ClassicLover From Ireland, joined Mar 2004, 4769 posts, RR: 22 Posted (10 years 5 months 2 weeks 4 days 13 hours ago) and read 9294 times:
Perhaps a silly question, perhaps not... I've been wondering whether to ask for a couple of weeks, and now I am!
How much does an engine cost?
From what I've read, engines appear to have an enormous life span (anyone know how long? - hell, the Conways on the VC10 are still going strong, not to mention the engines on restored Connies, or even DC-3s) and I've always wondered if the cost of engines is included in the price of an aeroplane, or if airlines buy them separately.
So, people in the know, tell all!
Thanks in advance,
I do quite enjoy a spot of flying - more so when it's not in Economy!
Trex8 From United States of America, joined Nov 2002, 5222 posts, RR: 14
Reply 3, posted (10 years 5 months 2 weeks 4 days 12 hours ago) and read 9214 times:
a new engine in the class of something like a CF6-80 etc is around about US$10 million (how do I know, because when CI chose engines for 10 747s and 12 A330s with a few spares, the cost was reportedly about 700mil for the engine contract).
RoseFlyer From United States of America, joined Feb 2004, 10387 posts, RR: 52
Reply 6, posted (10 years 5 months 2 weeks 4 days 10 hours ago) and read 9067 times:
The average cost for a BR710 or a Tay engine from Rolls Royce is about 1.8 million dollars. I found that out during a tour that I took of the Rolls Royce plant in Indianapolis that manufactures those two engines which serve business jets (including Gulfstreams, Global Express, Challenger, Citations including the CitationX) as well as the ERJ135-ERJ145 family. Rolls Royce usually tends to be the most expensive of the big 3 engine manufactures, but arguable has the most reliable product that always will meet specifications, or there will be big discounts (obviosly a Rolls Royce PR statement, but nonetheless interesting).
I didn't find out any facts about some of their bigger products, because I did not see the assembly of them. Overall the assembly of jet engines is a lot lower tech than one would assume. The Tay engines are made on a shaft that is in the middle of a room that goes up and down as individual people basically piece together the parts that they make for it. There is no assembly line or anything like that, just a lot of precise engineering going on to design and test the engine once it is "pieced" together. This process is expensive and time consuming, which makes the costs of the engines very high.
Also the development for a new engine is a huge ordeal. I also got to see the experimental lift fans for the new Joint Strike Fighter, and they have destroyed many in testing in order to fully design them. The engines are by far the most complicated part of any jet aircraft. But they are made well since they are so rigorously tested, and rarely are replaced except on very old models. Current jet engines are so well designed that they can have lives that exceed the airframes that they are placed on. If the maintenance is done correctly, the useable life of an engine is over 20 years. Maybe someone else can give actual numbers for hours of life that some engines actually get. The maintenance overhauls and spare parts are where companies like Rolls Royce make a significant amount of their money. Jetsgo just recently signed a $90 million contract with Rolls Royce for the engine servicing of the 18 Fokker 100 jets engines that they operate.
If you have never designed an airplane part before, let the real designers do the work!
Whiskeyflyer From Ireland, joined May 2002, 224 posts, RR: 0
Reply 9, posted (10 years 5 months 2 weeks 2 days 11 hours ago) and read 8540 times:
cost of engine depends on what life remaining on engine
(eg RR Spey going for about $650,000 with about 10000 cycles till next disk/moduel change, with all mandatory SB completed)
When buying an engine you look at (1) disk/module lives (how many cycles etc to change) (2) which disk/module needs changing first (hot section ie Turbine sections, move expensive than compressor sections to change as parts more expensive) (3) modification status (last thing you want to do is buy an engine and then discover a $100,000 mod due in six months)
(4) then you do a boroscope for internal engine condition (and if buying you use your good eye and if selling you use the blind NDT inspector).
Also its all down to supply and demand (if you need the engine tomorrow because a bird took out your engine and you got no spare in stock and are not part of an engine support package...... the sellers smell blood and the price goes up 50 if not 100%)