Old 29th Nov 2018, 11:54
  #435 (permalink)  
Join Date: Sep 2011
Location: Västerås
Age: 39
Posts: 50
Originally Posted by Zeffy View Post
NTSB Docket
I saw something interesting in the FDR factual report: the vibration values for Eng 1 are clearly higher than for 2 long before it goes boom. They go above (I presume unitless scale) the value of 1.0 on the graphs, when 2 is about 0.5. Can the engines warn themselves about high vibrations or is it up to the crew to look at the gauges? I know the manufacturers have very advanced algorithms to detect wear/maintenance needs and so on, but how clever is the onboard software?

Edit: I looked at the wrong graph. Apparently there is no large difference in magnitude between the engines... rather looks like Eng 1 vibration goes way down before it disintegrates. Very hard to tell with the scaling being that extreme for Eng 1. Looks like either the vibration went down to 0, or the rendering of the graph is not very good.
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