RetiredF4;
Many thanks for your post. Machinbird, many thanks as well - as I say, I'm open to "PIO" explanations. I'll read the work at the link you've provided RF4, and am also searching / examining the papers extant and downloadable on the subject*. I'm not an engineer but flew the A330 1999 'til retirement, (as I believe you know) so all writing is of course from that p.o.v.
*Many papers require membership or attendance at the institutions publishing the papers. In my view, the advancement of knowledge and available peer review of SMEs who may not qualify under such narrow restrictions limits knowledge in exchange for the $20 bucks or so one has to pay for each paper. My views on patents are similar...