Turbine failure.

[WhyByFlier]

Is it correct that jet engines are not required to contain a turbine failure? The casing is apparently only required to contain a compressor failure. The difference being that turbines weigh a great deal more, are solid not hollow and have a higher RPM therefore making it impossible fom a practical point of view to contain them should they fail. Despite some of the detail I'm attaching to ths question it's not something I know! Is this correct? If so then in fact the RR casing did its job on the QF32 failure case.

[FlyingStone]

The difference being that turbines weigh a great deal more, are solid not hollow and have a higher RPM therefore making it impossible fom a practical point of view to contain them should they fail.

How does a turbine have higher RPM than compressor in an average turbofan engine?

[safelife]

And which blades are solid, and which are hollow?

[NSEU]

Blade off testing - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Blade_off_testing) mentions the requirement for both compressor and turbine containment

Rolls-Royce Trent - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Rolls-Royce_Trent) mentions hollow blades

[lomapaseo]

WhyByFlier

You could always do a search in this forum for some prior nswers and better understanding. I think you will find many answers in a post I made a couple of weeks ago.

If you still have questions remaining after reading that than post them as a follow up in this thread.

As always in this forum the greater challenge to the reader is to understand the question(s) as posted before wasting a lot of time with answers that bore most folks.

For starters I would suggest that you not make a distinction between compressor and turbine or hollow vs solid

[barit1]

Disc failure (http://www.pprune.org/tech-log/437978-qantas-a380-uncontained-failure-37.html#post7747008) has been discussed many times on Pprune. Learn to use the search engine - it works very well.

What makes you think a turbine, on the same shaft as a compressor, turns faster than the compressor? :confused:

[WhyByFlier]

God knows what I thought - I think I was thinking about free turbines or Multi spool engines. I'm a pilot not an engineer! I'll check those links when I have a chance. Thanks again.

[barit1]

There's an equal mix, probably, of pilots, engineers, and bi-partisans on Pprune - welcome to the mob.

The one thing that pervades the forum, though, is a total disregard for political correctness - so it helps to have a thick skin. We use each other as punching bags, and every encounter makes you a bit smarter.

Again, welcome aboard! :ok: