Originally Posted by
ivor toolbox
The majority of aoa sensors I have twiddled have been dual channel, with the outputs split, 1 channel from one side goes to fdr, 1channel from each side to respective side systems, and the remaining channel is used for error detection . So there you have the odd number for computer voting system
I just sit up front, and don’t design things, but I see a two glaring problems with that “solution”.
If the vane breaks in the AOA with the error detection channel you now have two wrongs outvoting one right. And the FDR will not tell the investigators the reason for the crash, because it only has the information from the unaffected AOA.
You need three independent AOAs, and all three should be connected to the FDR.