Steman From Germany, joined Aug 2000, 1480 posts, RR: 7
Reply 2, posted (8 years 5 months 2 weeks 4 days 2 hours ago) and read 3871 times:
CF6-80 are easy to spot ´cause they have a cone protruding from the nozzle
while all the PW (apart from those installed on the 777) don´t.
Just check PWs equipped A330 like Korean Air, MD11s like JAL or Swiss
and compare with GE powered A330 like Air France and MD11 like KLM
NWA, now with the largest A330 fleet in the world, has been a long-time PW customer, and has the PW4168A on all their A330's. AF has always been a die-hard GE customer, and has the CF6 on their 330's.
The best dead-giveaway I can offer, is the aft part of the engine. The CV6 has that huge spike thing (is it obvious I'm not an engineer?!?), while the PW does not. Unfortunately I don't really know how to explain it any better than that, haha.....so hopefully the pictures speak for themselves.
Transpac787 From United States of America, joined Jul 2007, 3285 posts, RR: 13
Reply 7, posted (8 years 5 months 2 weeks 4 days 2 hours ago) and read 3804 times:
Also, if you happen to know the model number ahead of time, that's how Airbus designates their planes. Boeing assigns model numbers based on the ordering customer, but Airbus assigns model numbers based on aircraft series, and then engine type.
I'm usually able to pick out different engines based on their sounds. However, the PW4000 on the A330, A300, 744, and 767 sound nearly identical during takeoff to the CF6-80 series - the fan growl is ever so slightly different; sometimes I can barely tell the difference, but usually I can't. They do sound a little different when landing, so its easier to tell which engine when spotting approaches. On the other hand, all 3 777 engines are easy to tell apart.
They're actually PW4158's. Pratt & Whitney has specific designations between aircraft types for engines. The first number designates the series.....2XXX, 4XXX, etc. The second number designates whether it is an Airbus or Boeing engine. Boeing is 0, Airbus is 1. The final two numbers designate the thrust-rating. Examples:
PW2037: 2000 series engine, for Boeing, 37k thrust rate
PW4168: 4000 series engine, for Airbus, 68k thrust rate
So, it would be "impossible" to have a PW4058 on an Airbus, it would have to be a PW4158.
Quoting Sketty222 (Reply 16): Sorry for being dim here but what does the RR engine look like compared to the other two? Does it have a pointy cone exhaust bit?
I personally find the RR motors on the A330 to be horrifically ugly, and the PW and GE engines look far better. IMO, the Trent 892 and 895 look far better, the RR's on the 777, despite having the smallest fan diameter offered on the 777.
Jacobin777 From United States of America, joined Sep 2004, 15375 posts, RR: 58
Reply 19, posted (8 years 5 months 2 weeks 3 days 22 hours ago) and read 3245 times:
Quoting PenPusher (Reply 17): Hi All
The correct name for the Pointy thing on the CF6 Engines is an AFT Centerbody, I will not bore you with the part number, don't want to be seen as a complete Geek !!
..nothing wrong with being a "geek" here...we already have a few of them and they are highly regarded and respected.
The more information which can be provided the more we learn and appreciate..
Phollingsworth From United Kingdom, joined Mar 2004, 825 posts, RR: 4
Reply 21, posted (8 years 5 months 2 weeks 3 days 21 hours ago) and read 3122 times:
Quoting Raggi (Reply 18): Correct, and if it's a MD, the number 4. Hence the PW 4462 on the MD-11 for instance.
GE does something similar on several of their engines for instance the CF6-80C2s if the 2 is followed by a B it is for Boeing, A for Airbus, D for McD. I am not sure what K is for. The GE90 is the same but there are only B models. Also on the CF6-80C2 if you see and F, e.g. B8F it is a FADEC engine
A342 From Germany, joined Jul 2005, 4927 posts, RR: 3
Reply 22, posted (8 years 5 months 2 weeks 3 days 20 hours ago) and read 3084 times:
Quoting Albird87 (Reply 5): Is there a reason why then RR makes there engines exaushts so different?? I know they look cool but is there an actual advantage to the shapes of the RRs??
Well, actually many RR engines have pointed exhausts, e.g. the Trent 500, 800, 900 and 1000. Among the RR high-bypass engines, only the Trent 700 and the RB.211-535E series as well as the RB.211-524G/H series have a "mixer nozzle". Correct me if I'm wrong!