PPRuNe Forums - View Single Post - Airbus crash/training flight
View Single Post
Old 20th September 2010 | 07:55
  #1300 (permalink)  
PBL
20 Anniversary
 
Joined: Sep 2000
Posts: 965
Likes: 110
From: Bielefeld, Germany
atakacs,

Originally Posted by atakacs
... is there some "über"computer checking in real time that all sensor readings are within reasonable value respective to each other, and provide a clear ECAM message if not ?
No, there isn't. The general opinion of such things is that it wouldn't do much good, and maybe quite a lot of harm.

First, think what would happen if it failed.

Then, how it can fail. You might think of building in redundancy, but in fact one Byzantine fault can take out arbitrary levels of redundancy, as shown in one shuttle attempted flight (scrubbed during launch) when the entire 4-processor FCC partitioned itself inside seconds into 3-1, then 2-1-1, then 1-1-1-1 (info, and the observation of consequences for redundant architectures, courtesy of Kevin Driscoll).

PBL

PBL
PBL is offline  
Reply