Rr Rb211-535e4 Engines

[zorsan]

Hi to everybody.
Regarding the RR RB211-535E4 Engines mounted on about 60% of the B757,does anybody knows the meaning of "211","535" and of the "E4" version?
I readt that the E4 version was a response from RR to Boeing to a P&W more efficient engine.
But these numbers have to mean something(cubic inches, diameters,something).I found nothing on the web.
Any ideas?Thank you people

[PeePeerune]

'211' -- possibly the engine rating 211kN, not def thou.

[Bullethead]

G'day Zorsan,

Have you seen this wiki article

Rolls-Royce RB211 - Wikipedia, the free encyclopedia

it appears to explain it fairly well. It looks like the numbers are just RR model and variant numbers.

Regards,
BH.

[ZeBedie]

One of the most annoying things about the internet is that if you ask a question, someone who hasn't got a clue will admit that he hasn't got a clue and then answer the question anyway

[Old Fella]

Rolls Royce RB211 series engines

The first of the RR RB211 family of engines was the -22 as fitted to the L1011 Lockheed TriStar. The engine was a development by Rolls of the first, that I know of, to have three spools. (Fan, LP Compressor, HP Compressor) all with their own Turbine sections and all on seperate shafts rotating at different RPMs. RB comes from Rolls Royce Barnoldswick where the engine was designed.

[lomapaseo]

ZeBedie

One of the most annoying things about the internet is that if you ask a question, someone who hasn't got a clue will admit that he hasn't got a clue and then answer the question anyway

Your reading is way too pedantic

My read is that a term of "not sure" doesn't mean one doesn't have a clue, but rather they do have a clue but while willing to share doesn't mean for it to be taken as gospel.

That's why we have discussion forums.

[forget]

I've often wondered why Rolls dropped the use of river names for the RB-211, unless there's a River RB-211 I've missed.

And I can understand why they ignored the River Wear.

[Chris Scott]

forget,

Perhaps names went out of fashion for grands projets in the 'Sixties? Think of the airframes, with the exception of Concord/e. Ironic, though, that their first engine without a name bankrupted the firm.

Also, as you seem to suggest, suitable unused British river names are at a premium. Ouse? Wey? Wye? Thames? Mersey?

Being French, SNECMA has a longer list to choose from.

[Storminnorm]

Or, Indeed, The river Rother?
A lot less bother with a Rother?

[flighttest-engineer]

RB211 is a family name for RR engines:
The RB211-535E4 engine is a derivative of the RB211-22B and RB211-524 engine according to the information in RR maintenance training course notes (1991).
Intersting details can also be found in "The Magic of a Name" (The Rolls-Royce Story)

• Part 2 The power behind the Jets
• Part 3 A Family of Engines

[dubh12000]

I'll give him 30 minutes.....


The E4 is a fabulous engine. On wing for something like 30kOH with Icelandair.

[EGT Redline]

RB211-535E4-37

RB - General Designation
211 - Specific Engine Type
535E4 - Engine Thrust Variation
37 - B757 Installation

[Papa2Charlie]

Just to confuse the matter even more, the newer Trent's are certified as RB211 derivatives. A Trent 700 on the A330 is certified as a RB211 Trent 772 etc. (http://www.easa.eu.int/ws_prod/c/doc...700_series.pdf).

The Trent series of engines (T500, 700, 800 & 900) are all built on the foundations of the original RB211-22 with the fan and core scaled appropriately and the incorporation of new technologies over time.

The Trent 1000 (B787) is the first of the Trent series to be certified purely as a Trent 100 and not as a RB211 derivative. The EASA Type Cert can be found here...http://www.easa.eu.int/ws_prod/c/doc...00%20FINAL.pdf

All the best,

P2C

[zorsan]

Thank You To Everybody.that S Exactly The Point Of Forums.thank You.and Yes,the E4 Is A Wonderful Engine.good Day.

[stilton]

Great Engine, the -E4B version is the best of the lot

[Papa2Charlie]

Well, the record is over 40,000hours on wing with Icelandair....

<<http://www.rolls-royce.com/civil/news/2007/icelandair_awards.jsp>>

[Mark 1]

I recollect that one of the main aims of the -535E4 over the -535C was to achieve lower noise with the long cowl design.
Noise certification wasn't the issue so much as local airport rules.
Washington National had introduced night time noise limits and Orange County (SNA) similarly was of interest to potential customers.
For a while RR had cut a march ahead of the competition by being able to beat the curfew limits.
All rather a long time in the past now, so I stand to be corrected.

[Storminnorm]

Didn't the VERY early versions of the Tristar engines have
what they called "Wide Chord" fan blades, or am I thinking
of something else?

[Mark 1]

All the -22 versions had the standard 33-blade fan I believe.
I think the very early versions (Phase00?) had clappered fans to allow different aerodynamics either side of the splitter (i.e core flow and bypass flow). They used to make an awful racket when left windmilling.

[Swedish Steve]

All the early RB211 had clapper blades. The -22B -524B and D and the 535C all had clapper blades.
The -524G/H and 535E introduced wide chord fan blades.