Hi,
In the meantime what planes need is an Apollo 13 type of a solution.
But ..
A shortcoming I see in the "shielding" solution is that if you get it slightly wrong, you interfere with airflow around the pitot tube and thus interfere with its normal function. (A fix worse than the problem makes the engineer a sad fella ... as he has to do it again and now gets funny looks due to the budget overrun ... )
Note also, from the same document:
So .. this system worked for Apollo 13 but can't for Airbus ?
If I understand well .. the "Apollo 13" pitot type .. is NOT working (not in the measures loop) when shielded .. so it's not interference at all as the shielded pitot tube is neutralized.... IMHO