"Marc Ramsey" wrote in message
. com...

I suspect that surface ports on the top and bottom of the nose will also
only work at zero slip/skid angle. Marc

Why would that be?

If both top and bottom ports are on the center line they should be equally
influenced by slip/skid induced crossflow. You'd just be measuring the
pressure difference between the ports not the absolute pressure.

BTW, the guys at Black Forrest with pitch strings report they give advanced
warning of lift so zooms can start a few seconds sooner. An electronic AOA
indicator should do the same. Seems an AOA indicator is both a safety
device and a performance boon.

Bill Daniels