Originally Posted by Tu.114
Also, why not turn the pitot tube around? Then, Ptot will no longer be Pstat+Pdyn but Pstat-Pdyn - the much smaller values are likely harder to handle but at least there is no longer an opening facing forward and susceptible to icing.
This is done on gliders/sailplanes and produces a variometer output, ie indicates the total energy. But no use for airspeed.