5:00 pm

Quoting TepidHalibut (Reply 15):
IF the IFSD rate is suitably low.

So On the Engines Point of View.With Regards to ETOPS only Requirement is a Good track record in terms of IFSD.

The rest lies with the Airframe.like HMG etc

regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
usair320
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RE: What Engines Do The DL 757-200's Use?

Sat Aug 19, 2006 8:47 am

Quoting Lucky42 (Reply 12):
AA 757 are Rolls Powered

Thanks. I just found that out via the website.
 
grandtheftaero
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 20, 2006 2:22 am

My understanding is that the PW2000 does not have a variable bleed system for operability. There is only a valve that opens or closes to control operating margin. Is this true?

If it is true, is the opening of this valve the loud WHOOSH sound I hear after T/R depolyment on Delta's 757s?
 
BrowntailWhale
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RE: What Engines Do The DL 757-200's Use?

Sun Aug 20, 2006 11:25 pm

UPS' Pratts are 2040s.
 
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lightsaber
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RE: What Engines Do The DL 757-200's Use?

Mon Aug 21, 2006 12:56 am

Quoting HAWK21M (Reply 4):
Ok Thanks.
How do they rate with the RB211-535Cs & E4s.Maintenance wise.

In the past, as noted, poorly. As well as the stator cracks noted by DL757md, the turbine life was only half of promise on the PW2000's initially. I'm curious to know how the "fix" is working out. The RR's for a while had 4X the turbine life of the Pratt's, but a much higher fuel burn.

Quoting MarkC (Reply 11):
The 2000's are ETOPs capable. Some of the very early build parts are not though. Its easy enough to convert most during an overhaul.

 checkmark  You seem to know your Pratt's... Welcome to my RU list.

An added benefit is the Pratt's burn a lot less fuel than the RR's. However, the RR's improved reliability helped them get into ETOPs service easier.

Quoting HAWK21M (Reply 16):
So On the Engines Point of View.With Regards to ETOPS only Requirement is a Good track record in terms of IFSD.

From the design side, its a little more than that. There is a *ell of a lot more documentation for a new ETOPs design than non-ETOPs. However, to take an existing fleet and convert it to ETOPs, its much simpler on the engine side than the airframe side. The other change for ETOPs vs. non-ETOPs is the maintenance plan. However, I would need to have an operations guy explain in more detail. We R&D weenies only worry about that when we go in to fix a problem.  Wink

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HAWK21M
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RE: What Engines Do The DL 757-200's Use?

Mon Aug 21, 2006 12:52 pm

Quoting Lightsaber (Reply 20):
There is a *ell of a lot more documentation for a new ETOPs design than non-ETOPs. However, to take an existing fleet and convert it to ETOPs

Any ETOPs Aircraft with RB211-535Cs on them.
regds
MEL
I may not win often, but I damn well never lose!!! ;)

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