The last generation of jet engines is extremely souped up. They are pimped to the limits and some of them even above, as we can see at the Trent 1000 with the uncontained failures, the PW1000G family with the uncontained failures and corrosion issues , the Leap family with the vibration issues and many others. If anything goes wrong or is a little bit outside of the expected range, the engines will start to pop in masses. Just remind, a little software change and the over-pimped PW15024G engines of the A220-300 of Swiss (and one of Tanzania air) have had also several uncontained engine failures in shortest time.
And the PW1000G family has big issues with corrosion.
Sorry for double post, but it fits here:
The first twinjet was A300. It's first flight was 1972 with around 220 kN engines.
B767 had first flight in 1981. Surprising the engines had only 210 kN. So no increase in power in these nine years. I assume Boeing chose 7 abrest to increase range versus A300.
A330 had first flight in 1992. Engines somewhere around 311 kN.
B777 had first flight 1994. Engines around 350 kN, but already one year later 410 kN.
It took 20 years for a stronger engine to enter the market. I assume engine manufacturers were more concerned with making them more reliable than with making them bigger.
Concerning pollution with the B787:
"Cracking problems in the intermediate pressure (IPT) section of the turbine have plagued the engine since early 2016, five years after its launch.
According to Horwood, the problem was caused by sulphurisation; a chemical process affecting the nickel alloy which comprises the IPT blades. “We are very confident that this problem will not occur in any of our other engines,” Horwood said. “This is confined to component level in the Trent 1000.”
The geometry around the root of the IPT blade concentrated air sucked in by the engine’s compressor system, which in some parts of the world (notably Asia) contained higher levels of sulphur-containing pollutants than the engine had been tested with. The temperatures within the IPT and some of the specialised coatings on the blade may have exacerbated the problem, Horwood said, producing air turbulence and local temperature increases that led to fatigue-like behaviour in the metal which resulted in cracking."https://www.theengineer.co.uk/rolls-roy ... rent-1000/
We know that pollution caused engine problems for B787s' Trent 1000.
Do we know that PW's engines on A320 Neos failed because of pollution or is it just an assumption? Do we have a source?
I remember as a child in Germany in the 1980s dying forest by sulfur pollution from coal power plants was a political issue. Industry argued the technology is so costly and would increase electricity prices so much that Germany won't be competitive any more. Today environmental technology is one of Germany's top export industry.
Anyway it's not like pollution was a problem centuries ago in today's rich countries.