How Long To Develop A Jet Engine...

[gambit]

This is not exactly a military issue, but it is directly related to the military in many ways...

Pratt’s PurePower GTF: Jet Engine Innovation Took Almost 30 Years - Bloomberg Business

Pratt & Whitney’s new PurePower Geared Turbofan aircraft engines are impressive beasts. Scheduled to enter commercial service before the end of the year,...

Sounds like a typical sales pitch. Nothing unusual there.

...what may be most remarkable about the engines is that they took almost 30 years to develop.

Say what...???

...it required the cooperation of hundreds of engineers across the company, a $10 billion investment commitment from management, and, above all, the buy-in of aircraft makers and airlines, which had to be convinced that the engine would be both safe and durable.

Granted, this is a product that is intended for widespread adoption, much more so than a military type jet engine. It has to prove itself to a much wider audience whose cargo are essentially invaluable and constantly in flight.

But the core engineering demands and difficulties remains the same outside of the need to impress an audience. It is not unreasonable to see a decade passed to see a new military type turbofan engine from a manufacturer whose products are currently in use.

Conceptually speaking, a jet engine is an internal combustion engine. There is a planned explosion of an air-fuel mixture. There is a containment chamber for that planned explosion. Then there are mechanisms to translate the force into mechanical motions. The difference here is that with a typical piston type engine, peak temperature is periodic while with a jet engine, peak temperature is constant, creating all sorts of technical issues for metallurgy and assorted mechanical engineering. For an aircraft manufacturer, it is foolish to begin a new project without knowing where a new engine comes from, if the new project need a new engine.

 

[Sine Nomine]

Working Of a Jet Engine

 

[BoQ77]

this incredible engines would power some new designs of narrow body regional airliners from Airbus, Boeing, Bombardier, Embraer, and Mitsubishi.
Don't know COMAC is interested in this or not. If they aren't they must develop their own engine to complete this.

And it takes 30 years to develop this GTF, but much shorter than that to be copied.

 

[milen]

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