"tango4" wrote in message ...
TE is opposite to Ptot, in other words TE sucks, but nowhere near equal in
magnitude.

Ian

Not So
Properly functioning TE probe is equal in magnitude to pitot and
opposite in sign.
In fact you could connect airspeed static to probe and airspeed
"pitot" to airfarme static and get the same reading as conventional
hookup. This is actually a fairly useful test tool.
UH