Bacardi182 From United States of America, joined Jan 2000, 1088 posts, RR: 1 Posted (13 years 2 months 3 weeks 3 days 9 hours ago) and read 754 times:
what are these cone shaped things that stick out of the back of the tail engine?
go here for a picture
http://www.airliners.net/open.file?id=68917
http://www.airliners.net/open.file?id=65148
http://www.airliners.net/open.file?id=63598
http://www.airliners.net/open.file?id=53291
notice how the cones vary in shape and size
why do some airplanes not have this cone?
http://www.airliners.net/open.file?id=57028
http://www.airliners.net/open.file?id=48607
DLMD-11 From , joined Dec 1969, posts, RR: Reply 1, posted (13 years 2 months 3 weeks 3 days 9 hours ago) and read 591 times:
YES! I know exactly what they are.
They are only found on GE powered MD-11s - and it is the way you can tell if the MD-11 you are looking at has them or not. The engine in question is the GE CF6-80C2D1F.
The PW4056 engine that powers PW powered MD-11s do not have them (look at any picture of a Delta MD-11 for example.)
The cone is merely the specifics of the design of the engine!! It adds two inches to the total length of the aircraft from 200' 11" to 201' 1".
DL_mech From United States of America, joined Feb 2000, 1761 posts, RR: 10 Reply 3, posted (13 years 2 months 3 weeks 3 days 3 hours ago) and read 546 times:
A 4056 engine is a Pratt&Whitney engine that is installed in a Boeing. A 4460 is a Douglas engine. They are all essentially the same engine except for thrust rating and they can be identified by the second number in their model. 0=Boeing, 1=Airbus, 4=McDonnellDouglas. A 4360 engine was previously built by P&W as a reciprocating engine installed in B-36s, B-50s and 377 Stratocruiser.
It's not going to the Moon.....It's just going to California
747-600X From United States of America, joined Jan 2000, 2742 posts, RR: 17 Reply 4, posted (13 years 2 months 3 weeks 3 days 3 hours ago) and read 540 times:
To actually display the pictures, just type < then PHOTOID then : then THE NUMBER of the picture then >. For anyone who doesn't want to go piling through the photos but see the aircraft mentioned,
MD-90 From United States of America, joined Jan 2000, 8418 posts, RR: 13 Reply 6, posted (13 years 2 months 3 weeks 2 days 8 hours ago) and read 514 times:
I may be wrong, but I'm pretty sure that the Delta's MD-11s are GE powered and that it's the PW engines that have the extended cone. I could be wrong, but that's what I've read. I wonder why some of the PW engines have the long cone and the others have the shorter cone? I know that you can't see the engines in these two pictures but they're my favorite Delta MD-11 pics.
DLMD-11 From , joined Dec 1969, posts, RR: Reply 8, posted (13 years 2 months 3 weeks 2 days 7 hours ago) and read 511 times:
In reality;
The majority of Delta's MD-11s are powered by the PW engine, and it is DEFINATELY the GE engine that has the cone coming out of the engines.
The only Delta MD-11s that WERE powered by GE engines were two that were in the MDC test program - they were on lease from an aviation lessor to Delta for a while, while the airline waited for the deliveries. Once they got their own, the two GE powered aircraft were returned to the lessor.
The reason that Delta got these aircraft was because they were originally destined for Air Europe (the British one) but that airline went belly up shortly before construction began on the airframes in question. Delta subsequently took the opportunity at hand to take early delivery of the new type. These planes were registered N891DL and N892DL.
The aircraft registered N801DL thru N815DL (Delta's current fifteen aircraft) are all powered by Pratt & Whitney PW4000s.
Sponsor Message: 
From United States of America, joined Jan 2000, 1088 posts, 
From , joined Dec 1969, posts, 
Printer friendly format 
