Originally Posted by
tdracer
You guys are going to make my head swell - if I was still racing I'd need to get a new helmet
Righto! Thanks
... which in turn reduced surge margin. The problem mainly affected higher time engines - or more specifically higher time compressors as the blade clearances gradually increased.
Means it wasn't a toothing problem from the start but developed later. I was wondering why such a long time end of 80s until 2005 to finally fix, and deploy over even more years on such a serious issue. Meanwhile they swapped engines with newer or overhauled ones?
My referring to MTU compressor, I found that was PW6000 for the A318, where the original design couldn't "deliver" and the MTU compressor was tried. Looks like P&W had compressor issues on more than one engine.