Back in 2004 I corresponded with Erwin Salzinger about his twin
pronged TE probe (as part of a TE/Static dual probe) for a Discus
2cT. He recommended fitting it in the horizontal orientation so that
the wake did not interfere with the fin pitot close below and he told
me that Loek Boerman's had tested it in the wind tunnel and found
excellent tolerances to yaw and pitch. I think it is just one of
those serendipitous findings - but it definitely makes for the best TE
system that I have had.

John Galloway