This is a big deal! Agree.
Cosmic rays hitting the cells in microprocessor causing bits to flip? 🤯 really? Comparing the outputs from both FCS to decide which one is right? Using a third controller? That is a big project. Need a whole new system validation. #Boeing737Max time for a new blog post 🤔
— Shaker Cherukuri (@ProcessISInc) August 3, 2019
However what is the new problem discovered?
“Erroneous streams of data”?? 😱
Fix by “detecting” that? And ignore stabilizer commands???? 😮
— Shaker Cherukuri (@ProcessISInc) July 27, 2019
So looks like the software only fix was deemed to be ludicrous as I suspected.
The erroneous streams of data are now deem to be due to cosmic rays bombarding the microprocessor cells?
This was replicated in a lab? How? Using cosmic rays?
Was the problem tuned on and off?
The fix will now be a third control module that evaluates the two Flight control systems outputs and decide what makes sense? During erroneous streams of data caused by cosmic rays bombardment on the microprocessor cells?
How exactly is all this going to be validated?
To be continued…