Imiakhtar From , joined Dec 1969, posts, RR: Posted (3 years 12 months 4 days 4 hours ago) and read 2836 times:
Hello folks.
A few years ago on a trip to London, I took a few pics of aircraft engines at various museums. For the life of me, I can not remember the engine models. Pics are below:
Any help in identifying them would be much appreciated.
EcuadorianMD11 From , joined Dec 1969, posts, RR: Reply 2, posted (3 years 12 months 3 days 19 hours ago) and read 2739 times:
Is it possible to tell different jet engine brands apart from a distance? For instance: Pratt & Whitneys, Rolls Royce etc? Why would an airline go for a specific brand, is this just politics between companies (regular customers getting good prizes) or ar their specific characteristics for certain brands?
I'm thinking about consumption, performance at certain altitudes, maintenance costs etc etc.
Can airports that service jet engines (for instance AMS) service all brands?
One tool fits all?
Tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80 Reply 3, posted (3 years 12 months 3 days 13 hours ago) and read 2675 times:
Quoting EcuadorianMD11 (Reply 2): Is it possible to tell different jet engine brands apart from a distance?
Sometimes. It depends on the distance, but nacelle shape (and knowing what aircraft it is) can be enough for certain engines/types.
Quoting EcuadorianMD11 (Reply 2): Why would an airline go for a specific brand, is this just politics between companies (regular customers getting good prizes) or ar their specific characteristics for certain brands?
It's not just politics. No two engines have exactly the same charachteristics...they fall on different points of the trade studies so some are better for some missions and some are better for others. Past experience in customer support and reliability goes a long way. Availability of maintenance and spares may be a deciding factor. Power-by-the-hour contracts are also a big factor. The engine purchase decision is almost as complicated as the aircraft purchase decision.
Quoting EcuadorianMD11 (Reply 2):
Can airports that service jet engines (for instance AMS) service all brands?
For line maintenance, generally yes. For heavy maintenance, it varies wildly by airport. A repair shop needs specific approval for each engine type, so it's just going to depend on what approvals the local shop has, or how many different local shops you've got.
Oly720man From United Kingdom, joined exactly 9 years ago today! , 6183 posts, RR: 11 Reply 4, posted (3 years 12 months 1 day 8 hours ago) and read 2522 times:
The bottom photo shows the RB211 and Olympus 593 at the Science museum
TEAtheB From United Kingdom, joined Aug 2005, 81 posts, RR: 0 Reply 5, posted (3 years 11 months 2 weeks 21 hours ago) and read 2148 times:
Quoting EcuadorianMD11 (Reply 2): Is it possible to tell different jet engine brands apart from a distance? For instance: Pratt & Whitneys, Rolls Royce etc?
If the aircraft is on the ground, look at which way the fan rotates. For large civil turbofans... if the fan rotates clockwise, it's a Rolls-Royce. If it goes anti-clockwise, it's P&W or GE.
Quoting EcuadorianMD11 (Reply 2): Why would an airline go for a specific brand, is this just politics between companies (regular customers getting good prizes) or ar their specific characteristics for certain brands?
DocLightning From United States of America, joined Nov 2005, 16817 posts, RR: 57 Reply 7, posted (3 years 11 months 1 week 6 days 20 hours ago) and read 2018 times:
Quoting Tdscanuck (Reply 3):
Sometimes. It depends on the distance, but nacelle shape (and knowing what aircraft it is) can be enough for certain engines/types.
An example: on the 744 the RR engines look like this:
Now, I know that in the second image they are GE engines because that is a QF bird. All QF 744's are powered by RR engines (AFAIK) UNLESS they are 744ER's. The 744ER is only available with GE powerplants (an odd decision by Boeing, IMHO, because QF was the only customer for that type). So if I see a QF bird with PW/GE-style nacelles, then I know it's a GE engine.
On the other hand, I have trouble remembering which manufacturer other airlines use. I know UA and NW use PW's and that SQ uses GE's. But I don't know who TK, VS, or LH use.
So it is SOMETIMES possible to pin down the engine type, and sometimes you need additional information. On the 787, both GE and RR engines will be externally indistinguishable, AFAIK.
Viscount724 From Switzerland, joined Oct 2006, 21465 posts, RR: 24 Reply 8, posted (3 years 11 months 1 week 6 days 19 hours ago) and read 2015 times:
Quoting DocLightning (Reply 7): All QF 744's are powered by RR engines (AFAIK) UNLESS they are 744ER's.
Close but not quite correct. QF also has two standard 744s (non-ER) acquired used from Asiana and Malaysian. They have GE engines. Those aircraft below. The ex-OZ aircraft is now in the oneworld livery..
KELPkid From United States of America, joined Nov 2005, 5932 posts, RR: 4 Reply 9, posted (3 years 11 months 1 week 6 days 18 hours ago) and read 2007 times:
Quoting DocLightning (Reply 7): I know UA and NW use PW's and that SQ uses GE's.
And if Lightsaber were around in this discussion, he would slap you silly for saying that SQ is a Pratt customer on the 744...
Celebrating the birth of KELPkidJR on August 5, 2009 :-)
VirginFlyer From New Zealand, joined Sep 2000, 4502 posts, RR: 50 Reply 10, posted (3 years 11 months 1 week 5 days 13 hours ago) and read 1917 times:
Quoting DocLightning (Reply 7): And GE and PW engines are externally identical and look like this:
If you look carefully, there are some differences between the GE and PW engines. On the PW, aft of the cowl the engine body is less tapered, then becomes more tapered, while on the GE the taper is pretty much constant. I also *believe* (but stand to be corrected) that on the GE, there is some form of vent on the right hand side of the engine, while on the PW there is a similar vent but on the left. If you look at these pictures you'll see what I mean:
Quoting Viscount724 (Reply 8): Close but not quite correct. QF also has two standard 744s (non-ER) acquired used from Asiana and Malaysian. They have GE engines. Those aircraft below. The ex-OZ aircraft is now in the oneworld livery..
Actually there are 3 GE-powered 747-400s in the Qantas fleet. In addition to VH-OEB and -OED which you have shown, there is also -OEC.
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SQ is a Pratt customer on the 744... 
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