Why a $14 M aero engine rust after all detailed analysis study and design done ?
Why a $14 M aero engine rust after all detailed analysis study and design done ?
(OP)
Why a $14 M engine rust after all detailed analysis study and design done ?
There are heaps of API and NACE standards apply on it . Correct ?
There are heaps of API and NACE standards apply on it . Correct ?

RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
Your 3rd picture shows serious damage to the engine. Why preserve broken machines?
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
An automotive exhaust is a cheap product, and it is expected to rust and be replaced easily.
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
13% Cr is barely stainless when it is unoxidized and clean.
So do you know that this turbine was cleaned, laid up and stored according to recommendations?
These are precision machines and need to be treated as such.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
No alloy is corrosion-resistant in all environments.
Just store a 13 chrome or 13-4 hydro turbine in the parking lot for a year and see what happens. (Hint: the color changes.)
"Everyone is entitled to their own opinions, but they are not entitled to their own facts."
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
No it shouldn't but then we have no idea,
How old it is
What usage it has had
What the coating is that seems to be present and coming off
what the materials are
How it was used
How it was inspected
How it was maintained
How it was stored
Whether it has had a load of grit and dirt go through it
Was it used by the seaside / morine environment but was never designed for that
When did the $14M apply - when it was bought new or now?
What is your role in all of this?
Etc etc.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
That's for the specialist to answer.
I represent the Buyer.
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
HOW MANY engines are You finding in this condition?
IF this is 'the only one' then determine what parameters were exceeded.
IF this is a trend, with several engines, then this is a critical issue that the engine OEM and the FAA/certifying agency need to resolve.
What country is this operating in.
Is the Jet fuel controlled from source-to-jet and monitored for contaminates... especially metal ions?
Did this[these?] engine[s] encounter weather or environmental sources of contamination/abrasion... like massive dust or volcanic ash... etc?
Regards, Wil Taylor
o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?
RE: Why a $14 M aero engine rust after all detailed analysis study and design done ?