"Bob Chilcoat" wrote in message ...

My interest is the word "unporting". It doesn't sound right. I'm an
engineer (biomedical), but not an aeronautical engineer. You aerospace
engineers out there, is this the right term? Gann was not mechanical, and I
was wondering if he got the term wrong. If not, can someone explain how the
term is (or was, back then) used in aeronautical engineering? What is the
"port" it refers to? I'm curious.

I'm stumped. The only references to "unporting" that I know of are
conditions in a fuel or oil system when the plane's attitude causes
the port or pickup to be exposed to air. Never heard of an airframe
reference like that. Looking over the description, it sound more
like he was describing "flutter" of a control surface.

John Galban=====N4BQ (PA28-180)