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cobra27
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What Happens To Old Jet Engines?

Wed Oct 22, 2014 11:00 am

I reckon that some parts that are good are used as spare parts? Or are they used in industrial (aeroderivative) turbines for power generation. Since they are made of expensive materials, they are probably recycled?
 
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litz
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RE: What Happens To Old Jet Engines?

Wed Oct 22, 2014 5:51 pm

Sometimes, they end up in someone's back yard ...

Jumbo Jet RB211-22B Backyard Run On Youtube (by CaptainKramer Oct 3 2012 in Tech Ops)
 
cobra27
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RE: What Happens To Old Jet Engines?

Thu Oct 23, 2014 10:28 am

Waw, Saw the same thing on simpsons one time
 
B6JFKH81
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RE: What Happens To Old Jet Engines?

Thu Oct 23, 2014 5:07 pm

Or they become furniture:

http://www.motoart.com/products/tables/coffee-tables

One day I hope to have many aircraft component furniture pieces in my home  
"If you do not learn from history, you are doomed to repeat it"
 
KELPkid
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RE: What Happens To Old Jet Engines?

Thu Oct 23, 2014 7:59 pm

...or they get scrapped by a very specialized scrapper that knows what all the alloys inside are and separates them out component by component to get top dollar for them. Your standard airframe recycler is not going to have access to the proper technical information from the engine manufacturer, and you can't just contaminate aircraft grade aluminum with specialized high temperature alloys from the engines  

If the engine type is still in service, I'm sure they get removed by their airlines upon being parked in the desert and/or sold to a maintenace and overhaul facility for re-use. When GA (piston) planes are scrapped, if the engine wasn't messed up in an accident, the engine gets pulled and resold (usually to homebuilders, sometimes to overhaul facilities...).
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strfyr51
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RE: What Happens To Old Jet Engines?

Thu Oct 23, 2014 9:59 pm

many times they become stationary power plants, Some were actually used to put out oil well fires after the 1st Gulf war.
It was a good Idea too! some are in Patrol Boats and even Destroyers and Frigates around the world.
 
L-188
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RE: What Happens To Old Jet Engines?

Fri Oct 24, 2014 3:46 am

As others have noted, some are parted out to be gas generators in stationary plants.

Keep in mind also a lot of times the engines are parted because of their hours limit, not the airframe hours.

You have no such limitation on a ground application.
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cobra27
Topic Author
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RE: What Happens To Old Jet Engines?

Fri Oct 24, 2014 10:16 am

Is there an hour limit?

Because I heard of Boeing 747 with more than 100000 flight hours - don't know it the engines were changed, and CFM56 that have logged around 50000 hours.

What is the typical hour limit
 
MrFord
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RE: What Happens To Old Jet Engines?

Sat Oct 25, 2014 2:25 pm

An excellent YouTube channel (AgentJayZ) is a goldmine of information about old engines converted to stationary power plants.

http://www.youtube.com/user/AgentJayZ
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spectre242
Posts: 135
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RE: What Happens To Old Jet Engines?

Sat Oct 25, 2014 8:24 pm

Quoting cobra27 (Reply 7):



There are life limits, not so much for a whole engine as such, but certainly for many of the key components contained within. Discs, blades, some of the accessories, etc will have hours or overhaul time limits, and have to be inspected or replaced at those intervals during the overhaul of a given engine for example. Times could be anything from a few hundred to several thousand hours, depending on the component, engine, age, operator (military or civil), and so on.

Often the engines would be removed from an airframe for this, and replaced by a newly overhaul engine, to reduce downtime for the airframe. Often the case in military aircraft - operators will own more engines than they have airframe capacity for. I'm not sure in commercial operations how closely and consistently they can align engine and airframe maintenance and overhaul schedules to alleviate this.
 
cobra27
Topic Author
Posts: 939
Joined: Wed May 23, 2001 6:57 pm

RE: What Happens To Old Jet Engines?

Mon Oct 27, 2014 11:30 am

Yes, but for example if components are good how many hours can you get from GE90? Which parts are tipically changed. I guess not much?

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