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SSTjumbo
Topic Author
Posts: 2579
Joined: Sun Jun 17, 2001 3:29 am

RB211 Vs. Trent

Tue Nov 13, 2001 1:51 pm

So, what are the differences? This is not in the Civ-av forum because I want a consice answer, not just that one's bigger or one's "awesomer". Is there differences in updates, fuel econ., etc.?
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kaddyuk
Posts: 3697
Joined: Thu Nov 08, 2001 1:04 am

RE: RB211 Vs. Trent

Tue Nov 13, 2001 9:47 pm

I must say that being from the UK and being that I fly the 757-200 with RB211 engines I say that I prefer the RB engine over Trent anyday. The RB is more powerful, more fuel efficient and it is built in the UK. this is why it is my choce. the only bad thing about the RB211 is that it is a noisy ba***rd I think it is one of the loudest none afterburning engine made (apart for the engines on a MD80) hope this helps.
KADDYUK
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Mr.BA
Posts: 3310
Joined: Sun Sep 24, 2000 12:26 pm

RE: RB211 Vs. Trent

Tue Nov 13, 2001 10:26 pm

Trent is not build in UK? Then where?

Thanks

alvin
Boeing747 万岁!
 
AFC_Ajax00
Posts: 739
Joined: Tue Nov 21, 2000 5:33 am

RE: RB211 Vs. Trent

Wed Nov 14, 2001 12:23 am

Pardon me if im wrong but Kaddyyuk i heard that A, the trent is built in the UK, and that the RB211 is a very quite engine especially on the 752, and the average Trent produces twice as much thrust as a RB211.
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geotrash
Posts: 293
Joined: Sun Jun 17, 2001 1:25 am

RE: RB211 Vs. Trent

Wed Nov 14, 2001 3:01 am

There seem to be several iterations of the RB211, ranging from models placed in service on the 747 in the 1970s, and the L-1011s, to the more modern variant now in service on the 757. Surely the 757 flavor has little in common with it's earlier siblings, especially noise levels and efficiency ratings, but can anyone comment on precisely what those differences are? Is it a completely new compressor or fan disk design? Or something else?
 
prebennorholm
Posts: 7043
Joined: Tue Mar 21, 2000 6:25 am

RE: RB211 Vs. Trent

Wed Nov 14, 2001 5:12 am

There are two major subtypes of the RB211 engine.

RB211-524 used on 747 and 767.
RB211-535 used on 757 and Tu-204.

The 535 is the smaller variant with several versions in the 40k lbs class while the 524 is larger with a few versions in the 60k lbs class.

Early versions of the 524 were also used on the L-1011.

Apart from size the 524 and 535 are rather similar in design.

Trent engines are surely developed from the 524 and come in five major size versions with thrust ranging from 50k to almost 100k lbs. They power the same planes plus 777 and 330 plus future planes like 340 (-500 & -600) and 380.

I recommend a look at http://www.rolls-royce.com/civil/products/turbofans/Default.htm

Can somebody explain why the RB211 is the only RR turbojet/turbofan engine which never inherited a real name from a British river?

BTW are all RR jet names as appropriate as the Avon? Some years back I had to pick up a friend at Bristol Airport, and therefore I had to drive some distance along the river Avon. That river is long, narrow and very noisy. I figured that it was no coincidense that the Avon engine got its name from that river.

Regards, Preben Norholm
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AJ
Posts: 2299
Joined: Wed Nov 03, 1999 3:54 pm

RE: RB211 Vs. Trent

Wed Nov 14, 2001 6:18 am

SSTJumbo,
A good comparison between RB211 and Trent performance can been gained by looking at the RB211-524G/H conversion to a RB211-524G/HT. This involves fitting a Trent core to the existing engine.
The biggest advantage is the in flight start envelope. The 'T' model can be started higher. When flying an aircraft with a mix of standard and modified engines the 'T' can be picked by having lower EGTs (by about 50 degrees C) and fuel flows (by about 100kg/hr).
Cheers.
 
SSTjumbo
Topic Author
Posts: 2579
Joined: Sun Jun 17, 2001 3:29 am

RE: RB211 Vs. Trent

Wed Nov 14, 2001 1:45 pm

Thanx all!!!  Smile/happy/getting dizzy
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charliecossie
Posts: 411
Joined: Wed Oct 10, 2001 5:17 am

RE: RB211 Vs. Trent

Thu Nov 15, 2001 12:46 am

Prebennorholm:

You forgot the -22B (fitted to -1, -50 and -100 Trimotors).
Although the 524 and 535 might appear to be the same engine there are really significant differences.

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