Some engine questions
Thread Starter
Some engine questions
Hi there
Trying to finalise my notes on a few things regarding Engines on CX acft
1) Do all 747-400 pax fleet have RB211-524H-T ( I saw mentioned of CFM -56???)
2) Are these engines flat rated to 58000lbs down to 524G type
3) Are the 747-400BCF keeping the same engines and thrust rating
4) TECH Q. Does the EPR reading given in the cockpit combine both core and bypass outlet pressure ie IEPR
Answers appreciated
Trying to finalise my notes on a few things regarding Engines on CX acft
1) Do all 747-400 pax fleet have RB211-524H-T ( I saw mentioned of CFM -56???)
2) Are these engines flat rated to 58000lbs down to 524G type
3) Are the 747-400BCF keeping the same engines and thrust rating
4) TECH Q. Does the EPR reading given in the cockpit combine both core and bypass outlet pressure ie IEPR
Answers appreciated
Join Date: Sep 2003
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What I know (or don't know)...
1) Do all 747-400 pax fleet have RB211-524H-T ( I saw mentioned of CFM -56???)
I'm think that the Airbus uses the CFM56 engines, but the 400's definitely do not. The 400s either have PW4056 engines or the RB211's as you mentioned.
2) Are these engines flat rated to 58000lbs down to 524G type.
The RB211's have 58,000 lb. thrust. The PW's put out 56,750 lb.
3) Are the 747-400BCF keeping the same engines and thrust rating.
They have both engines, as mentioned above.
4) TECH Q. Does the EPR reading given in the cockpit combine both core and bypass outlet pressure ie IEPR.
Uh...I don't know. It just says EPR. There is no EPR gauge on the PW A/C.
Pogie
1) Do all 747-400 pax fleet have RB211-524H-T ( I saw mentioned of CFM -56???)
I'm think that the Airbus uses the CFM56 engines, but the 400's definitely do not. The 400s either have PW4056 engines or the RB211's as you mentioned.
2) Are these engines flat rated to 58000lbs down to 524G type.
The RB211's have 58,000 lb. thrust. The PW's put out 56,750 lb.
3) Are the 747-400BCF keeping the same engines and thrust rating.
They have both engines, as mentioned above.
4) TECH Q. Does the EPR reading given in the cockpit combine both core and bypass outlet pressure ie IEPR.
Uh...I don't know. It just says EPR. There is no EPR gauge on the PW A/C.
Pogie
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R-R has traditionally used IEPR (integrated fan duct & core duct data) - If the CX engines are different that would be a surprise!
But P&W's without EPR? can someone verify this????
But P&W's without EPR? can someone verify this????
